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Table 2 Means (Standard Deviations) for EDI-3 Subscales and Percentage for Weight-Related Concerns and Behaviors among Chinese Adolescents

From: Associations between body mass index, weight control concerns and behaviors, and eating disorder symptoms among non-clinical Chinese adolescents

  Boys (n = 1525) Girls (n = 2019) Total (n = 3544) t or χ2
EDI subscale
   B 1.7 ± 2.3 3.4 ± 2.5 2.7 ± 2.6 -19.96***
   B ≥ 5 14.0% 34.7% 25.8% 194.71***
   ID 8.9 ± 3.2 9.9 ± 3.3 9.5 ± 3.3 -8.83***
   ID ≥ 11 28.0% 42.4% 36.2% 77.46***
   P 5.6 ± 2.6 5.8 ± 2.3 5.7 ± 2.4 -2.88**
   P ≥ 10 5.1% 5.0% 5.0% 0.048
   MF 3.9 ± 2.2 4.4 ± 2.0 4.2 ± 2.1 -7.41***
   MF ≥ 6 22.7% 28.7% 26.1% 16.16***
   DT 2.3 ± 2.9 4.2 ± 3.1 3.4 ± 3.2 -18.94***
   BD 2.1 ± 2.5 2.5 ± 2.5 2.3 ± 2.5 -4.81***
   LSE 1.0 ± 1.5 1.3 ± 1.6 1.2 ± 1.5 -4.99***
Weight control concerns (Ever considered of it)    
   Avoid ate sweet foods 32.9% 47.3% 35.0% 74.29***
   Avoid ate fatty foods 46.4% 71.8% 71.8% 235.13***
   Skip staple food 7.0% 18.5% 13.6% 98.07***
   Exercise 50.4% 71.7% 62.5% 167.33***
   Diet pills, foods or tea 5.3% 17.2% 12.1% 116.29***
   Surgery 2.0% 4.5% 3.5% 16.05***
   Smoking 1.5% 1.3% 1.4% 0.31
   Dieting 9.4% 30.0% 21.1% 222.02***
Weight control behaviors     
   Avoid ate sweet foods 27.5% 36.7% 32.7% 33.44***
   Avoid ate fatty foods 34.1% 56.6% 46.9% 174.55***
   Skip staple food 5.9% 15.9% 11.6% 85.36***
   Excessive exercise 44.1% 69.5% 58.6% 232.26***
   Diet pills 4.1% 15.9% 10.8% 127.62***
   Diet foods or tea 2.4% 6.2% 4.6% 28.30***
   Surgery 1.7% 4.4% 3.2% 19.81***
   Smoking 1.1% 1.0% 1.1% 0.04
   Dieting 7.0% 27.2% 18.5% 235.05***
  1. Abbreviations: DT, drive for thinness; BD, body dissatisfaction; B, bulimia; LSE, low self-esteem; ID, interoceptive deficits; P, perfectionism; MF, maturity fears.
  2. Data are given as percentage or mean ± standard deviation (after adjusted the clustering effect of school, gender, parent's education and careers as well as family income level).
  3. Significant difference between boys and girls, t-test for means or χ2-test for proportion, ** P < 0.01, *** P < 0.001.