Table 1.
Characteristics of Premenstrual Syndrome Cases and Controls, University of Massachusetts Premenstrual Syndrome Study (2006–2014)
| Characteristic | PMS cases n = 78 | PMS controls n = 88 | p Value |
|---|---|---|---|
| Mean (SD) | Mean (SD) | ||
| Age (years) | 20.9 (2.5) | 20.9 (1.7) | 0.91 |
| Body mass index (kg/m2) | 23.0 (3.3) | 22.7 (3.1) | 0.50 |
| Age at menarche (years) | 12.2 (1.3) | 12.8 (1.5) | 0.01 |
| Physical activity (MET/week) | 47.1 (42.0) | 54.4 (44.2) | 0.28 |
| Alcohol intake (g/day) | 5.9 (6.2) | 6.1 (7.7) | 0.88 |
| % | % | ||
| White race | 73.1 | 84.1 | 0.08 |
| Ever smokinga | 18.1 | 8.0 | 0.05 |
| Current smoking | 9.1 | 4.6 | 0.24 |
| Current oral contraceptive use | 52.6 | 54.6 | 0.80 |
| Current antidepressant use | 0.0b | 1.1 | 0.35 |
| Multivitamin use | 37.2 | 46.6 | 0.22 |
a
Ever smoking category includes current and former smoking.
b
PMS case exclusion criterion.
PMS, premenstrual syndrome.