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Table 1 Baseline characteristic of patients underwent SG or GB bariatric surgery

From: Two-year outcomes of sleeve gastrectomy versus gastric bypass: first report based on Tehran obesity treatment study (TOTS)

  SG (n = 2202) GB (n = 1085) P-value
Sex female, 1683 (76.4) 903 (83.2) < 0.001
Age, year, 38.0 ± 11.8 39.4 ± 10.7 .002
Age groups, n (%)    0.001
  < 40 1264 (57.8) 561 (51.9)  
  ≥ 40 922 (42.2%) 519 (48.1%)  
Fat mass 59.7 ± 11.6 60.7 ± 11.6 0.020
Fat percent 49.6 ± 4.8 50.1 ± 4.8 0.004
Smoking status    .031
 Never smokers 1808 (87.2) 916 (90.4)  
 Current smokers 164 (7.9) 59 (5.8)  
Anthropometric indices
BMI, kg/m2 44.6 ± 5.7 45.5 ± 6.1 < 0.001
BMI groups    < 0.001
 BMI < 45 kg/m2 1306 (59.6) 557 (51.4)  
 BMI ≥45 kg/m2 885 (40.4) 526 (48.6)  
Weight, kg 121.0 ± 21.0 121.4 ± 20.0 .596
Height, cm 164.5 ± 9.4 163.1 ± 8.8 < 0.001
Waist circumference, cm 123.2 ± 15.1 124.3 ± 14.3 .061
Metabolic indices
 SBP (mmHg) 123.6 ± 12.9 123.4 ± 12.1 .776
 DBP (mmHg) 79.7 ± 8.1 79.4 ± 7.4 .207
 FPG (mg/dL) 105.8 ± 28.5 117.9 ± 49.9 < 0.001
 HbA1c% 5.5 (5.1–6.0) 5.6 (5.2–6.4) < 0.001
 Triglyceride, mg/dL 140 (103–187) 143 (107–195) .103
 HDL, mg/dL 47.4 ± 12.0 47.0 ± 11.3 .423
 LDL, mg/dL 112.3 ± 31.5 109.5 ± 32.2 .023
 Total cholesterol, mg/dL 190.8 ± 37.7 189.4 ± 39.6 .370
 Creatinine, mg/dL .92 ± .39 .92 ± .41 .899
 AST (U/L) 23.3 ± 13.6 22.9 ± 13.7 .452
 ALT (U/L) 31.1 ± 23.1 29.8 ± 24.2 .121
Medication
 Insulin 31 (8.7) 69 (22.9) < 0.001
 Oral glycemic medicines 206 (58.1) 175 (58.2) .329
 Dyslipidemia medicines 448 (20.3) 307 (28.3) < 0.001
 Blood pressure medicines 469 (21.3) 278 (25.6) .006
Comorbidities
 Diabetes 493 (24.1) 376 (35.9) < 0.001
 Hypertension 622 (30.2) 329 (32.0) .321
 Dyslipidemia 1820 (85.5) 926 (87.0) .256
  1. SG sleeve gastrectomy, GB gastric bypass, WC waist circumference, BMI body mass index, SBP systolic blood pressure, DBP diastolic blood pressure, FPG fasting plasma glucose, TG triglyceride, HDL high-density lipoprotein, ALT alanine transaminase, AST aspartate transaminase
  2. Data are presented as mean ± SD or n (%) expect Triglyceride and HbA1c which are presented as median (IQ 25–75)