Ann Henshaw Gardiner Professor and Senior Fellow.
Differential attrition in a caregiver skill training trial
Article first published online: 14 SEP 2006
Copyright © 2006 Wiley Periodicals, Inc.
Research in Nursing & Health
Volume 29, Issue 5, pages 498–506, October 2006
How to Cite
Davis, L. L., Weaver, M. and Habermann, B. (2006), Differential attrition in a caregiver skill training trial. Res. Nurs. Health, 29: 498–506. doi: 10.1002/nur.20138
- Issue published online: 14 SEP 2006
- Article first published online: 14 SEP 2006
- Manuscript Accepted: 5 MAY 2006
- The National Institute of Nursing Research. Grant Number: R01 NR 08285
- trial attrition;
- Alzheimer's disease;
- Parkinson's disease;
Participant attrition in randomized trials can reduce statistical power and bias outcomes. However, elective withdrawals are seldom discussed in trial reports. We examined factors associated with elective withdrawals for the first 131 Alzheimer's disease (AD) and Parkinson's disease (PD) caregiver participants that entered Project ASSIST (Assistance, Support and Self-health Initiated through Skill Training), an on-going trial of caregiver skill training interventions. After 20 months of recruitment, 14 (11%) of the 131 ASSIST participants had electively withdrawn before completing the final assessment. Survival analysis demonstrated AD caregivers and non-spousal caregivers dropped out earlier than PD and spousal caregivers, even after controlling for selected baseline covariates. Findings suggest caregiver trial contact strategies may need to be tailored to retain different caregiver groups. © 2006 Wiley Periodicals, Inc. Res Nurs Health 29: 498–506, 2006