Factors associated with participant compliance in studies using accelerometers

Hong Lee, Duncan J. Macfarlane, T. H. Lam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

Some participants wear the accelerometer for the duration specified by the researchers but many do not. We investigated a range of demographic factors associated with participant compliance in obtaining analyzable accelerometer data. A total of 3601 participants (aged 47.6 ± 13.1 years, 44.6% male) were included. They were asked to wear an accelerometer (ActiGraph) for four consecutive days after completing a household survey during March 2009-January 2011 in Hong Kong. Participants wore the accelerometer on average for 13.9. h in a 24-h day. No significant difference was found between males and females (p = 0.38). Using log-linear regression, it was found that older participants (0.5% more wearing hours for each year of age, p< 0.001), those with full-time job (p< 0.01), with tertiary education (p< 0.01), non-smokers (p< 0.01) and with high self-reported health (p< 0.05) wore the accelerometer for more hours. These results provide details for estimating compliance rates for samples with different characteristics and thus sample size calculation to account for participant compliance.
Original languageEnglish
Pages (from-to)912-917
Number of pages6
JournalGait and Posture
Volume38
Issue number4
DOIs
Publication statusPublished - 1 Sep 2013
Externally publishedYes

Keywords

  • Accelerometry
  • Activity monitor
  • Adherence
  • Participation
  • Physical activity

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Rehabilitation

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