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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