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Table 1 Demographic data of seventy post-bariatric surgery patients; overall and according to weight loss status

From: Skin manifestations after bariatric surgery

  Total patients (N = 70) Non-successful weight loss patients (N = 24, 34.3%) Successful weight loss patients (N = 46, 65.7%)
Mean age (SD) 41 (9.6) 40 (8.7) 42 (10)
Sex
 Male (%) 24 (34.3%) 11 (45.8%) 13 (28.3%)
 Female (%) 46 (65.7%) 13 (54.2%) 33 (71.7%)
Bariatric surgery
 RYGBa 48 (68.6%) 17 (70.8%) 31 (67.4%)
 SGa 22 (31.4%) 7 (29.2%) 15 (32.6%)
Mean (SD) months after surgery 14.5 (20) 9.98 (14.8) 18 (20.8)
Mean (SD) preoperative weight 131.38 (29.85) 137.22 (28.82) 128.33 (30.24)
Mean (SD) preoperative BMI 43.38 (9.68) 50.17 (9.54) 47.44 (9.73)
Mean (SD) current weight 94.83 (23.9) 114.7 (24.88) 84.47 (15.46)
Mean (SD) current BMIa 34.9 (8.14) 42 (8.43) 31.3 (5.03)
Mean (SD) total weight reduction percentage 27.31 (27.37) 16.2 (6.95) 33.11 (7.81)
Mean (SD) EBWLa percentage 60.7 (26.2) 32.9 (13) 75.2 (18.4)
Diet modification
 Yes (%) 59 (84.3%) 21 (87.5%) 38 (82.6%)
 No (%) 11 (15.7%) 3 (12.5%) 8 (17.4%)
Underlying diseases
 Hypertension, n (%) 42 (60%) 15 (62.5%) 27 (58.7%)
 Dyslipidemia, n (%) 38 (54.3%) 16 (66.7%) 22 (47.8%)
 Diabetes, n (%) 37 (52.9%) 15 (62.5%) 22 (47.8%)
 PCOSa, n (%) 19 (27.1%) 5 (20.8%) 14 (30.4%)
 Othersb, n (%) 100 (142.9%) 37 (154.7%) 74 (158.7%)
  1. aBMI body mass index, EBWL percentage excess body weight loss percentage, calculated by [(pre-operative BMI – follow-up BMI)/ (pre-operative BMI – Ideal Body Weight (IBW))] × 100. Ideal body weight was based on a BMI of 25 kg/m2, RYGB Roux-en-Y gastric bypass, PCOS polycystic ovarian syndrome, SG sleeve gastrectomy; (kg/m2)
  2. bOthers underlying diseases are referred to coronary artery diseases, obstructive sleep apnea (OSA), non-alcoholic steatohepatitis (NASH)/non-alcoholic fatty liver disease (NAFLD), kidney disease, inflammatory diseases, hypothyroidism, malignancy, hyperuricemia
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