Table 1 Baseline characteristics of participants by the study groups
From: Internet-based cognitive-behavioral therapy for premenstrual syndrome: a randomized controlled trial
Variable | Intervention (n = 46) | Control (n = 46) | P-value* |
|---|---|---|---|
Age (years) | 22.1 (2.7) | 22.3 (2.5) | 0.748 |
Menarche age (years) | 12.9 (1.2) | 13.0 (1.3) | 0.680 |
PMS Score (assessed by PSST) | 32.6 (6.8) | 31.5 (6.4) | 0.444 |
Depression score (assessed by Beck) | 9.4 (6.9) | 8.9 (7.2) | 0.757 |
Body mass index (kg/m2) | 22.1 (2.5) | 21.6 (2.5) | 0.319 |
Marital status (married) | 5 (11%) | 4 (9%) | 0.726 |
Educational grade (master and above) | 14 (30%) | 16 (35%) | 0.656 |
Family history of PMS (yes) | 34 (74%) | 29 (63%) | 0.262 |
Regular exercise (yes) | 10 (22%) | 10 (22%) | 1.000 |
Sufficiency of family income | Â | Â | Â |
 Totally | 15 (33%) | 21 (46%) |  |
 To some extent | 28 (61%) | 23 (50%) | 0.430 |
 Not at all | 3 (6%) | 2 (4%) |  |