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Table 1 Baseline characteristics

From: Weight loss required by the severely obese to achieve clinically important differences in health-related quality of life: two-year prospective cohort study

Characteristic Wait-listed (number = 150) Medical-management (number = 200) Surgical-treatment (number = 150) P-valuea
Female (number (%)) 136 (91) 174 (87) 131 (87) 0.5
Age (years, mean (SD)) 43.6 (9.2) 43.9 (10.0) 43.5 (9.5) 0.9
Married (number (%)) 80 (54) 116 (58) 93 (62) 0.1
White (number (%)) 139 (93) 178 (89) 141 (94) 0.2
Weight (kg, mean (SD)) 134.7 (25.1) 132.9 (24.7) 127.9 (25.2) 0.05
BMI (kg/m2, mean (SD)) 49.4 (8.2) 48.0 (8.2) 46.2 (7.4) 0.003
Hypertension (number (%)) 99 (66) 134 (67) 92 (61) 0.5
Dyslipidemia (number (%)) 89 (59) 123 (62) 90 (60) 0.2
Diabetes (number (%)) 75 (50) 80 (40) 67 (45) 0.9
Depression (number (%)) 98 (65) 133 (67) 88 (59) 0.3
SF-12 PCS (mean (SD)) 35.5 (10.7) 37.1 (10.1) 41.5 (9.3) < 0.001
SF-12 MCS (mean (SD)) 38.5 (10.9) 40.8 (10.1) 46.9 (8.5) < 0.001
EQ-Index (mean (SD)) 0.691 (0.207) 0.716 (0.196) 0.792 (0.149) < 0.001
EQ-VAS (mean (SD)) 52.9 (22.1) 55.0 (19.4) 63.6 (18.6) < 0.001
IWQOL-lite Total Score (mean (SD)) 41.6 (21.1) 44.9 (20.4) 49.9 (19.3) < 0.001
  1. aUsing ANOVA for continuous variables and chi-square for dichotomous variables.
  2. BMI, body mass index; EQ-Index, EQ-5D questionnaire index score; EQ-VAS, EQ-5D questionnaire visual analog scale score; IWQOL-Lite, Impact of Weight on Quality of Life - Lite questionnaire; MCS, mental component summary score; PCS, physical component summary score; SD, standard deviation; SF-12, Short Form 12 questionnaire.