Table 2.
Descriptive measures of influential genera expressed as a percentage of total gut bacteria counts pre and post intervention in young women, by treatment group.
| Measure | T1 M | (SD) | T2 M | (SD) | ∆M | (SD) | |
|---|---|---|---|---|---|---|---|
| GOS n = 21 | |||||||
| Aestuariispira | −3.30 | (1.54) | −2.77 | (2.35) | 0.54 | (1.82) | ↑ |
| Bacteroides | 5.69 | (1.13) | 5.49 | (1.53) | −0.20 | (0.71) | ↓ |
| Barnesiella | 1.23 | (2.39) | 1.82 | (2.25) | 0.59 | (1.51) | ↑ |
| Bifidobacterium | 3.82 | (1.96) | 4.62 | (1.37) | 0.80 **B | (1.28) | ↑ |
| Desulfovibrio | −1.45 | (2.30) | −1.30 | (2.57) | 0.15 | (0.87) | ↑ |
| Gardnerella | −3.83 | (0.65) | −3.64 | (0.75) | 0.18 | (0.59) | ↑ |
| Peptoniphilus | −3.32 | (1.10) | −3.36 | (1.21) | −0.04 | (1.41) | ↓ |
| Sporobacter | 0.11 | (1.75) | 0.48 | (1.72) | 0.37 | (1.15) | ↑ |
| Placebo n = 23 | |||||||
| Aestuariispira | −3.30 | (2.04) | −3.59 | (1.26) | −0.32 | (1.40) | ↓ |
| Bacteroides | 5.11 | (1.15) | 5.30 | (1.23) | 0.24 | (0.59) | ↑ |
| Barnesiella | 1.59 | (2.06) | 1.19 | (2.17) | −0.32 *B | (1.58) | ↓ |
| Bifidobacterium | 3.93 | (1.88) | 4.14 | (2.18) | 0.01 | (2.05) | ↑ |
| Desulfovibrio | −1.72 | (2.44) | −2.34 | (2.25) | −0.56 | (2.00) | ↓ |
| Gardnerella | −3.73 | (1.15) | −2.97 | (1.59) | 0.75 **B | (1.03) | ↑ |
| Peptoniphilus | −3.24 | (1.47) | −2.50 | (1.63) | 0.70 | (1.90) | ↑ |
| Sporobacter | 0.48 | (1.72) | 0.23 | (2.11) | −0.17 | (0.89) | ↓ |
Note. Average (mean, M) abundance of significant bacteria as a percentage of total gut bacteria composition (%) at T1 and T2, and difference (T2 minus T1) with standard deviations (SD) presented for each group separately. Significance tests evaluating the change across time were calculated and are denoted by asterisks; * p < 0.05, ** p < 0.01. Letters denote paired sample test used; B significance value from Wilcoxon signed rank test for non-gaussian response distributions, identified by significant Shapiro-Wilk test of normality across groups. GOS = galacto-oliogosaccharides. Arrows are illustrative indications of change direction ↑ increase, ↓ decrease.