Table 1.
Characteristics of participants
| Characteristics | PMS group (n=86) |
Non-PMS group (n=203) |
|---|---|---|
| Age (years) | 16.5±1.0 | 16.4±1.1 |
| BMI (kg/m2) | ||
| Underweight | 26 (30.2) | 67 (33.0) |
| Normal | 50 (58.1) | 108 (53.2) |
| Overweight | 6 (7.0) | 15 (7.4) |
| Obese | 4 (4.7) | 13 (6.4) |
| Education | ||
| Grade 10 | 28 (32.6) | 90 (44.3) |
| Grade 11 | 32 (37.2) | 36 (17.7) |
| Grade 12 | 26 (30.2) | 77 (37.9) |
| Exercise | ||
| Adequate (≥3 times/week) | 32 (37.2) | 67 (33.0) |
| Inadequate (<3 times/week) | 54 (62.8) | 136 (67.0) |
| Coffee consumption | ||
| Yes | 29 (33.7) | 66 (32.5) |
| No | 57 (66.3) | 137 (67.5) |
| Alcohol consumption | ||
| Yes | 4 (4.7) | 12 (5.9) |
| No | 82 (95.3) | 191 (94.1) |
| Cigarette smoking | ||
| Yes | 0 (0) | 0 (0) |
| No | 86 (100.0) | 203 (100.0) |
| Menstruation | ||
| Menarche (year) | 12.3±1.1 | 12.3±1.1 |
| Dysmenorrhea | ||
| Present | 65 (75.6) | 153 (75.4) |
| Absent | 21 (24.4) | 50 (24.6) |
Note: Data are presented as numbers (percentage) or mean ± SD.
Abbreviations: BMI, body mass index; PMS, premenstrual syndrome.