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Table 1 Baseline demographic, clinical, and anthropometric characteristics

From: Early postoperative weight loss predicts maximal weight loss after sleeve gastrectomy and Roux-en-Y gastric bypass

  All UCLH UHP P
RYGBP SG RYGBP SG RYGBP SG
All 918 538 436 443 482 95 <0.001a
Women 711 (77 %) 393 (73 %) 350 (80 %) 319 (72 %) 361 (75 %) 74 (78 %) 0.75a
Men 207 (23 %) 145 (27 %) 86 (20 %) 124 (28 %) 121 (25 %) 21 (22 %)
T2D 274 (30 %) 188 (35 %) 145 (33 %) 150 (34 %) 129 (27 %) 38 (40 %) 0.06a
Ethnicity
 White 824 (90 %) 439 (82 %) 342 (78 %) 344 (78 %) 482 95  
 Other 94 (10 %) 99 (18 %) 94 (22 %) 99 (22 %)  
Mean age ± SD (years) 43.8 (10.6) 46.5 (11.1) 43.8 (11.9) 44.7 (10.4) 43.7 (10.1) 54.5 (10.5) 0.04b
Mean BMI ± SD (kg/m2) 48.3 (7.7) 49.8 (8.8) 46.0 (5.7) 50.0 (9.1) 50.3 (8.6) 48.6 (7.6) <0.001b
  1. aProcedure and sex distribution, and T2D status were compared between centres using Pearson’s χ 2 tests
  2. bComparisons of mean age and BMI between centres were performed using unpaired two-tailed t tests