Table 3. β1-coefficients of the attribute models to indicate the effect of sex, age, BMI, body fat and PA domain on the absolute and percentage difference (Δ) between measured (SenseWear) and reported (GPAQ) METminutes/week, minutes PA/day and sedentary minutes/day.
The difference between both methods is used as the dependent variable. Absolute differences were calculated as SenseWear minus GPAQ results. Percentage differences are calculated by dividing the absolute difference by the average of the measurements from both methods. Separate models were fitted for each characteristic. Each model included random participant effects clustered per city.
| β1 ± SE | Sex a | Age | BMI | Body fat | PA domain b | ||
|---|---|---|---|---|---|---|---|
| years | kg/m2 | % | Transport | Work | |||
| Δ MVPA EE | METminutes/week | 431.7±344.7 | -6.12±17.59 | -151.57±55.49** | -57.04±20.84** | 153.9±277.5 | -1370.4±521.8** |
| % | 6.12±10.7 | -0.47±0.54 | -2.64±1.73 | -0.43±0.66 | 21.24±8.47* | -38.14±15.91* | |
| Δ Moderate EE | METminutes/week | 27.78±233.52 | -9.75±11.8 | -51.50±38.32 | -13.57±14.47 | -53.13±200.13 | -1136.84±368.99** |
| % | -5.9±13.96 | -0.99±0.70 | -2.35±2.29 | -0.32±0.87 | 1.68±10.87 | -78.25±20.28*** | |
| Δ Vigorous EE | METminutes/week | 400.84±223.6 | 3.37±11.5 | -99.25±36.31** | -43.62±13.47** | 320.83±218.18 | 20.41±396.06 |
| % | 30.32±16.41 | -1.01±0.84 | -5.15±2.68 | -1.91±1.01 | 40.76±15.68** | 33.27±28.58 | |
| Δ MVPA | minutes/day | 4.73±8.91 | -0.24±0.45 | -2.96±1.45* | -0.93±0.55 | 1.42±7.36 | -48.36±13.69*** |
| % | 0.31±10.92 | -0.51±0.55 | -1.96±1.78 | -0.13±0.67 | 14.45±8.38 | -52.29±15.77** | |
| Δ Moderate PA | minutes/day | -2.36±7.45 | -0.29±0.38 | -0.97±1.23 | -0.10±0.46 | -1.54±6.45 | -47.82±11.79*** |
| % | -7.15±14.43 | -1.01±0.73 | -1.6±2.38 | -0.09±0.9 | 2.04±11.20 | -83.03±20.88*** | |
| Δ Vigorous PA | minutes/day | 6.99±4.20 | 0.04±0.22 | -1.96±0.68** | -0.83±0.25** | 4.71±4.21 | 2.1±7.58 |
| % | 28.32±16.34 | -1.05±0.83 | -5.25±2.66 | -1.84±1 | 38.44±15.66* | 31.53±28.52 | |
| Δ SB | minutes/day | -50.9±37.35 | 1.05±1.91 | 12.46±6.03* | 5.03±2.26* | -15.19± 25.64 | 123.45±49.18* |
| % | -9.32±6.75 | 0.11±0.34 | 1.77±1.1 | 0.82±0.41 * | -7.06±4.47 | 32.55±8.57*** | |
a women are the reference category
b leisure time PA is the reference category
Statistical significance is expressed as
*p<0.05
**p<0.01, and
*** p<0.001