Table 4

Reliability and validity studies of physical activity estimates
First author (year) Focus of research Research findings
Yore (2007) Reliability and validity using comparison with physical measures and repeated telephone interviews Moderate activity group k = .35-.53
Vigorous activity k = 80-.86;
Recommended activity k = .67-.84;
Strengthening measures k= .85-.92
Self-reports/ personal log k = .40 -.51
Self-reports/accelerometer k = ≤ .31
Yore (2005) Reliability using repeated measures and self-reported logs 1-5 days between surveys k = 1.0
10-18 days between surveys k =.45
10-19 days between surveys k =.40
Everson (2005) Reliability using test/retest telephone surveys including gender and racial differences among indicators Moderate activity ICC = .32-.58
Vigorous activity ICC = .55-.85
Leisure activity ICC = .46-.68
Occupational activity ICC =.82
Sedentary indicators ICC = .32-.90
Brown (2004) Reliability using test/retest telephone surveys Percent agreement for classification of active/insufficiently active/ sedentary 77.6;
All activity groups k = .23-.56
Walking measures ICC = .45
Moderate activity ICC= .44
Vigorous activity ICC= .39
Hutto (2008) Reliability of questions when question order is changed Question order effect BRFSS and alternate order, respectively
Walking (37.7 , 41.0)
Vigorous Activity (34.7, 37.0)
Moderate Activity (40.3, 30.5)
Meeting Physical Activity Recommendations (53.9, 51.7)
Pettee (2008) Reliability of questions over different time periods ICC= .42 and .55 for 3 week and 1 week test/retest on TV watching and physical activity question
Carlson (2009) Validity testing comparing prevalence across surveys and methods Active: mean difference BRFSS/ NHIS: 18.1
Active: mean difference BRFSS/ NHANES: 14.8
Inactive: mean difference BRFSS/ NHIS: 26.8
Inactive: mean difference BRFSS/ NHANES: 18.5
Reis (2005) Validity testing of multiple indicators from OPAQ to single question on the BRFSS Agreement between single BRFSS occupational measure and OPAQ: k= .71

Pierannunzi et al.

Pierannunzi et al. BMC Medical Research Methodology 2013 13:49   doi:10.1186/1471-2288-13-49

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