Department of Quantitative Health Sciences
Patient Compliance; Self Report; Validation Studies
Behavior and Behavior Mechanisms | Epidemiology | Health Services Research | Public Health
BACKGROUND: Adherences to treatments that require a behavioral action often rely on self-reported recall, yet it is vital to determine whether real time self reporting of adherence using a simple logbook accurately captures adherence. The purpose of this study was to determine whether real time self-reported adherence is an accurate measurement of device usage during a clinical trial by comparing it to electronic recording.
METHODS: Using data collected from older adult men and women (N=135, mean age 82.3 yrs; range 66 to 98 yrs) participating in a clinical trial evaluating a vibrating platform for the treatment of osteoporosis, daily adherence to platform treatment was monitored using both self-reported written logs and electronically recorded radio-frequency identification card usage, enabling a direct comparison of the two methods over one year. Agreement between methods was also evaluated after stratification by age, gender, time in study, and cognition status.
RESULTS: The two methods were in high agreement (overall intraclass correlation coefficient = 0.96). The agreement between the two methods did not differ between age groups, sex, time in study and cognitive function.
CONCLUSIONS: Using a log book to report adherence to a daily intervention requiring a behavioral action in older adults is an accurate and simple approach to use in clinical trials, as evidenced by the high degree of concordance with an electronic monitor.
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Citation: BMC Med Res Methodol. 2012 Nov 14;12:171. doi: 10.1186/1471-2288-12-171. Link to article on publisher's site
DOI of Published Version
BMC medical research methodology
Jeffrey, Brianne A.; Hannan, Marian T.; Quinn, Emily K.; Zimmerman, Sheryl; Barton, Bruce A.; Rubin, Clinton T.; and Kiel, Douglas P., "Self-reported adherence with the use of a device in a clinical trial as validated by electronic monitors: the VIBES study" (2012). Open Access Articles. 2385.