Factors affecting sample selection in a randomized trial of balance enhancement: The FICSIT study

James T. Pacala, James Oat Judge, Chad Boult

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE: To determine demographic, functional, and health-related factors that may have influenced the selection of older adults for a randomized trial of balance enhancement. DESIGN: Comparison of participants with nonparticipants at various stages of the recruiting process. SETTING: Northeastern suburban community. PARTICIPANTS: Registered voters aged 75 and older (n = 7191). MEASUREMENTS: Demographic, health-related, functional, balance, gait, and falling characteristics. RESULTS: The overall participation rate in the randomized trial was 1.5%. Compared with nonparticipants, participants were significantly more likely to be male, married, living with others, living in a house, highly educated, healthy, and physically active. CONCLUSION: Recruiting older subjects by mail to studies of rigorous interventions can produce significant selection biases that may limit the population to which results can be generalized.

Original languageEnglish (US)
Pages (from-to)377-382
Number of pages6
JournalJournal of the American Geriatrics Society
Volume44
Issue number4
DOIs
StatePublished - Apr 1996

ASJC Scopus subject areas

  • Geriatrics and Gerontology

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