Table 2.
Stool frequency score of 40 mildly constipated subjects treated with either placebo or prebiotics at baseline and 4 wk of intervention
| Time point | Placebo (n = 20) | Prebiotics (n = 20) | P value1 |
| Baseline | 2.47 ± 0.22 | 2.35 ± 0.18 | 0.667 |
| Week 4 | 4.11 ± 0.21 | 4.10 ± 0.25 | 0.174 |
| P value2 | 0.002 | < 0.001 | |
| Change of score | 1.55 ± 0.33 | 1.75 ± 0.22 | 0.620 |
1
Calculated using the Student’s t-test (between groups).
2
Calculated using paired t-test (within a group). Data are expressed as the mean ± standard error of the mean. Change in score was calculated by subtracting the values at week 4 from those at baseline.