Table 4.
Association of Reported Smoking Information With Likelihood of Live Birth in PPCOS II
| Variable | Live Birth | No Live Birth | P Value |
|---|---|---|---|
| n | 171 | 539 | |
| Female | |||
| Ever smoking | 76 (44.4) | 227 (42.1) | .592 |
| Current smokinga | 9 (5.3) | 96 (17.8) | <.001 |
| Cigarettes per day | .575 | ||
| 1–10 | 66 (38.6) | 190 (35.3) | |
| 11–20 | 8 (4.7) | 34 (6.3) | |
| 21–40 | 2 (1.2) | 2 (0.4) | |
| >40 | 0 (0.0) | 1 (0.2) | |
| Duration of smoking, y | .102 | ||
| <1 | 23 (13.5) | 46 (8.5) | |
| 1–5 | 33 (19.3) | 79 (14.7) | |
| 6–10 | 14 (8.2) | 67 (12.4) | |
| 11–15 | 4 (2.3) | 24 (4.5) | |
| >15 | 2 (1.2) | 11 (2.0) | |
| Time since quitting, y | .086 | ||
| <1 | 12 (17.9) | 37 (28.2) | |
| 1–5 | 23 (34.3) | 50 (38.2) | |
| 6–10 | 25 (37.3) | 29 (22.1) | |
| 11–15 | 4 (6.0) | 13 (9.9) | |
| >15 | 3 (4.5) | 2 (1.5) | |
| Male | |||
| Ever smoking | 77 (45.0) | 291 (54.0) | .041 |
| Current smokinga | 27 (35.1) | 146 (50.2) | .018 |
| Cigarettes per day | |||
| 1–10 | 53 (31.4) | 185 (34.7) | .248 |
| 11–20 | 18 (10.7) | 81 (15.2) | |
| 21–40 | 4 (2.4) | 17 (3.2) | |
| >40 | 0 (0.0) | 2 (0.4) | |
| Duration of smoking, y | |||
| <1 | 14 (8.3) | 63 (11.8) | .241 |
| 1–5 | 25 (14.8) | 71 (13.3) | |
| 6–10 | 18 (10.7) | 69 (13.0) | |
| 11–15 | 11 (6.5) | 57 (10.7) | |
| >15 | 7 (4.1) | 24 (4.5) | |
| Time since quitting, y | |||
| <1 | 21 (43.8) | 49 (35.5) | .148 |
| 1–5 | 7 (14.6) | 11 (8.0) | |
| 6–10 | 10 (20.8) | 41 (29.7) | |
| 11–15 | 0 (0.0) | 10 (7.2) | |
| >15 | 21 (43.8) | 49 (35.5) | .148 |
Values are median (interquartile range) or n (%). P values for χ2 or t test.
a
Denominator for current smoking and current alcohol is among subset who indicated “ever.”