Table 1.
Baseline study participant characteristics.
| Characteristic | Control group, n=21a | Intervention group, n=21a | P value | |
| Demographics | ||||
|
|
Age (years), mean (SD) | 30.43 (6.02) | 31.67 (4.90) | .47 |
|
|
Body mass index, mean (SD) | 23.09 (5.57) | 23.77 (5.08) | .68 |
|
|
High school or less education, n (%) | 14 (67) | 16 (76) | .50 |
| Smoking and quitting behavior | ||||
|
|
Cessation attempts, mean (SD) | 0.67 (0.66) | 0.95 (1.16) | .33 |
|
|
Previous carboxymetries, mean (SD) | 15.33 (7.91) | 18.00 (7.04) | .26 |
|
|
Age at which they started smoking, mean (SD) | 15.43 (1.69) | 14.52 (4.08) | .35 |
|
|
Days from “D-day” to delivery, mean (SD) | 138.81 (59.76) | 152.33 (46.99) | .42 |
|
|
Smoking couple, n (%) | 16 (76) | 17 (81) | .70 |
|
|
Carbon monoxide at the beginning of study, mean (SD) | 16.82 (11.19) | 16.26 (8.65) | .87 |
|
|
Moderate-to-high dependence, n (%) | 9 (42.9) | 6 (28.6) | .33 |
| Weekly cigarette consumption, mean (SD) | ||||
|
|
Before pregnancy | 20.60 (10.72) | 19.12 (5.86) | .63 |
|
|
When pregnant | 8.57 (6.32) | 7.62 (3.54) | .55 |
| Obstetric history | ||||
|
|
Previous pregnancies, mean (SD) | 1.24 (1.09) | 1.00 (1.10) | .48 |
|
|
Pregnancy weeks, mean (SD) | 37.57 (4.85) | 38.52 (1.86) | .41 |
|
|
Frist trimester of pregnancy, n (%) | 10 (48) | 12 (57) | .54 |
| Type of delivery, n (%) | ||||
|
|
Eutocic | 13 (62) | 10 (48) | .35 |
|
|
Dystocic | 2 (10) | 3 (14) | .35 |
|
|
Caesarean | 5 (24) | 8 (38) | .50 |
|
|
Abortion | 1 (5) | 0 | >.99 |
aOne case excluded as it was lost to follow-up.