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Table 3 Relation between weight categories and age, diet quality index, smoking habit, physical activity and current drug use based on BMI classification

From: Differences between men and women in self-reported body mass index and its relation to drug use

  Underweight U M (SD) Normal N M (SD) Overweight Ov M (SD) Obesity Ob M (SD) Total M (SD) df F p Post hoc
  U v N U v Ov U v Ob N v Ov N v Ob Ov v Ob
Age (years) 19.72 (1.71) 19.83 (1.71) 20.26 (1.80) 20.54 (1.97) 19.91 (1.74) 3, 3299 12.547 0.001***   * * *** *  
Physical activity (frequency) 2.60 (1.14) 2.87 (1.13) 2.91 (1.05) 2.65 (0.94) 2.86 (1.11) 3, 3262 3.341 0.018* * **   *   
Diet Quality Index (frequency) 12.36 (2.22) 12.24 (2.11) 12.05 (2.14) 12.04 (1.89) 12.21 (2.12) 3, 3264 1.392 0.243       
Overall drug use 1.53 (0.40) 1.60 (0.36) 1.65 (0.36) 1.72 (0.51) 1.60 (0.37) 3, 3226 6.961 0.001***   * * *   
High-frequency drug use 2.27 (0.92) 2.53 (0.88) 2.65 (0.88) 2.63 (0.94) 2.54 (0.88) 3, 3260 6.797 0.001*** * **   *   
Medium-frequency drug use 1.27 (0.55) 1.22 (0.46) 1.24 (0.47) 1.45 (0.74) 1.23 (0.47) 3, 3267 5.293 0.001**      ** *
Low-frequency drug use 1.03 (0.12) 1.04 (0.16) 1.05 (0.17) 1.09 (0.35) 1.04 (0.17) 3, 3242 3.028 0.028*      *  
  1. Total sample.
  2. Note: Significance levels for each ANOVA and Scheffé’s post-hoc comparison are depicted by: *p < 0.05, **p < 0.01, ***p < 0.005.