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Table 3 Descriptive statistics and correlations of participants’ measured and self-reported weights, heights, and BMIs

From: Determinant factors of the difference between self-reported weight and measured weight among Japanese

Statistics Weight (kg) Height (cm) BMI (kg/m2)
Men (n = 199)
 Measured value (M ± SD) 68.4 ± 9.9 170.6 ± 5.6 23.5 ± 3.1
 Self-reported value (M ± SD) 67.7 ± 9.6b,* 170.8 ± 5.6b,* 23.2 ± 2.9b,*
 Pearson’s correlation coefficient 0.974** 0.980** 0.962**
 Mean differencea −0.7 0.01 −0.3
 Range −4.0 to 5.0 −4.3 to7.5 −1.9 to 2.6
 95 % confidence interval −1.07 to −0.45 0.00–0.31 −0.42 to −0.19
 Mean absolute value of the differencea 1.45 0.75 0.57
 95 % confidence interval 1.20–1.71 0.64–0.87 0.47–0.67
Women (n = 164)
 Measured value (M ± SD) 53.4 ± 6.8 157.7 ± 6.0 21.5 ± 2.8
 Self-reported value (M ± SD) 52.8 ± 6.5b,* 157.5 ± 5.9b,* 21.3 ± 2.6b,*
 Pearson’s correlation coefficient 0.986** 0.989** 0.979**
 Mean differencea −0.67 −0.16 −0.23
 Range −6.2 to 2.5 −2.7 to 3.2 −2.8 to 1.3
 95 % confidence interval −0.85 to −0.49 −0.30 to −0.03 −0.32 to 0.14
 Mean absolute value of the differencea 1.01 0.68 0.44
 95 % confidence interval 0.88–1.15 0.60–0.77 0.37–0.51
  1. BMI Body mass index
  2. aDifferences were obtained by subtracting the self-reported value from the measured value. A negative value reflects underestimating and a positive value reflects overestimating
  3. bSignificant difference between self-reported and measured values
  4. p < 0.05, ** p < 0.01