Convenience samples and caregiving research: How generalizable are the findings?

Rachel A. Pruchno, Jonathan E. Brill, Yvonne Shands, Judith R. Gordon, Maureen Wilson Genderson, Miriam Rose, Francine Cartwright

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

Purpose: We contrast characteristics of respondents recruited using convenience strategies with those of respondents recruited by random digit dial (RDD) methods. We compare sample variances, means, and interrelationships among variables generated from the convenience and RDD samples. Design and Methods: Women aged 50 to 64 who work full time and provide care to a community-dwelling older person were recruited using either RDD (N = 55) or convenience methods (N = 87). Telephone interviews were conducted using reliable, valid measures of demographics, characteristics of the care recipient, help provided to the care recipient, evaluations of caregiver-care recipient relationship, and outcomes common to caregiving research. Results: Convenience and RDD samples had similar variances on 68.4% of the examined variables. We found significant mean differences for 63% of the variables examined. Bivariate correlations suggest that one would reach different conclusions using the convenience and RDD sample data sets. Implications: Researchers should use convenience samples cautiously, as they may have limited generalizability.

Original languageEnglish (US)
Pages (from-to)820-827
Number of pages8
JournalGerontologist
Volume48
Issue number6
DOIs
StatePublished - Dec 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Gerontology
  • Geriatrics and Gerontology

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