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Table 1 Sample distribution

From: Age-related changes in gut microbiota composition from newborn to centenarian: a cross-sectional study

Group Age Number of samples (Male/Female)
Segmentation (Mean ± SD)
1 Preweaning (0.3 ± 0.1) 14 (7/7)
2 Weaning (0.8 ± 0.4) 12 (6/6)
3 Weaned-3 years old (2.4 ± 0.6) 18 (10/8)
4 4–9 years old (6.1 ± 1.9) 14 (6/8)
10 10–19 years old (14.1 ± 3.6) 10 (7/3)
20 20–29 years old (25.9 ± 2.7) 40 (16/24)
30 30–39 years old (33.9 ± 2.3) 88 (45/43)
40 40–49 years old (43.8 ± 3.1) 34 (13/21)
50 50–59 years old (53.3 ± 2.6) 25 (12/13)
60 60–69 years old (63 ± 2.7) 28 (11/17)
70 70–79 years old (76.8 ± 2.1) 15 (5/10)
80 80–89 years old (83.3 ± 2.4) 48 (16/32)
90 90–99 years old (94.2 ± 2.7) 19 (4/15)
100 Over 100 years old (101.3 ± 1.8) 6 (0/6)
  Sum   371 (158/213)
  1. The mean (± SD) age of the entire cohort was 44.3 ± 28.6 years
  2. Gut microbiota were analyzed for one sample per subject, except for two samples from one boy and one girl at preweaning and weaning and three samples from one girl at preweaning, weaning and 5 years of age