Childhood Asthma
Conditions
Keywords
Acceptance and Commitment Therapy, Childhood asthma, Randomized controlled trial, Training parents
Brief summary
The purpose of this study is to examine whether a parental training program using group-based Acceptance and Commitment Therapy for childhood asthma care, is effective in reducing the children's unplanned health care services utilization and asthmatic symptoms.
Detailed description
One-tenth of children in worldwide are diagnosed with asthma and it is the leading cause for unplanned health care services utilization. Parents, as the primary caregivers, experience different level of psychological distress in taking care of their children with asthma. Some of them responded with avoidance-based coping, which results in poor asthma symptom management and monitoring. Acceptance and Commitment Therapy (ACT) is a contextual focused, behavioral therapy aiming at improving psychological flexibility, so that a person can be more opened up to engaging in value-driven behavior modification, thus attaining an optimal disease control. The benefits of ACT have been demonstrated on both parents and their children with chronic health conditions such as developmental disabilities, acquired brain injuries, chronic pain, cancer and mental disorders. To date, no ACT intervention has been conducted on examining its effects on training parents in managing their children with asthmatic conditions. This is the first study aims to examine the effects of a parental training program using group-based Acceptance and Commitment Therapy (ACT) in reducing the unplanned health care services utilization and asthmatic symptoms, among children with asthma. Parents of children diagnosed with asthma will either receive one session of pediatric asthma educational talk as usual practice in the study hospital, or in addition, four sessions of group-based ACT integrated with asthma education. If the group-based ACT is effective in reducing children's asthmatic symptoms and overall unplanned asthma-related health services utilization, it could lead to substantial health benefits in children with asthma and on parents with a reduction in psychological distress. In addition to cutting medical expenses, it could also contribute to the community health through the reduction in mortality and morbidity due to asthmatic attacks. Furthermore, information collected from this proposed study will open up an opportunity for exploring the potential of ACT-based intervention in managing other childhood chronic diseases.
Interventions
Four sessions of group-based ACT integrated with asthma education. Each session will compose of pediatric asthma education based on guidelines of Global Strategy for Asthma Management and Prevention Revised 2011, plus group-based Acceptance and Commitment Therapy (ACT). The goal of ACT is to enhance the psychological flexibility of the parents, enabling them to (1) become aware of their thoughts and feelings regarding their child's asthma and its management, (2) accept and adapt flexibly to challenging situations, and (3) take actions to achieve valued goals in childhood asthma management.
One session of educational talk about pediatric asthma care, as the usual care. To ensure the equivalency of the assigned sessions between groups, after attending the talk in the first week, the parents in the Control group will receive three telephone calls, starting from the second week on a weekly basis. This arrangement can also minimize the interference of the usual care naturalistically available in the study setting.
Sponsors
Study design
Eligibility
Inclusion criteria
for parents: * Between 18 and 65 years old * Fathers or mothers in each family who are primarily responsible for the daily care of their child with asthma * Living together with the index child * Able to communicate in Cantonese * Hong Kong residents who plan to stay in Hong Kong for at least 6 months * Accessible by telephone and by mail Inclusion Criteria for children: * 3 to 12 years old with a physician's diagnosis of asthma
Exclusion criteria
for parents: * Enrolled in another asthma research intervention study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Child's Total Number of Emergency Department Visits Due to Asthma Attacks Over the 6 Months Post Intervention | 6 months after the completion of intervention | Parental report of the total number of emergency department visits due to asthma attacks of a child in either a / public hospital(s) of the Hong Kong Hospital Authority and/or a private hospital(s) over 6 months post intervention |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Children's Total Number of Private Practitioner's Clinic Visits Due to Asthma Attacks Over the Past 6 Months | At 6 months after the intervention | The total number of private practitioner's clinic visits due to asthma attacks of children over the past 6 months by parental reports in self-administered questionnaires |
| Children's Total Number of Hospital Admissions Due to Asthma Attacks Over the Past 6 Months | At 6 months after the intervention | The total number of hospital admissions due to asthma attacks of children in either the public hospitals under the Hong Kong Hospital Authority and/or the private hospitals over the past 6 months by parental reports in self-administered questionnaires |
| Children's Number of Days of Hospital Stay Due to Asthma Attacks Over the Past 6 Months | At 6 months after the intervention | The total number of days of inpatient hospital stay due to asthma attacks of children in either the public hospitals under the Hong Kong Hospital Authority and/or the private hospitals over the past 6 months by parental reports in self-administered questionnaires |
| Children's Asthma Symptoms During Daytime Per Week Over the Past 4 Weeks | At 6 months after the intervention | The days per week that the child presented with asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) during the daytime over the past 4 weeks, assessed by parental reports in self-administered questionnaires |
| Children's Asthma Symptoms During Nighttime Per Week Over the Past 4 Weeks | At 6 months after the intervention | The nights per week that the child was awakened due to asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) during the nighttime over the past 4 weeks, assessed by parental reports in self-administered questionnaires |
| Children's Days of Activities Affected by Asthma Symptoms Per Week Over the Past 4 Weeks | At 6 months after the intervention | The days per week that the child has to slow down or discontinue his/her activities due to asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) over the past 4 weeks, assessed by parental reports in self-administered questionnaires. |
| Children's Total Number of General Outpatient Clinic Visits Due to Asthma Attacks Over the Past 6 Months | At 6 months after the intervention | The total number of general outpatient clinic visits due to asthma attacks of children over the past 6 months by parental reports in self-administered questionnaires |
| Parents' Psychological Flexibility | At 6 months after the intervention | The Acceptance and Action Questionnaire-II was used to assess the psychological flexibility of the parents. The parents rated 7 statements on a 7-point Likert scale ranging from 1 (never true) to 7 (always true), for example: My painful experiences and memories make it difficult for me to live a life that I would value. The possible range of the total score is 7-49 (minimum value = 7; maximum value = 49). A higher score means a worse outcome, that is the parent is more psychologically inflexible. The Acceptance and Action Questionnaire-II possessed good internal consistencies (mean Cronbach's alpha (α) = .84, range α = .86 to .88) and test-retest reliabilities over a 3-month interval (test-retest reliability coefficient (r) = .81) and 12-month interval (r = .79), respectively. |
| Parents' Psychological Adjustment to Their Child's Asthma | At 6 months after the intervention | The Parent Experience of Child Illness scale was used to capture the psychological adjustment of parents in caring for a child with asthma. The Parent Experience of Child Illness scale contains 25 statements with 3 subscales for assessing the illness-specific psychological distress experienced by parents who have a chronically ill child, including Guilt and Worry, Unresolved Sorrow and Anger, and Long-term Uncertainty, together with 1 subscale on perceived Emotional Resources. The possible range of each of the subscale score is 0-4 (minimum value = 0; maximum value = 4). Higher scores in Guilt and Worry, Unresolved Sorrow and Anger, and Long-term Uncertainty mean worse outcomes. A higher score in Emotional Resources means a better outcome. The Parent Experience of Child Illness scale had adequate internal consistencies (α in each subscale = .72 to .89) and test-retest reliabilities over a 2-week interval (r in each subscale = .83 to .86) |
| Parents' Psychological Symptoms | At 6 months after the intervention | The Depression Anxiety Stress Scale 21 was used to evaluate the psychological symptoms of parents. This instrument contains 21 statements with 3 subscales assessing the symptoms of depression, anxiety and stress of parents, respectively. The parents rated the degree to which each statement applied to them in the past week on a 4-point Likert scale from 0 (does not apply to me at all) to 3 (applies to me very much, or most of the time). The subscale scores for depression, anxiety and stress subscale would be multiplied by two. The possible range for each of the subscale score is 0-42 (minimum value = 0, maximum value = 42). Higher scores mean worse outcomes. The cut-off scores indicating at least a mild level of psychological symptoms of an individual are 9 for depression; 7 for anxiety and 14 for stress, respectively. The Cronbach's alpha for the depression, anxiety, and stress subscales in DASS-21 were 0.82, 0.88 and 0.90, respectively. |
| Parents' Knowledge in Childhood Asthma Management | At 6 months after the intervention | The Asthma Knowledge Questionnaire was used to assess the knowledge level among parents in pediatric asthma management. This instrument composes of 25 true and false statements to measure parental asthma knowledge, including symptoms, triggers, treatment and prevention (Cronbach's alpha = 0.69). The possible range of total score is 0-25 (minimum value = 0; maximum value = 25). A higher score means a better outcome, that is the parent has better asthma knowledge. |
| Parents' Asthma Management Self-efficacy | At 6 months after the intervention | The Parental Asthma Management Self-Efficacy Scale was used to assess the self-efficacy of parents in childhood asthma care. The instrument consists of 13 questions with two subscales in assessing the self-efficacy of parents in preventing and in managing children's asthma attacks. The parents rated the strength of their beliefs in a variety of situations related to childhood asthma management on a 5-point rating scale from 1 (not at sure) to 5 (completely sure). The possible range of each of the subscale score is 1-5 (minimum value = 1, maximum value = 5). A higher score means a better outcome, that is the parent has better self-efficacy. This instrument had satisfactory internal consistency (α of each subscale = .77 to .82) and strong construct validity with the self-efficacy of children in managing asthma (r = 0.36). |
| Parents' Quality of Life | At 6 months after the intervention | The Pediatric Asthma Caregiver's Quality of Life was used to assess the quality of life of the parents in caring for a child with asthma. This instrument is a 13-question, 7-point Likert scale measuring parental psychosocial well-being with 2 subscales, emotional function and activity limitation. The possible range of each of the subscale score is 1-7 (minimum value = 1, maximum value = 7). Higher scores in the subscales mean better outcomes, that is the parent has a better quality of life. This instrument had stable reliabilities within the intervals of four weeks (intraclass correlation coefficient (ICC) = 0.80 to 0.85). |
| Children's Reliever Use Due to Asthma Symptoms Per Week Over the Past 4 Weeks | At 6 months after the intervention | The days per week that the child requires to use an inhaled bronchodilator to relieve asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) over the past 4 weeks, assessed by parental reports in self-administered questionnaires |
Countries
Hong Kong
Participant flow
Recruitment details
This study enrolled parents of children aged 3-12 years who had been diagnosed with asthma from 2 pediatric respiratory outpatient clinics, the Ambulatory Care Centre and a nurse-led asthma clinic, in the Department of Pediatrics and Adolescent Medicine of a public hospital under the Hospital Authority in Hong Kong.
Pre-assignment details
No significant events in this study occurred after participant enrollment. All the enrolled participants who provided written consent to participate in the study were included in the study.
Participants by arm
| Arm | Count |
|---|---|
| Control Group Parents of children with asthma will receive one session of asthma educational talk as the usual care, plus three weekly sessions of telephone calls to assess the child's asthma symptoms
Control: One session of educational talk about pediatric asthma care, as the usual care.
To ensure the equivalency of the assigned sessions between groups, after attending the talk in the first week, the parents in the Control group will receive three telephone calls, starting from the second week on a weekly basis. This arrangement can also minimize the interference of the usual care naturalistically available in the study setting. | 84 |
| ACT Group Parents of children with asthma will receive four sessions of group-based ACT intervention integrated with asthma education (its content will be the same as that of the Control Group).
ACT: Four sessions of group-based ACT integrated with asthma education. Each session will compose of pediatric asthma education based on guidelines of Global Strategy for Asthma Management and Prevention Revised 2011, plus group-based Acceptance and Commitment Therapy (ACT). The goal of ACT is to enhance the psychological flexibility of the parents, enabling them to (1) become aware of their thoughts and feelings regarding their child's asthma and its management, (2) accept and adapt flexibly to challenging situations, and (3) take actions to achieve valued goals in childhood asthma management. | 84 |
| Total | 168 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 |
|---|---|---|---|
| Overall Study | A participant has moved to another place | 0 | 1 |
| Overall Study | Lost to Follow-up | 1 | 4 |
Baseline characteristics
| Characteristic | Control Group | ACT Group | Total |
|---|---|---|---|
| Age, Continuous | 39.07 years STANDARD_DEVIATION 6.19 | 37.74 years STANDARD_DEVIATION 5.55 | 38.40 years STANDARD_DEVIATION 5.9 |
| Child's age | 6.95 years STANDARD_DEVIATION 2.46 | 6.67 years STANDARD_DEVIATION 2.55 | 6.81 years STANDARD_DEVIATION 2.5 |
| Child's age of diagnosis as asthma | 3.61 years STANDARD_DEVIATION 1.88 | 3.31 years STANDARD_DEVIATION 1.7 | 3.46 years STANDARD_DEVIATION 1.79 |
| Child's concurrently diagnosed with allergic rhinitis No | 54 Participants | 55 Participants | 109 Participants |
| Child's concurrently diagnosed with allergic rhinitis Yes | 30 Participants | 29 Participants | 59 Participants |
| Child's concurrently diagnosed with eczema No | 76 Participants | 74 Participants | 150 Participants |
| Child's concurrently diagnosed with eczema Yes | 8 Participants | 10 Participants | 18 Participants |
| Child's current use of inhaled corticosteroid as prophylaxis, by types Beclometasone dipropionate | 46 Participants | 35 Participants | 81 Participants |
| Child's current use of inhaled corticosteroid as prophylaxis, by types Fluticasone propionate | 4 Participants | 1 Participants | 5 Participants |
| Child's current use of inhaled corticosteroid as prophylaxis, by types Fluticasone propionate and Salmeterol | 1 Participants | 1 Participants | 2 Participants |
| Child's current use of inhaled corticosteroid as prophylaxis, by types None | 33 Participants | 47 Participants | 80 Participants |
| Child's current use of oral Montelukast as prophylaxis No | 71 Participants | 73 Participants | 144 Participants |
| Child's current use of oral Montelukast as prophylaxis Yes | 13 Participants | 11 Participants | 24 Participants |
| Child's gender Female | 32 Participants | 33 Participants | 65 Participants |
| Child's gender Male | 52 Participants | 51 Participants | 103 Participants |
| Child's total number of emergency care visit(s) due to asthma exacerbations in the past 6 months 0 times | 54 Participants | 49 Participants | 103 Participants |
| Child's total number of emergency care visit(s) due to asthma exacerbations in the past 6 months 1 to 2 times | 26 Participants | 29 Participants | 55 Participants |
| Child's total number of emergency care visit(s) due to asthma exacerbations in the past 6 months 3 to 4 times | 3 Participants | 5 Participants | 8 Participants |
| Child's total number of emergency care visit(s) due to asthma exacerbations in the past 6 months 5 times or above | 1 Participants | 1 Participants | 2 Participants |
| Child's total number of GOPC visits due to asthma exacerbations in the past 6 months 0 times | 74 Participants | 69 Participants | 143 Participants |
| Child's total number of GOPC visits due to asthma exacerbations in the past 6 months 1 to 2 times | 5 Participants | 10 Participants | 15 Participants |
| Child's total number of GOPC visits due to asthma exacerbations in the past 6 months 3 to 4 times | 4 Participants | 3 Participants | 7 Participants |
| Child's total number of GOPC visits due to asthma exacerbations in the past 6 months 5 times or above | 1 Participants | 2 Participants | 3 Participants |
| Child's total number of hospital admission(s) due to asthma exacerbation(s) in the past 6 months 0 times | 67 Participants | 60 Participants | 127 Participants |
| Child's total number of hospital admission(s) due to asthma exacerbation(s) in the past 6 months 1 to 2 times | 16 Participants | 22 Participants | 38 Participants |
| Child's total number of hospital admission(s) due to asthma exacerbation(s) in the past 6 months 3 to 4 times | 1 Participants | 2 Participants | 3 Participants |
| Child's total number of PP clinic visits due to asthma exacerbations in the past 6 months 0 times | 46 Participants | 47 Participants | 93 Participants |
| Child's total number of PP clinic visits due to asthma exacerbations in the past 6 months 1 to 2 times | 26 Participants | 22 Participants | 48 Participants |
| Child's total number of PP clinic visits due to asthma exacerbations in the past 6 months 3 to 4 times | 9 Participants | 7 Participants | 16 Participants |
| Child's total number of PP clinic visits due to asthma exacerbations in the past 6 months 5 times or above | 3 Participants | 8 Participants | 11 Participants |
| Child's use of alternative therapy in the past 6 months, by types Herbal soup | 9 Participants | 8 Participants | 17 Participants |
| Child's use of alternative therapy in the past 6 months, by types Natural moxibustion | 2 Participants | 2 Participants | 4 Participants |
| Child's use of alternative therapy in the past 6 months, by types None | 73 Participants | 74 Participants | 147 Participants |
| Child use 1 or more course of oral prednisolone use in the previous year due to asthma exacerbations No | 40 Participants | 34 Participants | 74 Participants |
| Child use 1 or more course of oral prednisolone use in the previous year due to asthma exacerbations Yes | 44 Participants | 50 Participants | 94 Participants |
| Educational attainment Primary education or below | 5 Participants | 4 Participants | 9 Participants |
| Educational attainment Secondary education | 65 Participants | 58 Participants | 123 Participants |
| Educational attainment Tertiary education or above | 14 Participants | 22 Participants | 36 Participants |
| Employment status Full-time employed | 34 Participants | 29 Participants | 63 Participants |
| Employment status Home-makers or unemployed | 44 Participants | 49 Participants | 93 Participants |
| Employment status Part-time employed | 6 Participants | 6 Participants | 12 Participants |
| History of asthma diagnosis At least one parent has a history of asthma | 24 Participants | 22 Participants | 46 Participants |
| History of asthma diagnosis Neither parents has a history of asthma | 48 Participants | 51 Participants | 99 Participants |
| History of asthma diagnosis Other family members has a history of asthma | 12 Participants | 11 Participants | 23 Participants |
| Marital status Married | 72 Participants | 73 Participants | 145 Participants |
| Marital status Single/ separated/ divorced/ widowed | 12 Participants | 11 Participants | 23 Participants |
| Monthly household income (Hong Kong Dollars) < $ 10,000 | 15 Participants | 10 Participants | 25 Participants |
| Monthly household income (Hong Kong Dollars) $10,000 to $25,000 | 27 Participants | 18 Participants | 45 Participants |
| Monthly household income (Hong Kong Dollars) $25,001 to $50,000 | 37 Participants | 51 Participants | 88 Participants |
| Monthly household income (Hong Kong Dollars) >$50,000 | 5 Participants | 5 Participants | 10 Participants |
| Region of Enrollment Hong Kong | 84 participants | 84 participants | 168 participants |
| Sex: Female, Male Female | 72 Participants | 76 Participants | 148 Participants |
| Sex: Female, Male Male | 12 Participants | 8 Participants | 20 Participants |
| Smoking status At least one parent is a current smoker | 31 Participants | 33 Participants | 64 Participants |
| Smoking status Both parents are non-smokers | 53 Participants | 51 Participants | 104 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 0 / 84 | 0 / 84 |
| other Total, other adverse events | 0 / 84 | 0 / 84 |
| serious Total, serious adverse events | 0 / 84 | 0 / 84 |
Outcome results
Child's Total Number of Emergency Department Visits Due to Asthma Attacks Over the 6 Months Post Intervention
Parental report of the total number of emergency department visits due to asthma attacks of a child in either a / public hospital(s) of the Hong Kong Hospital Authority and/or a private hospital(s) over 6 months post intervention
Time frame: 6 months after the completion of intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Child's Total Number of Emergency Department Visits Due to Asthma Attacks Over the 6 Months Post Intervention | 0.38 Number of visits | Standard Error 0.11 |
| ACT Group | Child's Total Number of Emergency Department Visits Due to Asthma Attacks Over the 6 Months Post Intervention | 0.08 Number of visits | Standard Error 0.04 |
Children's Asthma Symptoms During Daytime Per Week Over the Past 4 Weeks
The days per week that the child presented with asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) during the daytime over the past 4 weeks, assessed by parental reports in self-administered questionnaires
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Asthma Symptoms During Daytime Per Week Over the Past 4 Weeks | 2.30 Number of days | Standard Error 0.22 |
| ACT Group | Children's Asthma Symptoms During Daytime Per Week Over the Past 4 Weeks | 0.58 Number of days | Standard Error 0.15 |
Children's Asthma Symptoms During Nighttime Per Week Over the Past 4 Weeks
The nights per week that the child was awakened due to asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) during the nighttime over the past 4 weeks, assessed by parental reports in self-administered questionnaires
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Asthma Symptoms During Nighttime Per Week Over the Past 4 Weeks | 1.89 Number of nights | Standard Error 0.23 |
| ACT Group | Children's Asthma Symptoms During Nighttime Per Week Over the Past 4 Weeks | 0.55 Number of nights | Standard Error 0.13 |
Children's Days of Activities Affected by Asthma Symptoms Per Week Over the Past 4 Weeks
The days per week that the child has to slow down or discontinue his/her activities due to asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) over the past 4 weeks, assessed by parental reports in self-administered questionnaires.
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Days of Activities Affected by Asthma Symptoms Per Week Over the Past 4 Weeks | 0.84 Number of days | Standard Error 0.16 |
| ACT Group | Children's Days of Activities Affected by Asthma Symptoms Per Week Over the Past 4 Weeks | 0.17 Number of days | Standard Error 0.07 |
Children's Number of Days of Hospital Stay Due to Asthma Attacks Over the Past 6 Months
The total number of days of inpatient hospital stay due to asthma attacks of children in either the public hospitals under the Hong Kong Hospital Authority and/or the private hospitals over the past 6 months by parental reports in self-administered questionnaires
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Number of Days of Hospital Stay Due to Asthma Attacks Over the Past 6 Months | 3.75 Number of days of hospital stay | Standard Error 0.42 |
| ACT Group | Children's Number of Days of Hospital Stay Due to Asthma Attacks Over the Past 6 Months | 3.67 Number of days of hospital stay | Standard Error 0.72 |
Children's Reliever Use Due to Asthma Symptoms Per Week Over the Past 4 Weeks
The days per week that the child requires to use an inhaled bronchodilator to relieve asthma symptoms (either chronic coughing, wheezing, shortness of breath, or chest tightness) over the past 4 weeks, assessed by parental reports in self-administered questionnaires
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Reliever Use Due to Asthma Symptoms Per Week Over the Past 4 Weeks | 1.62 Number of days | Standard Error 0.22 |
| ACT Group | Children's Reliever Use Due to Asthma Symptoms Per Week Over the Past 4 Weeks | 0.59 Number of days | Standard Error 0.15 |
Children's Total Number of General Outpatient Clinic Visits Due to Asthma Attacks Over the Past 6 Months
The total number of general outpatient clinic visits due to asthma attacks of children over the past 6 months by parental reports in self-administered questionnaires
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Total Number of General Outpatient Clinic Visits Due to Asthma Attacks Over the Past 6 Months | 0.18 Number of visits | Standard Error 0.06 |
| ACT Group | Children's Total Number of General Outpatient Clinic Visits Due to Asthma Attacks Over the Past 6 Months | 0.05 Number of visits | Standard Error 0.02 |
Children's Total Number of Hospital Admissions Due to Asthma Attacks Over the Past 6 Months
The total number of hospital admissions due to asthma attacks of children in either the public hospitals under the Hong Kong Hospital Authority and/or the private hospitals over the past 6 months by parental reports in self-administered questionnaires
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Total Number of Hospital Admissions Due to Asthma Attacks Over the Past 6 Months | 0.06 Number of hospital admissions | Standard Error 0.03 |
| ACT Group | Children's Total Number of Hospital Admissions Due to Asthma Attacks Over the Past 6 Months | 0.04 Number of hospital admissions | Standard Error 0.02 |
Children's Total Number of Private Practitioner's Clinic Visits Due to Asthma Attacks Over the Past 6 Months
The total number of private practitioner's clinic visits due to asthma attacks of children over the past 6 months by parental reports in self-administered questionnaires
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Children's Total Number of Private Practitioner's Clinic Visits Due to Asthma Attacks Over the Past 6 Months | 0.85 Number of visits | Standard Error 0.14 |
| ACT Group | Children's Total Number of Private Practitioner's Clinic Visits Due to Asthma Attacks Over the Past 6 Months | 0.40 Number of visits | Standard Error 0.09 |
Parents' Asthma Management Self-efficacy
The Parental Asthma Management Self-Efficacy Scale was used to assess the self-efficacy of parents in childhood asthma care. The instrument consists of 13 questions with two subscales in assessing the self-efficacy of parents in preventing and in managing children's asthma attacks. The parents rated the strength of their beliefs in a variety of situations related to childhood asthma management on a 5-point rating scale from 1 (not at sure) to 5 (completely sure). The possible range of each of the subscale score is 1-5 (minimum value = 1, maximum value = 5). A higher score means a better outcome, that is the parent has better self-efficacy. This instrument had satisfactory internal consistency (α of each subscale = .77 to .82) and strong construct validity with the self-efficacy of children in managing asthma (r = 0.36).
Time frame: At 6 months after the intervention
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| Control Group | Parents' Asthma Management Self-efficacy | Attack prevention | 3.89 score on a subscale | Standard Error 0.07 |
| Control Group | Parents' Asthma Management Self-efficacy | Attack management | 3.59 score on a subscale | Standard Error 0.08 |
| ACT Group | Parents' Asthma Management Self-efficacy | Attack prevention | 4.10 score on a subscale | Standard Error 0.07 |
| ACT Group | Parents' Asthma Management Self-efficacy | Attack management | 3.81 score on a subscale | Standard Error 0.05 |
Parents' Knowledge in Childhood Asthma Management
The Asthma Knowledge Questionnaire was used to assess the knowledge level among parents in pediatric asthma management. This instrument composes of 25 true and false statements to measure parental asthma knowledge, including symptoms, triggers, treatment and prevention (Cronbach's alpha = 0.69). The possible range of total score is 0-25 (minimum value = 0; maximum value = 25). A higher score means a better outcome, that is the parent has better asthma knowledge.
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Parents' Knowledge in Childhood Asthma Management | 18.81 score on a scale | Standard Error 0.29 |
| ACT Group | Parents' Knowledge in Childhood Asthma Management | 19.50 score on a scale | Standard Error 0.27 |
Parents' Psychological Adjustment to Their Child's Asthma
The Parent Experience of Child Illness scale was used to capture the psychological adjustment of parents in caring for a child with asthma. The Parent Experience of Child Illness scale contains 25 statements with 3 subscales for assessing the illness-specific psychological distress experienced by parents who have a chronically ill child, including Guilt and Worry, Unresolved Sorrow and Anger, and Long-term Uncertainty, together with 1 subscale on perceived Emotional Resources. The possible range of each of the subscale score is 0-4 (minimum value = 0; maximum value = 4). Higher scores in Guilt and Worry, Unresolved Sorrow and Anger, and Long-term Uncertainty mean worse outcomes. A higher score in Emotional Resources means a better outcome. The Parent Experience of Child Illness scale had adequate internal consistencies (α in each subscale = .72 to .89) and test-retest reliabilities over a 2-week interval (r in each subscale = .83 to .86)
Time frame: At 6 months after the intervention
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| Control Group | Parents' Psychological Adjustment to Their Child's Asthma | Guilt and worry | 1.46 score on a subscale | Standard Error 0.07 |
| Control Group | Parents' Psychological Adjustment to Their Child's Asthma | Unresolved sorrow and anger | 1.16 score on a subscale | Standard Error 0.07 |
| Control Group | Parents' Psychological Adjustment to Their Child's Asthma | Long-term uncertainty | 1.13 score on a subscale | Standard Error 0.08 |
| Control Group | Parents' Psychological Adjustment to Their Child's Asthma | Perceived emotional resources | 2.38 score on a subscale | Standard Error 0.1 |
| ACT Group | Parents' Psychological Adjustment to Their Child's Asthma | Perceived emotional resources | 2.64 score on a subscale | Standard Error 0.08 |
| ACT Group | Parents' Psychological Adjustment to Their Child's Asthma | Guilt and worry | 1.19 score on a subscale | Standard Error 0.06 |
| ACT Group | Parents' Psychological Adjustment to Their Child's Asthma | Long-term uncertainty | 0.98 score on a subscale | Standard Error 0.06 |
| ACT Group | Parents' Psychological Adjustment to Their Child's Asthma | Unresolved sorrow and anger | 0.95 score on a subscale | Standard Error 0.05 |
Parents' Psychological Flexibility
The Acceptance and Action Questionnaire-II was used to assess the psychological flexibility of the parents. The parents rated 7 statements on a 7-point Likert scale ranging from 1 (never true) to 7 (always true), for example: My painful experiences and memories make it difficult for me to live a life that I would value. The possible range of the total score is 7-49 (minimum value = 7; maximum value = 49). A higher score means a worse outcome, that is the parent is more psychologically inflexible. The Acceptance and Action Questionnaire-II possessed good internal consistencies (mean Cronbach's alpha (α) = .84, range α = .86 to .88) and test-retest reliabilities over a 3-month interval (test-retest reliability coefficient (r) = .81) and 12-month interval (r = .79), respectively.
Time frame: At 6 months after the intervention
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Control Group | Parents' Psychological Flexibility | 20.40 score on a scale | Standard Error 0.89 |
| ACT Group | Parents' Psychological Flexibility | 14.67 score on a scale | Standard Error 0.72 |
Parents' Psychological Symptoms
The Depression Anxiety Stress Scale 21 was used to evaluate the psychological symptoms of parents. This instrument contains 21 statements with 3 subscales assessing the symptoms of depression, anxiety and stress of parents, respectively. The parents rated the degree to which each statement applied to them in the past week on a 4-point Likert scale from 0 (does not apply to me at all) to 3 (applies to me very much, or most of the time). The subscale scores for depression, anxiety and stress subscale would be multiplied by two. The possible range for each of the subscale score is 0-42 (minimum value = 0, maximum value = 42). Higher scores mean worse outcomes. The cut-off scores indicating at least a mild level of psychological symptoms of an individual are 9 for depression; 7 for anxiety and 14 for stress, respectively. The Cronbach's alpha for the depression, anxiety, and stress subscales in DASS-21 were 0.82, 0.88 and 0.90, respectively.
Time frame: At 6 months after the intervention
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| Control Group | Parents' Psychological Symptoms | Depressive symptoms | 4.12 score on a subscale | Standard Error 0.58 |
| Control Group | Parents' Psychological Symptoms | Anxiety symptoms | 6.10 score on a subscale | Standard Error 0.65 |
| Control Group | Parents' Psychological Symptoms | Stress symptoms | 9.85 score on a subscale | Standard Error 0.9 |
| ACT Group | Parents' Psychological Symptoms | Depressive symptoms | 2.75 score on a subscale | Standard Error 0.4 |
| ACT Group | Parents' Psychological Symptoms | Anxiety symptoms | 3.80 score on a subscale | Standard Error 0.42 |
| ACT Group | Parents' Psychological Symptoms | Stress symptoms | 7.41 score on a subscale | Standard Error 0.63 |
Parents' Quality of Life
The Pediatric Asthma Caregiver's Quality of Life was used to assess the quality of life of the parents in caring for a child with asthma. This instrument is a 13-question, 7-point Likert scale measuring parental psychosocial well-being with 2 subscales, emotional function and activity limitation. The possible range of each of the subscale score is 1-7 (minimum value = 1, maximum value = 7). Higher scores in the subscales mean better outcomes, that is the parent has a better quality of life. This instrument had stable reliabilities within the intervals of four weeks (intraclass correlation coefficient (ICC) = 0.80 to 0.85).
Time frame: At 6 months after the intervention
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| Control Group | Parents' Quality of Life | Emotional function | 5.36 score on a subscale | Standard Error 0.12 |
| Control Group | Parents' Quality of Life | Activity limitation | 5.23 score on a subscale | Standard Error 0.13 |
| ACT Group | Parents' Quality of Life | Emotional function | 5.69 score on a subscale | Standard Error 0.1 |
| ACT Group | Parents' Quality of Life | Activity limitation | 5.65 score on a subscale | Standard Error 0.11 |