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Table 2 Comparison of measured and self-reported values for height, weight, and BMI overall and by sex, age group, and obesity classification

From: Measuring the accuracy of self-reported height and weight in a community-based sample of young people

    Measured Self-reported Pearson correlation between measured and self-reported Test of equality between measured and self-reported, p-value
    Mean (SD) Median Mean (SD) Median
Total (n=67 ) Height (cm) 173.7 (9.8) 175.0 172.7 (11.9) 174.0 0.94 0.06
Weight (kg) 72.0 (14.7) 70.2 70.1 (14.5) 68.0 0.96* <0.01*
BMI (kg/m2) 23.7 (3.2) 23.2 23.4 (3.2) 23.0 0.84 0.16
Sex Males (n=34) Height (cm) 180.2 (7.5) 180.0 180.5 (8.5) 180.0 0.94 0.66
Weight (kg) 80.2 (14.0) 78.8 79.2 (13.2) 80.0 0.92* 0.28*
BMI (kg/m2) 24.6 (3.3) 24.5 24.2 (2.8) 23.3 0.85 0.21
Females (n=33) Height (cm) 166.9 (6.9) 165.0 164.6 (9.3) 164.0 0.84 0.01
Weight (kg) 63.6 (9.9) 63.1 60.8 (8.8) 60.0 0.93 <0.01
BMI (kg/m2) 22.8 (2.9) 22.0 22.5 (3.4) 21.1 0.82 0.44
Age group (years) 16-19 (n=33 ) Height (cm) 173.6 (11.0) 172.0 172.4 (13.6) 172.0 0.92 0.22
Weight (kg) 70.2 (14.7) 68.0 68.1 (14.6) 65.0 0.94* 0.01*
BMI (kg/m2) 23.1 (2.9) 22.0 22.8 (3.1) 22.6 0.76 0.39
20-29 (n=34 ) Height (cm) 173.8 (8.7) 175.8 172.9 (10.2) 175.5 0.96 0.10
Weight (kg) 73.8 (14.6) 73.3 72.1 (14.4) 70.5 0.96 0.01
BMI (kg/m2) 24.3 (3.4) 24.7 23.9 (3.3) 24.3 0.89 0.23
Obesity classification Non-overweight1 (n=43) Height (cm) 172.4 (9.2) 172.0 171.3 (10.9) 172.0 0.92 0.22
Weight (kg) 65.1 (9.6) 66.0 64.0 (10.4) 64.0 0.96 0.05
BMI (kg/m2) 21.8 (1.8) 21.9 21.7 (2.4) 21.6 0.81* 0.16*
Overweight/obese2 (n=24) Height (cm) 176.1 (10.6) 177.5 175.1 (13.4) 179.5 0.96 0.15
Weight (kg) 84.5 (13.9) 83.5 81.1 (14.6) 80.0 0.93 <0.01
BMI (kg/m2) 27.1 (2.1) 26.2 26.3 (2.3) 25.9 0.40* 0.14*
  1. * Non-parametric equivalent test used (spearman correlation and Wilcoxon signed ranks test).
  2. 1 BMI<25 kg/m2, or BMI less than age-specific cut-offs if under 18 years.
  3. 2 BMI ≥25 kg/m2, or BMI greater than age-specific cut-offs if under 18 years.
  4. Significant p-values (p<0.05) shown in boldface.
  5. SD - standard deviation