Table 3 Explanatory factors for differences between self-report and measurement in OA patients (n = 449)
From: The validity of self-reported body mass index in a population-based osteoarthritis study
Height difference | Weight difference | BMI difference | |
|---|---|---|---|
(measured minus self-report) | (measured minus self-report) | (measured minus self-report) | |
B (95% CI) | B (95% CI) | B (95% CI) | |
Age, mean (SD) | -0.08 (-0.11, -0.05) | -0.07 (-0.13, -0.01) | 0.00 (-0.02, 0.03) |
Sex, female | -0.17 (-0.75, 0.41) | 0.23 (-0.81, 1.27) | 0.33 (-0.06, 0.71) |
BMI-categorya | |||
Overweight (25–29.99 kg/m2) | -0.43 (-0.97, 0.11) | 0.61 (-0.35, 1.57) | 0.42 (0.06, 0.77) |
Obese (≥30 kg/m2) | -0.94 (-1.57, -0.31) | 2.49 (1.34, 3.64) | 1.30 (0.86, 1.75) |
Education status, >1 year college/university | -0.25 (-0.91, 0.42) | 0.91 (-0.10, 1.91) | 0.37 (-0.04, 0.77) |
IPAQ, low physical activity levelb | |||
Moderate activity | 0.34 (-0.37, 1.06) | -1.18 (-2.24, -0.13) | -0.54 (-0.96, -0.12) |
Vigorous activity | -0.06 (-0.64, 0.52) | -0.29 (-1.46, 0.87) | -0.11 (-0.55, 0.33) |
Smoker | -0.44 (-1.11, 0.23) | -0.16 (-1.26, 0.94) | 0.10 (-0.31, 0.51) |
SF-36 mental component score [0–100] | 0.01 (-0.01, 0.04) | 0.01 (-0.03, 0.05) | -0.00 (-0.02, 0.01) |
Time between self-report and measurement | -0.15 (-0.23, -0.07) | 0.08 (-0.03, 0.20) | 0.08 (0.04, 0.12) |