Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT05304117 |
Other study ID # |
1685879-1 |
Secondary ID |
|
Status |
Completed |
Phase |
N/A
|
First received |
|
Last updated |
|
Start date |
February 4, 2022 |
Est. completion date |
February 1, 2023 |
Study information
Verified date |
December 2023 |
Source |
Western Carolina University |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
This project has three specific aims: (1) culturally tailor the content of the Make Your
Wishes about You (MY WAY) ACP curriculum and guide for one American Indian tribe; (2) assess
the feasibility of the culturally-tailored MY WAY ACP curriculum and patient education guide
with the tribe; and (3) examine preliminary outcomes of the culturally-tailored MY WAY ACP
curriculum and guide with 70 tribal members. Upon successful completion, it is expected that
this project will develop a feasible culturally-tailored MY WAY that through a
quasi-experimental waitlist design shows promise as an efficacious program with respect to
self-efficacy, readiness, and ACP completion that increases facilitators and decreases
barriers to ACP.
Description:
Research Design. A quasi-experimental waitlist study design will be used to test the
hypothesis that the intervention participants will experience increased ACP self-efficacy,
readiness, and completion rates. It is also expected that the intervention participants will
experience increased facilitators and decreased barriers to ACP. A control sample of waitlist
participants will be used.
Based on the odds of completing an ACP indicated in previously implemented MY WAY
interventions and using 90% power as a threshold, it is estimated that will be a need for at
least an n = 60 to find effects. The intervention group, Cohort 1, will be those who
participated in the first round of both the Community Educational Sessions and Sharing
Sessions. The control group, Cohort 2, will be those who participated in the second round of
both the Community Education Sessions and Sharing Sessions.
Measurement. Process Measures that are a part of the 9-item ACP Engagement Survey that
includes measurement of self-efficacy and readiness, identified from Behavioral Change
Theory, will be used. Self-efficacy and readiness subscales have Likert responses of "not at
all, a little, somewhat, fairly, extremely" and have good reliability and discriminant
validity. Barriers and Facilitators to ACP Questionnaire used in the MY WAY randomized
controlled trial will be used. Pretest interviews with these measurements will be conducted
by telephone or in person at the time of pre-registration for both cohorts by the Project
Coordinator and team members.
Cohort 1 will be interviewed five times: Baseline pretest, Community Information Session
Evaluation; Sharing Session Evaluation, 8 week-post test and 6 month post-test.
Cohort 2 will be interviewed five times: Baseline pretest, 2nd baseline control pretest,
waitlist Community Information Session evaluation, and waitlist Sharing Session evaluation, 8
week post test.
The first interview at registration will serve as baseline for the waitlist group, Cohort 2.
Cohort 2 will be contacted again approximately 6 months later and two-weeks prior to the
second Community Education Session to remind them of their registration and to re-interview
them for their intervention pretest. Posttest interviews will also be conducted by the
Project Coordinator eight weeks post Sharing Session for both groups to capture ACP
self-efficacy, readiness, and completion rates.
Statistical Analyses. Demographic characteristics will be examined using descriptive
statistics (frequencies, measures of central tendency, measures of variation) and stratified
analyses (e.g., delineating measures by demographics, attendance, ACP agreement etc.) to
examine the association between demographics and program outcomes. ACP Engagement and the
Barriers and Facilitators to ACP Questionnaire (ACP measures) will be compared between those
who do and do not engage in Sharing Sessions and between Cohort 1 and Cohort 2. The tribal
community as well as location of Community Education Session will be included in all analyses
as nested participant variables to ensure that differences between tribal communities and
education delivery do not significantly change results. To account for these nested
variables, hierarchical linear modeling or a similar method will be used in comparison
analyses. It is likely that there will be significant attrition from Community Education
Sessions to Sharing Sessions. A Heckman Selectivity analyses will be used to determine if
there are differences between those who complete the full intervention and those who complete
only baseline measures or Community Educational Sessions. Due to the nature of the study,
there may also be attrition due to death. If there are differences in attrition, the inverse
Mill's ratio will be used in all further analyses. Comparison of baseline measures from
pre-registration interviews will serve to ensure that there are no significant differences
between the cohorts.
After these preliminary analyses, change in Cohort 1's ACP measures can be compared to
changes from baseline to the waitlist pretest measures from Cohort 2. Since Cohort 2 received
no intervention in the first 6 months, the analysis will control for natural variations over
time and any measures which show significantly larger change in Cohort 1 can be attributed to
the intervention. Cohorts 1 and 2 can then be combined to examine intervention effects (i.e.,
change from pretest to posttest) in the full sample of participants who experienced the
Sharing Sessions; baseline results for Cohort 1 will be combined with waitlist pretest
results for Cohort 2 and compared to the combined group of 70 Sharing Sessions' posttests.
Finally, the combined cohorts will be compared to a subsample of matched participants who
experienced the Community Education Sessions only to determine how each step in MY WAY
affects the outcome ACP measures.