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Table 2 BMI Groups by Gender and Grade (N = 1,112)

From: The face of appearance-related social pressure: gender, age and body mass variations in peer and parental pressure during adolescence

  Underweight Low average-weight High average-weight Overweight p
(< 25thpercentile) (25th≥ BMI < 50thpercentile) (50th≥ BMI < 85thpercentile) (BMI ≥ 85thpercentile)
Girls 32.7% 27.5% 31.3% 8.5% .027
Boys 27.7% 25.1% 34.0% 13.2%  
Grade 7 33.6% 27.2% 27.2% 12.0% n.s.
Grade 8 29.5% 27.0% 32.9% 10.6%  
Grade 9 27.6% 24.7% 38.8% 9.0%  
  1. Note. The BMI ranking was assigned using the WHO norms and weight status was classified following Jones & Crawford (2006).