Average Quality-of-Life Score for Participants per Group on Representative Days
| Baseline | Day 3 | Day 9 | Day 14 | Day 30 | |
|---|---|---|---|---|---|
| Placebo (SD) | 18.62 (16.11) | 12.07 (12.59) | 5.35 (9.67) | 4.00 (8.57) | 3.79 (8.23) |
| Vitamin C (SD) | 21.41 (14.52) | 13.83 (12.22) | 6.84 (8.09) | 6.04 (8.11) | 6.40 (14.39) |
| Melatonin (SD) | 23.53 (14.92) | 20.96 (16.14) | 8.05 (12.61) | 5.00 (11.48) | 2.55 (4.20) |
Note: Higher scores indicate more or more severe total symptoms.
Abbreviations: SD, standard deviation.