Table 1.
Sample Characteristics
| Nonsmokers (n = 16) | Smokers (n = 37) | |||
|---|---|---|---|---|
| Follicular (n = 8) | Luteal (n = 8) | Follicular (n = 17) | Luteal (n = 20) | |
| Age (years) | 28.9 (4.1) | 34.8 (4.1) | 28.4 (2.8) | 34.5 (2.6) |
| Body mass index | 24.4 (1.3) | 23.2 (1.3) | 23.4 (0.9) | 24.9 (0.8) |
| Education (years)a,* | 15.9 (0.9) | 15.9 (0.9) | 13.9 (0.7) | 14.4 (0.6) |
| Sleep (average hours) | 7.3 (0.3) | 6.8 (0.3) | 7.3 (0.2) | 7.0 (0.2) |
| Cortisol first sample (nmol/L)b | 1.9 (0.2) | 1.6 (0.2) | 2.1 (0.2) | 2.0 (0.1) |
| Mood disturbancec | 12.9 (11.0) | 17.3 (11.0) | 30.5 (7.5) | 27.6 (7.0) |
| Perceived stressd | 18.1 (2.0) | 17.4 (2.0) | 20.6 (1.4) | 19.9 (1.3) |
| Cigarettes (per day) | n/a | n/a | 15.6 (1.5) | 17.6 (1.3) |
| Duration (years)a,* | n/a | n/a | 5.0 (1.9) | 11.7 (1.7) |
| Nicotine dependencee | n/a | n/a | 5.0 (0.5) | 5.1 (0.5) |
| Cotinine (ng/mL) | n/a | n/a | 171.2 (47.6) | 169.4 (43.2) |
| CO (ppm) | n/a | n/a | 22.2 (3.7) | 26.8 (3.5) |
Entries show mean and standard deviation of the mean. CO, carbon monoxide.
aThere was a significant main effect of smoking group.
bLog transformation was applied to cortisol levels.
cThis was assessed by the Profile Of Mood State Questionnaire.
dThis was assessed by the Perceived Stress Scale.
eThis was assessed by the Fagerström Test of Nicotine Dependence.
*p < .05.