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Table 6 Results (regression coefficients [b] and 95% confidence intervals [95% CI]) of univariate regression analyses for sex, age, BMI status, SES, measured weight, measured height, measured WC and health-related factors in relation to differences (bias) between measured and self-reported BMI, body weight, body height and WC

From: Accuracy of self-reported body weight, height and waist circumference in a Dutch overweight working population

  Bias BMI Bias body weight Bias body height Bias WC
  b 95% CI b 95% CI b 95% CI b 95% CI
Sex -0.01 -0.11, 0.08 0.25* 0.03, 0.47 0.02 -0.16, 0.20 -1.13* -2.21, -0.04
Age 0.03 -0.06, 0.12 0.14 -0.07, 0.35 0.03 -0.14, 0.20 1.23* 0.24, 2.21
BMI status 0.30 0.21, 0.39 0.49 0.26, 0.71 -0.30 -0.47, -0.12 0.25 -0.79, 1.30
SES -0.20 -0.28, -0.10 -0.46 -0.67, -0.25 0.09 -0.08, 0.27 -0.93 -1.94, 0.09
Measured weight (kg) 0.01 0.01, 0.01 0.02 0.02, 0.03 -0.01 -0.01, -0.00 0.01 -0.04, 0.03
Measured height (m) -0.00 -0.01, 0.00 0.01 -0.00, 0.02 0.00 -0.01, 0.01 -4.35 -9.78, 1.07
Measured WC (cm)        0.08 0.02, 0.13
Smoking status -0.04 -0.16, 0.09 -0.21 -0.50, 0.09 -0.07 -0.30, 0.17 -0.27 -1.69, 1.15
Medication use 0.16 0.04, 0.28 0.26 -0.02, 0.54 -0.20 -0.43, 0.02 -0.45 -1.94, 1.03
Frequency of weighing -0.03 -0.12, 0.06 -0.05 -0.26, 0.16 0.08 -0.09, 0.25 0.03 -0.97, 1.02
Losing weight attempts  
1 to 3 attempts 0.05 -0.06, 0.15 0.13 -0.12, 0.37 0.05 -0.14, 0.24 -0.30 -1.49, 0.89
≥ 4 attempts 0.09 -0.04, 0.21 -0.10 -0.40, 0.19 -0.18 -0.41, 0.06 0.93 -0.45, 2.31
  1. *†‡ significant different from the estimate of the reference group (i.e., females, low age, overweight, low SES, non-smoking, no medication use, low frequency of weighing oneself, no attempts to loose weight) or from 0 for measured body weight, height, and WC (* p < 0.05; † p < 0.01; ‡ p < 0.001)