Table 1.
Baseline characteristics of participants.
| Vitamin C Group (n = 70) |
Placebo Group (n = 71) |
P value | |
|---|---|---|---|
| Sex, n | 0.559† | ||
| Male (%) | 31 (44.3) | 28 (39.4) | |
| Female (%) | 39 (55.7) | 43 (60.6) | |
| Age, years (SD) | 30.4 (5.7) | 31.2 (5.8) | 0.427‡ |
| BMI, kg/m2 (SD) | 21.5 (3.0) | 21.8 (3.1) | 0.683‡ |
| Usual fatigue, n | 0.971† | ||
| Yes (%) | 59 (84.3) | 60 (84.5) | |
| No (%) | 11 (15.7) | 11 (15.5) | |
| Smoking status, n | 0.158† | ||
| Smoker (%) | 21 (30.0) | 14 (19.7) | |
| Nonsmoker (%) | 49 (70.0) | 57 (80.3) | |
| Drinking status, n | 0.448† | ||
| Drinker (%) | 56 (80.0) | 53 (74.6) | |
| Nondrinker (%) | 14 (20.0) | 18 (25.4) | |
| Exercise, n | 0.495† | ||
| Regular (%) | 19 (27.1) | 23 (32.4) | |
| Irregular (%) | 51 (72.9) | 48 (67.6) | |
| Sleeping hours (SD) | 6.5 (1.0) | 6.4 (0.9) | 0.296‡ |
†p value from Chi-square test, ‡p value from independent t test, BMI: body mass index