Table 1 Characteristics of subjects
Mean (SD) | Range | |
|---|---|---|
Age (years) | 21.1 (1.7) | 197–25 |
Daily number of cigarettes smoked | 17.3 (5.2) | 10.5–30.0 |
Years of smoking | 3.6 (2.1) | 1–10 |
FTND score | 2.2 (2.1) | 0–7 |
Duration of menstrual cycle (days) | 30.5 (2.5) | 37–34 |
Duration of follicular phase (days) | 8.2 (2.1) | 6–9 |
Duration of luteal phase (days) | 12.6 (1.4) | 12–15 |