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Initial Testing of a Mobile App Pain Coping Intervention for Outpatient Oncology Settings (PainPac)

Initial Testing of a Mobile App Pain Coping Intervention for Outpatient Oncology Settings

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05686122
Enrollment
62
Registered
2023-01-17
Start date
2023-09-28
Completion date
2024-10-30
Last updated
2025-09-04

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

Conditions

Colorectal Cancer

Keywords

cancer, pain, coping, mHealth, symptom management

Brief summary

PainPac is innovative in its potential to integrate with healthcare systems through electronic medical records (EMRs). PainPac leverages technology to increase patient access to interventions and uses real-time assessment to improve care. PainPac is positioned to rapidly provide improved care through combining biological data (e.g., EMRs, patient collected) with behavioral data to dramatically improve outcomes. PainPac could track beneficial outcomes related to clinical pain scores (e.g., patients with scores 4-8 benefit) and intervention implementation could be based on this; a more advanced possibility is use of geospatial tracking to predict space/time where pain is likely to impact functioning and push an intervention strategy - behavioral or pharmacological. PainPac is designed for future transmission of data to EMRs to inform providers of patient status. This work will provide data to bypass traditional efficacy trials and move quickly to a large effectiveness trial.

Detailed description

The investigators will use a pilot RCT to examine PainPac feasibility, patient burden, engagement, acceptability, and initial pain-related outcomes, compared to a therapist led videoconference delivered behavioral pain intervention (PCST-Video) in colorectal cancer patients with pain. Investigators will use quantitative and qualitative data to optimize PainPac. Participants will complete assessments at pre-treatment (A1), post-treatment (A2; 4 weeks post-A1), and 1 month follow-up (A3; 1 month post-A2) (months 5-22). The pain management strategies are relevant and efficacious across cancer types. Due to the pilot nature of this work, investigators will enroll an opportunity sample of colorectal cancer patients. PainPac is a patient-focused intervention developed using cognitive-behavioral theory and empirically supported strategies to enhance patients' ability to manage their pain. PainPac is a mobile app available to participants on a smartphone or tablet. PainPac uses Social Cognitive Theory to promote behaviors to improve pain, self-efficacy for pain management, and pain-related quality of life indices. It also uses real-time data to personalize the intervention and messaging to participants. PainPac contains 4 modules, each including a skill that has shown efficacy for reducing pain in patients with cancer. Patients are prompted to complete one module each week for 4 weeks. The app also has interactive components to improve coping skills engagement. Participants randomized to PCST-Video will receive 4 behavioral cancer pain intervention sessions delivered by videoconferencing by a pain therapist in the medical center to the patient in their natural environment (e.g., home). Sessions will be scheduled weekly for 45-60 min and mimic in person sessions. PCST-Video session content is matches the PainPac skills modules described above. PCST-Video participants will complete assessments at the same intervals as PainPac participants. Aim 1: Test whether PainPac is feasible (primary aim), low burden, engaging, and acceptable. Aim 2: Examine the impact of PainPac on pain severity, pain interference, pain self-efficacy, and quality of life. Aim 3: Gather quantitative and qualitative post-treatment data on patients' preferences, barriers, and facilitators regarding PainPac to update and optimize PainPac for a future large randomized clinical effectiveness trial.

Interventions

BEHAVIORALPainPac

Patient-focused behavioral pain intervention delivered via mobile application.

Sponsors

National Institutes of Health (NIH)
CollaboratorNIH
Duke University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Stage I-IV Colorectal Cancer diagnosis * 18 years of age or older

Exclusion criteria

* Cognitive Impairment * Brain Metastases * Severe psychiatric condition (e.g., psychosis) that would contraindicate safe participation * Participation in behavioral pain management in the past 6 months.

Design outcomes

Primary

MeasureTime frameDescription
Feasibility as Measured by Study AccrualBaselineReaching target accrual (N=60) within 15 months.
Feasibility as Measured by Attrition (Number of Participants Who Did Not Complete the 1-month Visit)1-month follow-up (9-12 weeks post-baseline)
Feasibility as Measured by the Number of Participants Who Completed Study Baseline AssessmentsBaselineProtocol adherence indicated by calculating the degree to which participants are willing/able to complete the study baseline assessment.
Feasibility as Measured by the Number of Participants Who Completed Post-study Sessions AssessmentsPost-treatment assessment (5-8 weeks post-baseline)Protocol adherence indicated by calculating the degree to which participants are willing/able to complete the post-study sessions assessment.
Feasibility as Measured by the Number of Participants Who Completed Study 1-month Follow up Assessments Completed1-month follow-up (9-12 weeks post-baseline)Protocol adherence indicated by calculating the degree to which participants are willing/able to complete the 1-month follow up assessment.
Feasibility of PainPac, as Measured by the Total # of Participants Who Completed All Four Sessions5-8 weeks post-baselineIncludes protocol adherence indicated by calculating the degree to which participants are willing/able to complete the 4 PainPac skills modules or 4 PCST-Video sessions.

Secondary

MeasureTime frameDescription
Burden as Measured by # of Sessions Completed3-8 weeks post-baseline
Burden as Measured by # of Days From the Baseline Assessment to Completion of Session 1 (Days to Start Intervention)0-2 weeks post-baseline
Burden as Measured by # of Days to Complete All Modules/Sessions (Days to Complete Intervention)3-8 weeks from Session 1
Acceptability as Measured by the Client Satisfaction Questionnaire.Post-treatment assessment (5-8 weeks post-baseline)10-item Client Satisfaction Questionnaire (CSQ). This questionnaire contains 10 items rated from 1=low acceptability to 4=high acceptability; scores are created by utilizing the Likert Scale to average Client Satisfaction Questionnaire answers resulting in a score range from 1-4. The participant will complete this acceptability questionnaire as part of the post-session follow up assessment. A higher score indicates a higher satisfaction, with 32 indicating 100% satisfaction and 8 indicating 0% satisfaction.
Change in Quality of LifeBaseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)This measure assesses healthy days in the last month.
Change in PROMIS - Emotional Distress (Depression) Short FormBaseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)Post-intervention and 1-month follow up, 8 items on a 5 point scale from 1=never, 2=rarely, 3=sometimes, 4=often, 5=always. Patients are asked 8-items regarding in the past 7 days I felt... to assess their emotional distress levels. The total score ranges from 37.1-81.1, with higher scores indicate higher distress.
Engagement in Study5-8 weeks post-baselineEngagement is defined as the number of times/week participants log into PainPac and practice the skills. Engagement will be assessed based on app data and patient self-report. Patient Engagement will be assessed by electronic app data (e.g., PainPac weekly log-ins) and patient self-report defined as the number of times per week they practice the coping skills. \>3 times/week will serve as the benchmark; if participants log into PainPac and/or practice the coping skills \<3 times/week, PainPac will not be considered engaging.
Acceptability as Measured by Atkinson's Tool of mHealth Innovations.Post-treatment assessment (5-8 weeks post-baseline)Atkinson's tool will also be used to assess perceived attributes of mHealth innovations. Tool has 30 items about mHealth, participant indicates their level of agreement or disagreement on a 6-point Likert scale: l=strongly disagree, 2=disagree, 3=somewhat disagree, 4=somewhat agree. 5=agree, and 6=strongly agree. Scores range from 1-6 with higher scores indicating a more positive assessment of PainPac.
Computer Self-EfficacyPost-treatment assessment (5-8 weeks post-baseline)Post-Intervention, 10 items on a 10 point scale from 0=not at all confident to 10=completely confident. Total score ranges from 0-100. Patients are asked 10 items regarding their confidence in ability to use technology (computer and smartphone app). Higher scores indicate greater computer self-efficacy.
Change in Pain Severity as Assessed With the Brief Pain Inventory (BPI)Baseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)Pain will be assessed with the Brief Pain Inventory (BPI). Patients will rate their worst, least, average, and now pain from 0=no pain to 10=worst pain imaginable. An average of the responses to these items is used to create a single pain severity score.
Pain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference ScaleBaseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)Pain interference will be assessed with the Brief Pain Inventory (BPI) - Pain Interference Scale. Patients will rate how much pain interfered with a variety of activities and mood states over the last 7 days from 0=does not interfere to 10=completely interferes. An average of the responses to these items is used to create a single pain severity score ranging from 0-10.
Change in Pain Self-Efficacy for Pain ManagementBaseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)5-item self-efficacy subscale of the Chronic Pain Self-Efficacy Scale. Items ask about patients' certainty about pain control, pain during activities, and reducing pain without extra medication using a 10=very uncertain to 100=very certain scale and averaged. Total score ranges from 10-100. Higher scores correspond to higher self-efficacy for pain management.

Countries

United States

Participant flow

Pre-assignment details

Two additional participants were consented but were not randomized and did not complete the baseline assessments.

Participants by arm

ArmCount
PainPac
4 behavioral cancer pain intervention sessions delivered by mobile application. Patient-focused intervention. PainPac uses Social Cognitive Theory to promote behaviors to improve pain, self-efficacy for pain management, and pain-related quality of life indices. It also uses real-time data to personalize the intervention and messaging to participants. The app also has interactive components to improve coping skills engagement. PainPac: Patient-focused behavioral pain intervention delivered via mobile application.
30
PCST-Video
4 behavioral cancer pain intervention sessions delivered by videoconferencing by a pain therapist in the medical center to the patient in their natural environment (e.g., home). Sessions will be scheduled weekly for 45-60 min and mimic in person sessions. PCST-Video session content is matches the PainPac skills modules. PCST-Video participants will complete assessments at the same intervals as PainPac participants.
30
Total60

Baseline characteristics

CharacteristicPainPacPCST-VideoTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
9 Participants7 Participants16 Participants
Age, Categorical
Between 18 and 65 years
21 Participants23 Participants44 Participants
Age, Continuous58.10 years
STANDARD_DEVIATION 12.41
58.20 years
STANDARD_DEVIATION 10.46
58.15 years
STANDARD_DEVIATION 11.38
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
29 Participants28 Participants57 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Black or African American
6 Participants10 Participants16 Participants
Race (NIH/OMB)
More than one race
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
23 Participants18 Participants41 Participants
Sex: Female, Male
Female
18 Participants20 Participants38 Participants
Sex: Female, Male
Male
12 Participants10 Participants22 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 300 / 30
other
Total, other adverse events
0 / 300 / 30
serious
Total, serious adverse events
0 / 300 / 30

Outcome results

Primary

Feasibility as Measured by Attrition (Number of Participants Who Did Not Complete the 1-month Visit)

Time frame: 1-month follow-up (9-12 weeks post-baseline)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Total Consented ParticipantsFeasibility as Measured by Attrition (Number of Participants Who Did Not Complete the 1-month Visit)2 Participants
PCST-VideoFeasibility as Measured by Attrition (Number of Participants Who Did Not Complete the 1-month Visit)1 Participants
Primary

Feasibility as Measured by Study Accrual

Reaching target accrual (N=60) within 15 months.

Time frame: Baseline

Population: Out of 82 patients who screened eligible for this study, 62 patients consented to participate. 60 of those patients completed the baseline assessment and were randomized.

ArmMeasureValue (NUMBER)
Total Consented ParticipantsFeasibility as Measured by Study Accrual62 participants
Primary

Feasibility as Measured by the Number of Participants Who Completed Post-study Sessions Assessments

Protocol adherence indicated by calculating the degree to which participants are willing/able to complete the post-study sessions assessment.

Time frame: Post-treatment assessment (5-8 weeks post-baseline)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Total Consented ParticipantsFeasibility as Measured by the Number of Participants Who Completed Post-study Sessions Assessments28 Participants
PCST-VideoFeasibility as Measured by the Number of Participants Who Completed Post-study Sessions Assessments27 Participants
Primary

Feasibility as Measured by the Number of Participants Who Completed Study 1-month Follow up Assessments Completed

Protocol adherence indicated by calculating the degree to which participants are willing/able to complete the 1-month follow up assessment.

Time frame: 1-month follow-up (9-12 weeks post-baseline)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Total Consented ParticipantsFeasibility as Measured by the Number of Participants Who Completed Study 1-month Follow up Assessments Completed28 Participants
PCST-VideoFeasibility as Measured by the Number of Participants Who Completed Study 1-month Follow up Assessments Completed29 Participants
Primary

Feasibility as Measured by the Number of Participants Who Completed Study Baseline Assessments

Protocol adherence indicated by calculating the degree to which participants are willing/able to complete the study baseline assessment.

Time frame: Baseline

Population: The number analyzed for this outcome includes the two participants who consented but did not complete the baseline assessments and were not randomized. Since the baseline assessment occurs before randomization, the study groups are combined for this measure.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Total Consented ParticipantsFeasibility as Measured by the Number of Participants Who Completed Study Baseline Assessments60 Participants
Primary

Feasibility of PainPac, as Measured by the Total # of Participants Who Completed All Four Sessions

Includes protocol adherence indicated by calculating the degree to which participants are willing/able to complete the 4 PainPac skills modules or 4 PCST-Video sessions.

Time frame: 5-8 weeks post-baseline

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Total Consented ParticipantsFeasibility of PainPac, as Measured by the Total # of Participants Who Completed All Four Sessions27 Participants
PCST-VideoFeasibility of PainPac, as Measured by the Total # of Participants Who Completed All Four Sessions24 Participants
Secondary

Acceptability as Measured by Atkinson's Tool of mHealth Innovations.

Atkinson's tool will also be used to assess perceived attributes of mHealth innovations. Tool has 30 items about mHealth, participant indicates their level of agreement or disagreement on a 6-point Likert scale: l=strongly disagree, 2=disagree, 3=somewhat disagree, 4=somewhat agree. 5=agree, and 6=strongly agree. Scores range from 1-6 with higher scores indicating a more positive assessment of PainPac.

Time frame: Post-treatment assessment (5-8 weeks post-baseline)

ArmMeasureValue (MEAN)Dispersion
Total Consented ParticipantsAcceptability as Measured by Atkinson's Tool of mHealth Innovations.4.82 units on a scaleStandard Deviation 0.52
Secondary

Acceptability as Measured by the Client Satisfaction Questionnaire.

10-item Client Satisfaction Questionnaire (CSQ). This questionnaire contains 10 items rated from 1=low acceptability to 4=high acceptability; scores are created by utilizing the Likert Scale to average Client Satisfaction Questionnaire answers resulting in a score range from 1-4. The participant will complete this acceptability questionnaire as part of the post-session follow up assessment. A higher score indicates a higher satisfaction, with 32 indicating 100% satisfaction and 8 indicating 0% satisfaction.

Time frame: Post-treatment assessment (5-8 weeks post-baseline)

ArmMeasureValue (MEAN)Dispersion
Total Consented ParticipantsAcceptability as Measured by the Client Satisfaction Questionnaire.28.11 units on a scaleStandard Deviation 3.74
PCST-VideoAcceptability as Measured by the Client Satisfaction Questionnaire.28.93 units on a scaleStandard Deviation 3.57
Secondary

Burden as Measured by # of Days From the Baseline Assessment to Completion of Session 1 (Days to Start Intervention)

Time frame: 0-2 weeks post-baseline

ArmMeasureValue (MEAN)Dispersion
Total Consented ParticipantsBurden as Measured by # of Days From the Baseline Assessment to Completion of Session 1 (Days to Start Intervention)1.32 daysStandard Deviation 2.28
PCST-VideoBurden as Measured by # of Days From the Baseline Assessment to Completion of Session 1 (Days to Start Intervention)12.25 daysStandard Deviation 10.92
Secondary

Burden as Measured by # of Days to Complete All Modules/Sessions (Days to Complete Intervention)

Time frame: 3-8 weeks from Session 1

ArmMeasureValue (MEAN)Dispersion
Total Consented ParticipantsBurden as Measured by # of Days to Complete All Modules/Sessions (Days to Complete Intervention)23.57 daysStandard Deviation 5.31
PCST-VideoBurden as Measured by # of Days to Complete All Modules/Sessions (Days to Complete Intervention)27.63 daysStandard Deviation 6.7
Secondary

Burden as Measured by # of Sessions Completed

Time frame: 3-8 weeks post-baseline

ArmMeasureValue (MEAN)Dispersion
Total Consented ParticipantsBurden as Measured by # of Sessions Completed3.77 sessionsStandard Deviation 0.82
PCST-VideoBurden as Measured by # of Sessions Completed3.37 sessionsStandard Deviation 1.33
Secondary

Change in Pain Self-Efficacy for Pain Management

5-item self-efficacy subscale of the Chronic Pain Self-Efficacy Scale. Items ask about patients' certainty about pain control, pain during activities, and reducing pain without extra medication using a 10=very uncertain to 100=very certain scale and averaged. Total score ranges from 10-100. Higher scores correspond to higher self-efficacy for pain management.

Time frame: Baseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)

ArmMeasureGroupValue (MEAN)Dispersion
Total Consented ParticipantsChange in Pain Self-Efficacy for Pain ManagementBaseline (A1)53.72 score on a scaleStandard Deviation 23.69
Total Consented ParticipantsChange in Pain Self-Efficacy for Pain ManagementPost-Assessment (A2)63.79 score on a scaleStandard Deviation 16.72
Total Consented ParticipantsChange in Pain Self-Efficacy for Pain Management1-month follow-up (A3)67.00 score on a scaleStandard Deviation 20.4
PCST-VideoChange in Pain Self-Efficacy for Pain ManagementBaseline (A1)59.70 score on a scaleStandard Deviation 23.08
PCST-VideoChange in Pain Self-Efficacy for Pain ManagementPost-Assessment (A2)67.92 score on a scaleStandard Deviation 21.32
PCST-VideoChange in Pain Self-Efficacy for Pain Management1-month follow-up (A3)65.52 score on a scaleStandard Deviation 22.61
Secondary

Change in Pain Severity as Assessed With the Brief Pain Inventory (BPI)

Pain will be assessed with the Brief Pain Inventory (BPI). Patients will rate their worst, least, average, and now pain from 0=no pain to 10=worst pain imaginable. An average of the responses to these items is used to create a single pain severity score.

Time frame: Baseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)

ArmMeasureGroupValue (MEAN)Dispersion
Total Consented ParticipantsChange in Pain Severity as Assessed With the Brief Pain Inventory (BPI)Baseline (A1)3.73 score on a scaleStandard Deviation 1.91
Total Consented ParticipantsChange in Pain Severity as Assessed With the Brief Pain Inventory (BPI)Post-Assessment (A2)3.88 score on a scaleStandard Deviation 1.88
Total Consented ParticipantsChange in Pain Severity as Assessed With the Brief Pain Inventory (BPI)1 month follow-up (A3)3.51 score on a scaleStandard Deviation 2.49
PCST-VideoChange in Pain Severity as Assessed With the Brief Pain Inventory (BPI)Baseline (A1)4.55 score on a scaleStandard Deviation 2.32
PCST-VideoChange in Pain Severity as Assessed With the Brief Pain Inventory (BPI)Post-Assessment (A2)3.96 score on a scaleStandard Deviation 2.19
PCST-VideoChange in Pain Severity as Assessed With the Brief Pain Inventory (BPI)1 month follow-up (A3)3.37 score on a scaleStandard Deviation 2.1
Secondary

Change in PROMIS - Emotional Distress (Depression) Short Form

Post-intervention and 1-month follow up, 8 items on a 5 point scale from 1=never, 2=rarely, 3=sometimes, 4=often, 5=always. Patients are asked 8-items regarding in the past 7 days I felt... to assess their emotional distress levels. The total score ranges from 37.1-81.1, with higher scores indicate higher distress.

Time frame: Baseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)

ArmMeasureGroupValue (MEAN)Dispersion
Total Consented ParticipantsChange in PROMIS - Emotional Distress (Depression) Short FormBaseline (A1)51.19 score on a scaleStandard Deviation 7.13
Total Consented ParticipantsChange in PROMIS - Emotional Distress (Depression) Short FormPost-Assessment (A2)50.52 score on a scaleStandard Deviation 7.11
Total Consented ParticipantsChange in PROMIS - Emotional Distress (Depression) Short Form1-month follow-up (A3)49.20 score on a scaleStandard Deviation 8.34
PCST-VideoChange in PROMIS - Emotional Distress (Depression) Short FormBaseline (A1)50.16 score on a scaleStandard Deviation 8.65
PCST-VideoChange in PROMIS - Emotional Distress (Depression) Short FormPost-Assessment (A2)47.43 score on a scaleStandard Deviation 8.98
PCST-VideoChange in PROMIS - Emotional Distress (Depression) Short Form1-month follow-up (A3)48.24 score on a scaleStandard Deviation 10.23
Secondary

Change in Quality of Life

This measure assesses healthy days in the last month.

Time frame: Baseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)

ArmMeasureGroupValue (MEAN)Dispersion
Total Consented ParticipantsChange in Quality of LifePost-assessment (A2)7.39 healthy days in the past monthStandard Deviation 7.49
Total Consented ParticipantsChange in Quality of LifeBaseline (A1)6.66 healthy days in the past monthStandard Deviation 7.18
Total Consented ParticipantsChange in Quality of Life1-month follow-up (A3)9.50 healthy days in the past monthStandard Deviation 9.28
PCST-VideoChange in Quality of LifeBaseline (A1)9.60 healthy days in the past monthStandard Deviation 9.5
PCST-VideoChange in Quality of LifePost-assessment (A2)8.63 healthy days in the past monthStandard Deviation 8.85
PCST-VideoChange in Quality of Life1-month follow-up (A3)14.93 healthy days in the past monthStandard Deviation 15.27
Secondary

Computer Self-Efficacy

Post-Intervention, 10 items on a 10 point scale from 0=not at all confident to 10=completely confident. Total score ranges from 0-100. Patients are asked 10 items regarding their confidence in ability to use technology (computer and smartphone app). Higher scores indicate greater computer self-efficacy.

Time frame: Post-treatment assessment (5-8 weeks post-baseline)

Population: Computer Self-Efficacy was a PainPac-specific measure of self-efficacy, and thus only PainPac participants completed this measure.

ArmMeasureValue (MEAN)Dispersion
Total Consented ParticipantsComputer Self-Efficacy83.71 score on a scaleStandard Deviation 19.82
Secondary

Engagement in Study

Engagement is defined as the number of times/week participants log into PainPac and practice the skills. Engagement will be assessed based on app data and patient self-report. Patient Engagement will be assessed by electronic app data (e.g., PainPac weekly log-ins) and patient self-report defined as the number of times per week they practice the coping skills. \>3 times/week will serve as the benchmark; if participants log into PainPac and/or practice the coping skills \<3 times/week, PainPac will not be considered engaging.

Time frame: 5-8 weeks post-baseline

Population: Patients in the PCST-Video arm did not log into a mobile app so were not analyzed for the number of weekly log ins.

ArmMeasureGroupValue (MEAN)Dispersion
Total Consented ParticipantsEngagement in StudyWeekly Log-Ins9.22 Times per weekStandard Deviation 4.2
Total Consented ParticipantsEngagement in StudyWeekly Skills Practice5.21 Times per weekStandard Deviation 1.91
PCST-VideoEngagement in StudyWeekly Skills Practice5.52 Times per weekStandard Deviation 1.63
Secondary

Pain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference Scale

Pain interference will be assessed with the Brief Pain Inventory (BPI) - Pain Interference Scale. Patients will rate how much pain interfered with a variety of activities and mood states over the last 7 days from 0=does not interfere to 10=completely interferes. An average of the responses to these items is used to create a single pain severity score ranging from 0-10.

Time frame: Baseline, Post-Assessment (5-8 weeks post-baseline), 1 month follow-up (9-12 weeks post-baseline)

ArmMeasureGroupValue (MEAN)Dispersion
Total Consented ParticipantsPain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference ScaleBaseline (A1)3.34 score on a scaleStandard Deviation 2.07
Total Consented ParticipantsPain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference ScalePost-Assessment (A2)3.05 score on a scaleStandard Deviation 1.69
Total Consented ParticipantsPain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference Scale1-month follow-up (A3)2.78 score on a scaleStandard Deviation 2.12
PCST-VideoPain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference ScaleBaseline (A1)4.08 score on a scaleStandard Deviation 2.55
PCST-VideoPain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference ScalePost-Assessment (A2)3.21 score on a scaleStandard Deviation 2.19
PCST-VideoPain Interference as Assessed With the Brief Pain Inventory (BPI) - Pain Interference Scale1-month follow-up (A3)2.77 score on a scaleStandard Deviation 2.07

Source: ClinicalTrials.gov · Data processed: Apr 9, 2026