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Table 1 Socio-demographic and information regarding eating disorders (n = 454)

From: Cognitive behaviour therapy response and dropout rate across purging and nonpurging bulimia nervosa and binge eating disorder: DSM-5 implications

  Descriptives Factor 1Contrasts: mean difference (MD) or OR
BN-P BN-NP BED Group BN-NP vs BN-P BED vs BN-P BED vs BN-NP
(n = 327) (n = 40) (n = 87) F or χ2 p MD or OR p MD or OR p MD or OR p
Body Mass Index (current); mean (SD) 24.3 (5.2) 26.4 (5.6) 35.9 (5.6) 134.5 <.001 2.07 .086 11.5* .001 9.46* 001
Body Mass Index (Maximum); mean (SD) 27.4 (5.6) 28.0 (5.5) 37.3 (5.5) 89.04 <.001 0.61 .823 9.88* .001 9.27* .001
Body Mass Index (Minimum); mean (SD) 19.8 (2.9) 20.2 (2.7) 23.8 (3.9) 44.73 <.001 0.39 .790 3.99* .001 3.61* .001
Number of previous treatments; mean (SD) 0.72 (0.9) 0.63 (0.7) 0.48 (0.9) 2.401 .092       
Motivation to treatment Own motivation 55.4% 60.0% 55.6% 14.95 .060       
  Derivation 26.0% 35.0% 37.0%         
  Pressures 18.6% 5.0% 7.4%         
Civil status; % Single or separated 81.8% 80.0% 53.7% 38.48 <.001 1.12 .787 3.87* .001 3.45* .001
  Married-couple 18.2% 20.0% 46.3%         
Employment status; % Employed 82.5% 86.1% 80.0% 0.657 .720       
Age (years-old); mean (SD) 26.2 (6.9) 27.2 (9.1) 34.1 (9.6) 35.27 <.001 1.04 .721 7.91* .001 6.87* .001
Onset of ED (years-old); mean (SD) 19.3 (6.3) 19.8 (8.9) 23.2 (11.0) 7.352 .001 0.45 .947 3.88* .001 3.43* .042
Length of ED (years); mean (SD) 7.5 (5.7) 7.0 (5.4) 10.6 (8.1) 7.809 <.001 0.55 .883 3.10* .001 3.66* .016
  1. 1Mean difference for quantitative variables and odds ratio for categorical, for significant comparisons. P-values in the table include Bonferroni-Holm’s correction.