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Difference between male and female proportions according to BMI classes, school health campaign.
| BMI classes | Male (n = 11,537) | Female (n = 8536) | z | P value |
|---|---|---|---|---|
| Underweight (BMI < 18.5) | 36.9% | 30.5% | 9.453 | <.001 |
| Normal (18.5 ≤ BMI ≤ 24.9) | 37.4% | 43.6% | 8.783 | <.001 |
| Overweight (25.0 ≤ BMI ≤ 29.9) | 14.6% | 15.1% | 1.075 | .283 |
| Obese (BMI ≥ 30) | 11.1% | 10.8% | 0.672 | .502 |
BMI = body mass index.
