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Table 2 Comparison between the successful (> 50% EBW loss) vs non-successful surgeries (n = 130)

From: Are there really any predictive factors for a successful weight loss after bariatric surgery?

 Non-successful
n = 26
Successful
n = 104
p
Age (years)
> 50 years of age at the time of surgery
52 ± 8
16 (61.5%)
46 ± 9
40 (38.5%)
0.005
0.04
Female21 (81%)85 (80%)0.55 Fisher
Highschool or higher level of education.12 (46%)55 (53%)0.53
Without a full time job13 (54%)33 (33%)0.05
Married or living with a partner20 (77%)67 (64%)0.22
Medical history
 Altered glucose metabolism18 (69%)57 (55%)0.18
 Hypertension20 (77%)54(52%)0.02
 Dyslipidemia10 (38.5%)28 (27%)0.24
 Hypothyroidism9 (35%)27 (26%)0.37
 Cardiovascular event1 (4%)5 (5%)0.65
 Venous thrombosis0 (0%)3 (3%)0.50
 Sleep Apnea7 (27%)28 (27%)1.0
 Osteoarthrosis8 (31%)19 (18%)0.16
 Previous abdominal surgery18 (69%)48 (46%)0.03
 Depression or anxiety7 (27%)11 (11%)0.03
Total comorbidities3 (3–4)2 (1–3)0.02
Before Surgery
 Maximum weight ever (kg)131.5 (121–146.5)130 (117–140)0.39
 Weight at initial evaluation (kg)124.5 (113.5–135)119.5(108–133)0.319
 BMI at first evaluation (kg/m2)49 (46–53)48 (43–53)0.22
 %EBW loss before surgery7 (1.5–13)3 (0–12)0.29
Type of surgery:
 RYGB13 (50%)36 (35%)0.001
 OAGB5 (19%)59 (57%) 
 Gastric sleeve8 (31%)9 (9%) 
EXERCISE AND DIET AFTER SURGERY
 At least 150 min of physical activity per week (%)7 (27%)32 (31%)0.70
 Average daily calorie intake during the 1st year (kcal)846 (567.5–930)723 (602–955)0.94
 Protein content of the diet (g)50.5 (35–52)47 (32–62)0.82
 Lipid content of the diet (g)30 (16–39)23 (17.5–33)0.58
 Carbohydrate content of the diet (g)92.5 (58–109)92 (73–128)0.25
 %EBW loss 12 months after surgery43 (38–47)66 (60–76)< 0.001
  1. BMI body mass index, EBW excess body weight, RYGB Y-Roux Gastric Bypass, OAGB One anastomosis gastric bypass