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Table 3 Motivation, goal attainment, and expectations between patients opting for non-surgical and surgical obesity treatment

From: A comparison of behavioral and psychological characteristics of patients opting for surgical and conservative treatment for morbid obesity

    Non-surgical n = 261 Bariatric surgery n = 301 Adjusted for gender/age/BMI   
Range α Mean (SD) Mean (SD) F p ηp2
Motivation for weight loss 1–10   9.1 (1.1) 9.2 (1.4) 0.03 0.87  
Social influence on treatment decision 1–5   2.6 (1.1) 2.3 (1.2) 12.22 <0.001 0.023
Readiness for change
 - eat less 0–10   9.0 (1.2) 9.0 (1.3) 0.03 0.86  
 - less overeating 0–10   8.2 (2.6) 8.4 (2.5) 0.43 0.51  
 - increase activity 0–10   9.0 (1.2) 8.4 (1.6) 26.11 <0.001 0.047
General self-efficacy 1–4 0.88 2.9 (0.5) 3.1 (0.4) 20.23 <0.001 0.037
Action + Coping planning
 - eating 1–4 0.86 2.8 (0.5) 3.0 (0.5) 23.92 <0.001 0.043
Action + Coping planning
 - physical activity 1–4 0.92 2.6 (0.6) 2.8 (0.6) 2.68 0.10  
Weight loss goal
 - % happy weight 2–60   29.8 (9.4) 37.9 (8.0) 59.76 <0.001 0.101
Future expectations
 - well-being 1–10 0.88 7.6 (1.8) 8.4 (1.4) 38.08 <0.001 0.067
 - social competence 1–10 0.71 6.8 (1.9) 7.2 (1.8) 8.74 <0.01 0.016
  1. Note: α Cronbach’s alpha, SD standard deviation, Estimate of effect size: ηp2 = Partial Eta-squared