Skip to content

Improved Outcome in Allogeneic Hematopoietic Stem Cell Transplant (HSCT) Patients by Reducing Caregiver Distress

Improved Behavioral Outcome in Allogeneic Hematopoietic Stem Cell Transplant Patients by Reducing Caregiver Distress: Behavioral and Physiological Evidence

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02037568
Enrollment
159
Registered
2014-01-16
Start date
2014-01-31
Completion date
2017-09-30
Last updated
2017-12-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hematopoietic/Lymphoid Cancer

Keywords

depression, stress, caregiving, anxiety, psychoeducation intervention, psycho-oncology, allogeneic hematopoietic stem cell transplant

Brief summary

PURPOSE: As this is a randomized controlled trial, all subjects receiving stress management psychoeducation will be expected to obtain a new set of coping skills that will allow them to better deal with the stressors of caregiving for an allogeneic HSCT patient. It is expected that improving caregiver status will improve patient quality of life.

Detailed description

Specific Aims * Create a Community Advisory Board (CAB) consisting of allogeneic HSCT patients, caregivers, blood cancer oncologists, support staff and study investigators to provide input. * Assess patient Quality of Life (QOL) following an allogeneic HSCT using the Functional Assessment of Cancer Therapy-Bone Marrow Transplant (FACT-BMT) as the primary patient outcome. Patients whose caregivers receive fone PsychoEducation and Relaxation (fPER) will have improved QOL compared to caregivers assigned to treatment as usual (TAU). * Test the impact of fPER on a caregiver composite distress score (encompasses depression, anxiety, and stress) as the primary caregiver outcome. Caregivers receiving fPER will have reduced distress. * Assess biomarkers of allostatic load in patients prior to transplant and caregivers during the transplant process using novel biomarkers (hair cortisol and telomeres). fPER will be associated with reduced allostatic load in caregivers compared to TAU. Patient hair cortisol collected only before transplant will relate to QOL at intake. OUTLINE: Caregivers are randomized to 1 of 2 groups. All patients and caregivers, regardless of randomization, are informed of what to expect during the transplant process and how to locate available support resources within each program. Patients and caregivers are given information that is specific to their involvement in the transplantation process and recovery phase. * Group I (treatment as usual \[TAU\]): Subjects randomized to TAU will be encouraged to participate in available support programs at their respective centers which are very similar between sites and include individual counseling as well as support groups. Due to the impact of our prior intervention on caregiver distress, we will provide each caregiver randomized to TAU a workbook prepared for someone to use without inclusion of one-on-one sessions with a therapist. * Group II (PsychoEducation and Relaxation \[fPER\]): Caregivers will participate in the fPER intervention prior to transplant. The fPER consists of 10 sessions to include 4 weekly 60-minute sessions followed by 4 biweekly 60-minute sessions and two additional sessions between day 100 and 6 months post-transplant. Each fPER session will be devoted to a separate topic with the goal of assisting the caregiver in the development and application of stress-management coping skills including learning problem-solving skills, identifying cognitive distortions, application of relaxation techniques, use of the emWave2, coping skills training, effective use of social support, and establishing appropriate goals. All caregivers in fPER will be provided a Caregiver Workbook that includes information about the session topics and homework assignments. fPER sessions will be delivered either at the clinic during patient visits or via video chat. fPER will also include incorporation of Smartphone technology to make the interventionist available by video chat. Caregivers and patients undergo psychosocial assessments prior to randomization, and at 6 weeks, 3 months and 6 months after transplant (anchored to the day of transplant as day 0). At each phase, patients and caregivers will complete the same battery of questionnaires that includes the Center for Epidemiological Studies-Depression scale (CES-D), the perceived stress scale (PSS), and the State-Trait Anxiety Inventory (STAI). Additionally the patient will complete the FACT-BMT each time while the caregiver completes the Caregiver Reaction Assessment (CRA) and Carer Support Needs Assessment Tool (CSNAT). The patient and the caregiver will additionally complete a demographic questionnaire that includes questions regarding age, diagnosis, income, and other standard questions regarding nutrition, health behaviors, and health services utilization. At study completion, an exit questionnaire will address each subject's evaluation of the study and the group in which they were assigned. Blood and hair samples from caregivers will be collected every three months: baseline (patient and caregiver), 3 (caregiver) and 6 (patient and caregiver) months post-transplant.

Interventions

BEHAVIORALfPER

Briefly in order, the sessions will include: 1) Overview and introduction to stress management, 2) Stress and the mind-body connection, 3) How our thoughts can lead to stress, 4) Coping with stress, 5) Strategies for maintaining energy and stamina, 6) Coping with uncertainty and fear of unknown, 7) Managing changing relationships/communicating needs, and 8) Getting the support they need, modeled after a successful intervention for patient groups. Manualization is crucial for successful wider implementation. Sessions 9 and 10 will provide booster sessions in which the interventionist will assess current challenges for the caregiver, provide review, and emphasize further coping skills training that might assist the caregiver in managing current stressors such as coping with the new normal.

Sponsors

Patient-Centered Outcomes Research Institute
CollaboratorOTHER
University of Colorado, Denver
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
Yes

Inclusion criteria

* DISEASE CHARACTERISTICS (Meets all of the following criteria): * Patient undergoing allogeneic hematopoietic stem cell transplant (HSCT) * Caregiver: the person in the patient's life who is primarily responsible for care decisions, emotionally invested in the patient's care, provides instrumental care such as transportation, and available if randomized to the fPER group to participate in the majority of intervention sessions * PATIENT CHARACTERISTICS: * Able to read and speak English * Has telephone access * CAREGIVER CHARACTERISTICS: * Able to read and speak English * Willingness to use a Smartphone * No serious medical condition likely to influence cortisol assessment in their hair * Alcohol consumption limited to \< 2 drinks/day * At least 18 years of age

Exclusion criteria

* PRIOR CONCURRENT THERAPY: * No history of a psychiatric illness unrelated to the HSCT within the past 18 months * No steroid medications (caregiver)

Design outcomes

Primary

MeasureTime frameDescription
Functional Assessment of Cancer Treatment - Blood/Marrow TransplantBaseline (prior to transplant), 6 weeks, 3 months and 6 months after transplantFunctional Assessment of Cancer Treatment - Blood/Marrow Transplant (FACT-BMT) is used to assess the life quality of patients. The scale includes 5 subscales. The scores of each scale are summed to compute a total score. The scale range is 0-148. Higher score indicates better life quality.
Caregiver Distress - Principal Component AnalysisBaseline (prior to transplant), 6 weeks, 3 months and 6 months after transplantCaregiver Distress is a composite score is created from a principal component analysis (PCA). This PCA extracted the first principal component from summary variables of Center for Epidemiological Studies Depression Scale, Spielberger State and Trait Anxiety Inventory, and Perceived Stress Scale. The composite distress score has a mean of 0.0 and SD of 1.0, scale ranges from -2.06 - 3.73. Higher score indicates greater distress.

Secondary

MeasureTime frameDescription
Spielberger State-Trait Anxiety InventoryBaseline (prior to transplant), 6 weeks, 3 months and 6 months after transplantThe Spielberger State and Trait Anxiety Inventory (STAI) is a validated self-reporting instrument used to assess anxiety in adults. The inventory consists of state anxiety, which evaluates how the subject feels currently (transient anxiety). The scale consists of 20 questions, and a higher score indicates greater anxiety. Total score ranges from 20 (no anxiety) to 80 (maximum anxiety).
Change in Adrenal Activity Over TimeBaseline (prior to transplant), 3 months (caregiver only), and 6 months after transplant.Cortisol measured in hair will be used as a retrospective measure of activation of the hypothalamic pituitary adrenal axis. Because hair cortisol were not normally distributed, the data were log transformed.
Perceived Stress ScaleBaseline (prior to transplant), 6 weeks, 3 months and 6 months after transplantThe Perceived Stress Scale (PSS) measures the overall level of stress. This instrument contains 14 items accessing overall appraisals of stress in the past month. The total score range is 0-56. A higher score indicates greater stress.
Change in Caregiver Telomerase Activity Over TimeBaseline (prior to transplant), 3 months and 6 months after transplantTelomerase activity will be assessed as a measure of the ability to reverse cellular aging processes. Because telomerase activity were not normally distributed, the data were log transformed.
Caregiver Reaction AssessmentBaseline (prior to transplant), 6 weeks, 3 months and 6 months after transplantThe Caregiver Reaction Assessment (CRA) is a measure of caregiver burden. This instrument contains 24 items reflecting the total caregiver situation in the past month. The scale includes 5 subscales. The scores of each scale are summed to compute a total score. Minimum score (best value)=5. Maximum score (worst value)=25. Higher values reflect the experience of a higher burden.
Change in Caregiver Telomere Length Over TimeBaseline (prior to transplant), 3 months and 6 months after transplantTelomere length was assessed as a measure of cellular aging in blood samples from participants. Because telomere length were not normally distributed, the data were log transformed.
Center for Epidemiological Studies Depression ScaleBaseline (prior to transplant), 6 weeks, 3 months and 6 months after transplantCenter for Epidemiological Studies Depression Scale (CESD) is a self-report 20-item scale designed to measure current depressive symptoms. Total score range from 0-60, with a score at or above 16 reflecting significant depressive symptomatology.

Countries

United States

Participant flow

Recruitment details

Caregivers and their Allo-HSCT patients were recruited consecutively between 3/2014 and 11/2016 during pre-transplant screening admitted for treatment to two transplant programs in the Denver metro area for participation in this study: a university-based NCI-designated Comprehensive Cancer Center and a community-based cancer center.

Pre-assignment details

159 patient-caregiver dyads were consented (318 participants).

Participants by arm

ArmCount
Caregiver Self-Directed (TAU)
Orientation class; laboratory biomarker analysis; questionnaire administration; survey administration; treatment as usual psychosocial care; caregiver workbook.
83
Caregiver Intervention (PEPRR 2.0)
Orientation class; laboratory biomarker analysis; questionnaire administration; survey administration; Psychoeducation and Relaxation (fPER), which included one-on-one psychoeducation, and stress management intervention. fPER: Briefly in order, the sessions will include: 1) Overview and introduction to stress management, 2) Stress and the mind-body connection, 3) How our thoughts can lead to stress, 4) Coping with stress, 5) Strategies for maintaining energy and stamina, 6) Coping with uncertainty and fear of unknown, 7) Managing changing relationships/communicating needs, and 8) Getting the support they need, modeled after a successful intervention for patient groups. Manualization is crucial for successful wider implementation. Sessions 9 and 10 will provide booster sessions in which the interventionist will assess current challenges for the caregiver, provide review, and emphasize further coping skills training that might assist the caregiver in managing current stressors
76
Total159

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up1613
Overall StudyPatient did not receive transplant01
Overall StudyScreen Failure31
Overall StudyWithdrawal by Subject1724

Baseline characteristics

CharacteristicTotalCaregiver Self-Directed (TAU)Caregiver Intervention (PEPRR 2.0)
Age, Continuous54.1 years
STANDARD_DEVIATION 13.7
54.6 years
STANDARD_DEVIATION 12.8
53.6 years
STANDARD_DEVIATION 14.7
Annual income
< 25,000
50 Participants29 Participants21 Participants
Annual income
25,000-44,999
27 Participants14 Participants13 Participants
Annual income
45,000-64,999
31 Participants13 Participants18 Participants
Annual income
> 65,000
29 Participants13 Participants16 Participants
Annual income
Unknown or Not Reported
22 Participants14 Participants8 Participants
Employment Status (Before Caregiving)
Full-time
65 Participants30 Participants35 Participants
Employment Status (Before Caregiving)
On leave
2 Participants1 Participants1 Participants
Employment Status (Before Caregiving)
Part-time
27 Participants15 Participants12 Participants
Employment Status (Before Caregiving)
Retired
40 Participants20 Participants20 Participants
Employment Status (Before Caregiving)
Unemployed
16 Participants9 Participants7 Participants
Employment Status (Before Caregiving)
Unknown or Not Reported
9 Participants8 Participants1 Participants
Employment Status (During Caregiving)
Full-time
33 Participants15 Participants18 Participants
Employment Status (During Caregiving)
On leave
28 Participants15 Participants13 Participants
Employment Status (During Caregiving)
Part-time
29 Participants15 Participants14 Participants
Employment Status (During Caregiving)
Retired
37 Participants20 Participants17 Participants
Employment Status (During Caregiving)
Unemployed
21 Participants9 Participants12 Participants
Employment Status (During Caregiving)
Unknown or Not Reported
11 Participants9 Participants2 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
14 Participants8 Participants6 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
129 Participants64 Participants65 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
16 Participants11 Participants5 Participants
Patient Age, Continuous53.3 years
STANDARD_DEVIATION 14.8
54.6 years
STANDARD_DEVIATION 14.2
51.9 years
STANDARD_DEVIATION 15.3
Patient Diagnosis
Leukemia
97 Participants53 Participants44 Participants
Patient Diagnosis
Lymphoma
21 Participants11 Participants10 Participants
Patient Diagnosis
MDS/MPS
35 Participants16 Participants19 Participants
Patient Diagnosis
Other (MM, SAA)
6 Participants3 Participants3 Participants
Patient Sex: Female, Male
Female
56 Participants29 Participants27 Participants
Patient Sex: Female, Male
Male
103 Participants54 Participants49 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
2 Participants0 Participants2 Participants
Race (NIH/OMB)
More than one race
6 Participants3 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
20 Participants11 Participants9 Participants
Race (NIH/OMB)
White
130 Participants68 Participants62 Participants
Region of Enrollment
United States
159 participants83 participants76 participants
Relationship to patient
Child
9 Participants6 Participants3 Participants
Relationship to patient
Other
7 Participants0 Participants7 Participants
Relationship to patient
Parent
20 Participants11 Participants9 Participants
Relationship to patient
Sibling
13 Participants5 Participants8 Participants
Relationship to patient
Spouse/Civil Partner
102 Participants54 Participants48 Participants
Relationship to patient
Unknown or Not Reported
8 Participants7 Participants1 Participants
Sex: Female, Male
Female
125 Participants67 Participants58 Participants
Sex: Female, Male
Male
31 Participants14 Participants17 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 830 / 76
other
Total, other adverse events
0 / 830 / 76
serious
Total, serious adverse events
0 / 830 / 76

Outcome results

Primary

Caregiver Distress - Principal Component Analysis

Caregiver Distress is a composite score is created from a principal component analysis (PCA). This PCA extracted the first principal component from summary variables of Center for Epidemiological Studies Depression Scale, Spielberger State and Trait Anxiety Inventory, and Perceived Stress Scale. The composite distress score has a mean of 0.0 and SD of 1.0, scale ranges from -2.06 - 3.73. Higher score indicates greater distress.

Time frame: Baseline (prior to transplant), 6 weeks, 3 months and 6 months after transplant

Population: Caregiver Control group missing responses (n = 7). Caregiver Intervention group: missing responses (n = 3).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Caregiver Distress - Principal Component AnalysisBaseline-0.09 units on a scale
Caregiver Self-Directed (TAU)Caregiver Distress - Principal Component AnalysisMonth 1.50.02 units on a scale
Caregiver Self-Directed (TAU)Caregiver Distress - Principal Component AnalysisMonth 30.05 units on a scale
Caregiver Self-Directed (TAU)Caregiver Distress - Principal Component AnalysisMonth 60.14 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Distress - Principal Component AnalysisMonth 6-0.2 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Distress - Principal Component AnalysisBaseline0.07 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Distress - Principal Component AnalysisMonth 30.0 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Distress - Principal Component AnalysisMonth 1.5-0.06 units on a scale
p-value: 0.007Mixed Models Analysis
Primary

Functional Assessment of Cancer Treatment - Blood/Marrow Transplant

Functional Assessment of Cancer Treatment - Blood/Marrow Transplant (FACT-BMT) is used to assess the life quality of patients. The scale includes 5 subscales. The scores of each scale are summed to compute a total score. The scale range is 0-148. Higher score indicates better life quality.

Time frame: Baseline (prior to transplant), 6 weeks, 3 months and 6 months after transplant

Population: Patient Control group missing responses (n = 14). Caregiver Intervention group: missing responses (n = 6).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantBaseline97.7 units on a scale
Caregiver Self-Directed (TAU)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantMonth 1.595.7 units on a scale
Caregiver Self-Directed (TAU)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantMonth 3101.5 units on a scale
Caregiver Self-Directed (TAU)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantMonth 6100.9 units on a scale
Caregiver Intervention (PEPRR 2.0)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantMonth 6101.8 units on a scale
Caregiver Intervention (PEPRR 2.0)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantBaseline98.1 units on a scale
Caregiver Intervention (PEPRR 2.0)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantMonth 3100.1 units on a scale
Caregiver Intervention (PEPRR 2.0)Functional Assessment of Cancer Treatment - Blood/Marrow TransplantMonth 1.595.8 units on a scale
p-value: 0.96Mixed Models Analysis
Secondary

Caregiver Reaction Assessment

The Caregiver Reaction Assessment (CRA) is a measure of caregiver burden. This instrument contains 24 items reflecting the total caregiver situation in the past month. The scale includes 5 subscales. The scores of each scale are summed to compute a total score. Minimum score (best value)=5. Maximum score (worst value)=25. Higher values reflect the experience of a higher burden.

Time frame: Baseline (prior to transplant), 6 weeks, 3 months and 6 months after transplant

Population: Caregiver Control group missing responses (n = 7). Caregiver Intervention group: missing responses (n = 3).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Caregiver Reaction AssessmentBaseline10.4 units on a scale
Caregiver Self-Directed (TAU)Caregiver Reaction AssessmentMonth 1.510.8 units on a scale
Caregiver Self-Directed (TAU)Caregiver Reaction AssessmentMonth 310.8 units on a scale
Caregiver Self-Directed (TAU)Caregiver Reaction AssessmentMonth 610.5 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Reaction AssessmentMonth 610.5 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Reaction AssessmentBaseline10.3 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Reaction AssessmentMonth 310.9 units on a scale
Caregiver Intervention (PEPRR 2.0)Caregiver Reaction AssessmentMonth 1.510.9 units on a scale
p-value: 0.86Mixed Models Analysis
Secondary

Center for Epidemiological Studies Depression Scale

Center for Epidemiological Studies Depression Scale (CESD) is a self-report 20-item scale designed to measure current depressive symptoms. Total score range from 0-60, with a score at or above 16 reflecting significant depressive symptomatology.

Time frame: Baseline (prior to transplant), 6 weeks, 3 months and 6 months after transplant

Population: Caregiver Control group missing responses (n = 7). Caregiver Intervention group: missing responses (n = 3).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Center for Epidemiological Studies Depression ScaleBaseline20.0 units on a scale
Caregiver Self-Directed (TAU)Center for Epidemiological Studies Depression ScaleMonth 1.519.6 units on a scale
Caregiver Self-Directed (TAU)Center for Epidemiological Studies Depression ScaleMonth 320.0 units on a scale
Caregiver Self-Directed (TAU)Center for Epidemiological Studies Depression ScaleMonth 621.3 units on a scale
Caregiver Intervention (PEPRR 2.0)Center for Epidemiological Studies Depression ScaleMonth 618.0 units on a scale
Caregiver Intervention (PEPRR 2.0)Center for Epidemiological Studies Depression ScaleBaseline20.5 units on a scale
Caregiver Intervention (PEPRR 2.0)Center for Epidemiological Studies Depression ScaleMonth 317.8 units on a scale
Caregiver Intervention (PEPRR 2.0)Center for Epidemiological Studies Depression ScaleMonth 1.518.3 units on a scale
p-value: 0.05Mixed Models Analysis
Secondary

Change in Adrenal Activity Over Time

Cortisol measured in hair will be used as a retrospective measure of activation of the hypothalamic pituitary adrenal axis. Because hair cortisol were not normally distributed, the data were log transformed.

Time frame: Baseline (prior to transplant), 3 months (caregiver only), and 6 months after transplant.

Population: Caregiver Control group missing responses (n = 8). Caregiver Intervention group: missing responses (n = 2).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Change in Adrenal Activity Over TimeBaseline1.93 log (pg/mg)
Caregiver Self-Directed (TAU)Change in Adrenal Activity Over TimeMonth 31.98 log (pg/mg)
Caregiver Self-Directed (TAU)Change in Adrenal Activity Over TimeMonth 62.19 log (pg/mg)
Caregiver Intervention (PEPRR 2.0)Change in Adrenal Activity Over TimeBaseline2.14 log (pg/mg)
Caregiver Intervention (PEPRR 2.0)Change in Adrenal Activity Over TimeMonth 32.18 log (pg/mg)
Caregiver Intervention (PEPRR 2.0)Change in Adrenal Activity Over TimeMonth 62.14 log (pg/mg)
p-value: 0.96Mixed Models Analysis
Secondary

Change in Caregiver Telomerase Activity Over Time

Telomerase activity will be assessed as a measure of the ability to reverse cellular aging processes. Because telomerase activity were not normally distributed, the data were log transformed.

Time frame: Baseline (prior to transplant), 3 months and 6 months after transplant

Population: Caregiver Control group missing responses (n = 8). Caregiver Intervention group: missing responses (n = 2).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Change in Caregiver Telomerase Activity Over TimeBaseline1.7 log (enzyme unit)
Caregiver Self-Directed (TAU)Change in Caregiver Telomerase Activity Over TimeMonth 31.69 log (enzyme unit)
Caregiver Self-Directed (TAU)Change in Caregiver Telomerase Activity Over TimeMonth 61.76 log (enzyme unit)
Caregiver Intervention (PEPRR 2.0)Change in Caregiver Telomerase Activity Over TimeBaseline1.7 log (enzyme unit)
Caregiver Intervention (PEPRR 2.0)Change in Caregiver Telomerase Activity Over TimeMonth 31.73 log (enzyme unit)
Caregiver Intervention (PEPRR 2.0)Change in Caregiver Telomerase Activity Over TimeMonth 61.71 log (enzyme unit)
p-value: 0.79Mixed Models Analysis
Secondary

Change in Caregiver Telomere Length Over Time

Telomere length was assessed as a measure of cellular aging in blood samples from participants. Because telomere length were not normally distributed, the data were log transformed.

Time frame: Baseline (prior to transplant), 3 months and 6 months after transplant

Population: Caregiver Control group missing responses (n = 8). Caregiver Intervention group: missing responses (n = 2).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Change in Caregiver Telomere Length Over TimeBaseline0.03 log (T/S ratio)
Caregiver Self-Directed (TAU)Change in Caregiver Telomere Length Over TimeMonth 30.03 log (T/S ratio)
Caregiver Self-Directed (TAU)Change in Caregiver Telomere Length Over TimeMonth 60.03 log (T/S ratio)
Caregiver Intervention (PEPRR 2.0)Change in Caregiver Telomere Length Over TimeBaseline0.0 log (T/S ratio)
Caregiver Intervention (PEPRR 2.0)Change in Caregiver Telomere Length Over TimeMonth 30.0 log (T/S ratio)
Caregiver Intervention (PEPRR 2.0)Change in Caregiver Telomere Length Over TimeMonth 60.03 log (T/S ratio)
p-value: 0.74Mixed Models Analysis
Secondary

Perceived Stress Scale

The Perceived Stress Scale (PSS) measures the overall level of stress. This instrument contains 14 items accessing overall appraisals of stress in the past month. The total score range is 0-56. A higher score indicates greater stress.

Time frame: Baseline (prior to transplant), 6 weeks, 3 months and 6 months after transplant

Population: Caregiver Control group missing responses (n = 7). Caregiver Intervention group: missing responses (n = 3).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Perceived Stress ScaleBaseline24.2 units on a scale
Caregiver Self-Directed (TAU)Perceived Stress ScaleMonth 1.523.0 units on a scale
Caregiver Self-Directed (TAU)Perceived Stress ScaleMonth 321.3 units on a scale
Caregiver Self-Directed (TAU)Perceived Stress ScaleMonth 621.9 units on a scale
Caregiver Intervention (PEPRR 2.0)Perceived Stress ScaleMonth 620.5 units on a scale
Caregiver Intervention (PEPRR 2.0)Perceived Stress ScaleBaseline25.5 units on a scale
Caregiver Intervention (PEPRR 2.0)Perceived Stress ScaleMonth 322.4 units on a scale
Caregiver Intervention (PEPRR 2.0)Perceived Stress ScaleMonth 1.522.9 units on a scale
p-value: 0.08Mixed Models Analysis
Secondary

Spielberger State-Trait Anxiety Inventory

The Spielberger State and Trait Anxiety Inventory (STAI) is a validated self-reporting instrument used to assess anxiety in adults. The inventory consists of state anxiety, which evaluates how the subject feels currently (transient anxiety). The scale consists of 20 questions, and a higher score indicates greater anxiety. Total score ranges from 20 (no anxiety) to 80 (maximum anxiety).

Time frame: Baseline (prior to transplant), 6 weeks, 3 months and 6 months after transplant

Population: Caregiver Control group missing responses (n = 7). Caregiver Intervention group: missing responses (n = 3).

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Caregiver Self-Directed (TAU)Spielberger State-Trait Anxiety InventoryBaseline39.6 units on a scale
Caregiver Self-Directed (TAU)Spielberger State-Trait Anxiety InventoryMonth 1.538.4 units on a scale
Caregiver Self-Directed (TAU)Spielberger State-Trait Anxiety InventoryMonth 339.2 units on a scale
Caregiver Self-Directed (TAU)Spielberger State-Trait Anxiety InventoryMonth 639.1 units on a scale
Caregiver Intervention (PEPRR 2.0)Spielberger State-Trait Anxiety InventoryMonth 635.7 units on a scale
Caregiver Intervention (PEPRR 2.0)Spielberger State-Trait Anxiety InventoryBaseline41.6 units on a scale
Caregiver Intervention (PEPRR 2.0)Spielberger State-Trait Anxiety InventoryMonth 339.3 units on a scale
Caregiver Intervention (PEPRR 2.0)Spielberger State-Trait Anxiety InventoryMonth 1.539.6 units on a scale
p-value: 0.07Mixed Models Analysis

Source: ClinicalTrials.gov · Data processed: Feb 19, 2026