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 |