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Table 1 Univariate analysis of weight loss maintenance at the 12-month follow-up

From: Predictors of successful long-term weight loss maintenance: a two-year follow-up

Variable Successful Unsuccessful P value
Number 34 52  
Physical characteristics    
 Age (years) 50.6 ± 10.9 46.8 ± 11.7 0.14
 Pre BMI (kg/m2) 30.7 ± 4.9 31.6 ± 4.7 0.41
 Pre BMI ≥ 40 kg/m2 (%) 5.9 3.8 0.65
 Pre BMI ≥ 35 kg/m2 (%) 17.6 17.3 0.97
 Pre BW (kg) 75.0 ± 12.1 77.9 ± 12.3 0.30
 ∆ BW (kg) −13.3 ± 5.6 −8.4 ± 2.6 <0.0001
Social status (%)    
 Level of schooling, >12 years 50.0 46.2 0.73
 Employment status, working 58.8 59.6 1.0
 Marital status, married 61.8 65.3 0.73
Obesity-related comorbidities (%)    
 Type 2 diabetes mellitus 20.6 34.6 0.16
 Hypertension 20.6 34.6 0.16
Psychological characteristics (score)    
 Pre CES-D 9.7 ± 7.2 12.3 ± 6.5 0.085
 Post CES-D 9.7 ± 7.2 15.0 ± 10.1 <0.01
 Pre STAI-state 39.9 ± 7.4 41.9 ± 10.6 0.34
 Post STAI-state 41.5 ± 10.6 42.5 ± 11.2 0.68
 Pre STAI-trait 42.2 ± 10.8 45.2 ± 12.8 0.26
 Post STAI-trait 42.2 ± 10.6 42.5 ± 11.2 0.68
 Pre BES 12.2 ± 6.9 13.0 ± 6.4 0.56
 Post BES 5.6 ± 4.7 8.4 ± 5.8 0.021
 Pre dietary restraint (TFEQ) 7.6 ± 3.8 7.6 ± 4.0 0.99
 Post dietary restraint (TFEQ) 16.0 ± 3.0 15.0 ± 3.2 0.14
 Pre disinhibition (TFEQ) 8.9 ± 3.6 9.8 ± 3.9 0.28
 Post disinhibition (TFEQ) 5.7 ± 3.1 7.5 ± 3.6 0.025
 Pre hunger (TFEQ) 6.0 ± 2.9 6.4 ± 2.9 0.55
 Post hunger (TFEQ) 2.9 ± 2.5 4.1 ± 2.8 0.064
 Pre YFAS symptom 1.9 ± 1.5 2.2 ± 1.4 0.27
 Post YFAS symptom 1.7 ± 0.97 2.7 ± 1.6 0.001
  1. Quantitative data are shown as mean ± SD. Qualitative data are shown as percentage. Two-sample t-test and χ 2-test or Fisher’s exact test were used
  2. Intervention was judged successful for subjects who lost at least 10% of their initial weight during the weight loss intervention and had maintained the loss at the12-month follow-up. Intervention was unsuccessful for subjects who did not meet the above criteria at the 12-month follow-up
  3. Pre: data at the beginning of the weight loss intervention
  4. Post: data at the end of the weight loss intervention
  5. ∆ BW: Body weight at the end of weight loss intervention minus body weight at the beginning of weight loss intervention
  6. BMI Body Mass Index, BW Body Weight, CES-D Center for Epidemiologic Studies-Depression Scale, STAI State-Trait Anxiety Inventory, BES Binge Eating Scale, TFEQ Three Factor Eating Questionnaire, YFAS Yale Food Addiction Scale