Table 2.
Changes in the measurements during the trial period
| Yogurt group (n = 479) | Control group (n = 482) | p value* | |||
|---|---|---|---|---|---|
| Baseline | 16 weeks | Baseline | 16 weeks | ||
| PSQI score | 5.50 (2.71) | 5.03 (2.68) | 5.33 (2.60) | 5.22 (2.68) | 0.007 |
| SF-8 score | |||||
| PF (physical functioning) | 50.6 (4.5) | 51.0 (4.9) | 50.2 (5.1) | 50.2 (5.0) | 0.23 |
| RP (role physical) | 50.1 (5.1) | 50.4 (4.9) | 49.8 (5.2) | 49.8 (5.4) | 0.58 |
| BP (bodily pain) | 49.3 (8.5) | 50.7 (8.3) | 49.6 (8.5) | 50.3 (8.4) | 0.18 |
| GH (general health) | 49.2 (6.2) | 50.1 (6.5) | 49.1 (6.5) | 48.9 (6.7) | 0.02 |
| VT (vitality) | 49.6 (5.7) | 50.5 (6.2) | 49.4 (6.0) | 49.2 (6.1) | 0.01 |
| SF (social functioning) | 48.6 (7.2) | 49.4 (6.9) | 48.9 (7.3) | 48.7 (7.5) | 0.06 |
| RE (role emotional) | 48.7 (5.9) | 49.4 (5.6) | 49.1 (5.6) | 49.2 (6.0) | 0.17 |
| MH (mental health) | 47.0 (6.9) | 47.9 (6.7) | 47.2 (6.5) | 47.7 (7.1) | 0.27 |
| PCS (physical component summary) | 49.8 (5.8) | 50.4 (5.7) | 49.5 (5.9) | 49.5 (6.1) | 0.15 |
| MCS (mental component summary) | 46.6 (6.9) | 47.4 (6.7) | 47.0 (6.5) | 47.1 (7.2) | 0.12 |
| GSRS | |||||
| Total† | 1.58 (0.54) | 1.59 (0.56) | 1.58 (0.58) | 1.60 (0.54) | 0.70 |
| Reflux of acid† | 1.23 (0.85, 1.79) | 1.24 (0.85, 1.81) | 1.23 (0.84, 1.78) | 1.25 (0.86, 1.82) | 0.54 |
| Gastric pain† | 1.33 (0.89, 1.99) | 1.33 (0.90, 1.95) | 1.30 (0.88, 1.92) | 1.32 (0.91, 1.93) | 0.55 |
| Indigestion† | 1.48 (1.02, 2.16) | 1.47 (1.00, 2.16) | 1.50 (1.03, 2.18) | 1.46 (1.01, 2.12) | 0.52 |
| Diarrhea† | 1.32 (0.88, 1.99) | 1.37 (0.92, 2.04) | 1.29 (0.89, 1.87) | 1.31 (0.90, 1.91) | 0.50 |
| Constipation† | 1.74 (1.09, 2.80) | 1.72 (1.04, 2.83) | 1.76 (1.06, 2.93) | 1.84 (1.09, 3.11) | 0.03 |
Values are expressed as mean. Standard deviation (− 1SD, + 1SD) is indicated in parentheses
PSQI, Pittsburgh Sleep Quality Index; GSRS, Gastrointestinal Symptom Rating Scale
*Two-way analysis of variance with repeated measures
†Geometric mean values