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Table 3 Univariate analysis of the association of Bacteroidetes and Firmicutes with BMI levels by gender

From: Correlation of intestinal microbiota with overweight and obesity in Kazakh school children

Variables

Total

Normal group

Overweight group

Obesity group

P-values

Total

(n = 175)

(n = 91)

(n = 62)

(n = 22)

 

Bacteroidetes × 107copies/μL

1.31 ± 1.94

1.5 ± 2.2

1.37 ± 1.77

0.33 ± 0.47

0.002*

Firmicutes × 107copies/μL

2.58 ± 4.52

2.43 ± 4.53

2.05 ± 3.01

4.7 ± 7.01

0.628

Bact/Firm

0.98 ± 0.71

1.06 ± 0.62

1.03 ± 0.82

0.48 ± 0.52†‡

<0.001*

Boy

(n = 87)

(n = 45)

(n = 30)

(n = 12)

 

Bacteroidetes × 107copies/μL

1.02 ± 1.53

1.00 ± 1.42a

1.30 ± 1.86

0.41 ± 0.56

0.218

Firmicutes × 107copies/μL

1.99 ± 3.38

1.71 ± 3.32a

1.57 ± 2.04

4.12 ± 5.36

0.170

Bact/Firm

1.06 ± 0.81

1.15 ± 0.72

1.12 ± 0.97

0.59 ± 0.59

0.066

Girl

(n = 88)

(n = 46)

(n = 32)

(n = 10)

 

Bacteroidetes × 107copies/μL

1.59 ± 2.26

1.99 ± 2.69

1.43 ± 1.70

0.23 ± 0.32†‡

0.002*

Firmicutes × 107copies/μL

3.17 ± 5.37

3.14 ± 5.41

2.50 ± 3.68

5.39 ± 8.87

0.725

Bact/Firm

0.90 ± 0.58

0.98 ± 0.51

0.94 ± 0.66

0.36 ± 0.43†‡

0.003*

  1. Data were presented as mean ± SD; Differences among three groups were compared using Kruskal-Wallis test and between two groups were compared using the Mann–Whitney U test because data were not normally distributed.
  2. *P < 0.05, indicated significant differences among three groups.
  3. †,‡P < 0.0167, indicated significant differences as compared with the normal and overweight groups.
  4. aP < 0.05, indicated significant differences between boys and girls in normal group. No significant difference between boys and girls were found either in overweight group or in obesity group.