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. 2020 Aug 10;12(8):2396. doi: 10.3390/nu12082396

Table 1.

Characteristics across human studies—Groups 1 and 3.

Follow up after Surgery 1 (Months) Median IQR Minimum Maximum
All (n = 30) 6.0 [0.5–24.0] 0.5 112.8
BS and microbiota in humans (n = 26) 6.0 [5.3–12.0] 1.0 112.8
BS and probiotics in humans (n = 4) 4.5 [2.4–6.0] 0.5 6.0
Sample size
All (n = 33) 24.0 [14.0–45.0] 6.0 267.0
BS and microbiota in humans (n = 29) 21.0 [13.0–43.0] 6.0 267.0
BS and probiotics in humans (n = 4) 52.0 [43.0–70.0] 40.0 100.0
Age of Study Population 2 (Years)
All (n = 27) 43.5 [39.0–47.8] 23.5 51.5
BS and microbiota in humans (n = 23) 43.5 [39.0–47.8] 23.5 51.5
BS and probiotics in humans (n = 4) 43.4 [40.2–45.7] 35.1 48.0
Sexes of Study Population 3 Both Sexes Only Females Only Males
All (n = 33) n = 26 n = 7 n = 0
BS and microbiota in humans (n = 29) n = 22 n = 7 n = 0
BS and probiotics in humans (n = 4) n = 4 n = 0 n = 0
BMI: Categorization 4,5 Overweight (25–< 29.9) Obesity Class 1 (30–< 34.9) Obesity Class 2 (35–< 39.9) Obesity Class 3 (≥ 40)
All (n = 30) n = 6 n = 9 n = 13 n = 23
BS and microbiota in humans (n = 26) n = 6 n = 9 n = 13 n = 19
BS and probiotics in humans (n = 4) n = 0 n = 0 n = 0 n = 4
Diabetes Status 6 Only Patients with Diabetes Patients with and without Diabetes No Patients with Diabetes
All (n = 24) n = 4 n = 15 n = 5
BS and microbiota in humans (n = 21) n = 4 n = 12 n = 5
BS and probiotics in humans (n = 3) n = 0 n = 3 n = 0
Type of Surgery 7 RYGB LSG AGB Other 8
All (n = 33) n = 20 n = 12 n = 3 n = 8
BS and microbiota in humans (n = 29) n = 18 n = 10 n = 3 n = 7
BS and probiotics in humans (n = 4) n = 2 n = 2 n = 0 n = 1

1 Two studies did not report their exact study length; 2 Four studies did not report the exact age of study population; 3 Three studies did not appropriately specified the sexes; 4 Some studies included patients of different BMI categorizations; 5 Two studies did only report the weight; 6 Seven studies did not appropriately specified the diabetes status; 7 Some studies included different types of surgery; 8 BIB, DJB, LGB, Mini Gastric bypass, Jejunoileostomy.