Table 3 Multivariate analysis of smoking and birth weight of premature infants (n = 189)
From: Smoking during pregnancy and harm reduction in birth weight: a cross-sectional study
Variable | β | SE | p | CI (β; 95%) |
|---|---|---|---|---|
(Intercept) | − 3791.46 | 587.97 | 0.000 | (− 2639.07 to − 4943.86) |
Smoking in pregnancy | ||||
Yes, 11 to 40 cigarettes per day | − 340.03 | 191.32 | 0.076 | (−715.01 to 34.94) |
Yes, 6 to 10 cigarettes per day | 265.27 | 403.49 | 0.511 | (− 525.56 to 1056.16) |
Yes, 1 to 5 cigarettes per day | − 475.24 | 309.48 | 0.125 | (−1081.80 to 131.34) |
No | reference | |||
≥ 7 prenatal medical visits | ||||
Yes | 394.58 | 135.28 | 0.004 | (129.44 to 659.73) |
No | reference | |||
Participation in prenatal group | ||||
Yes | −27.69 | 147.23 | 0.851 | (− 316.25 to 260.86) |
No | reference | |||
Emotional problems | ||||
Yes | 103.30 | 197.31 | 0.601 | (− 283.81 to 490.41) |
No | reference | |||
High blood pressure/pre-eclampsia/ eclampsia/ HELLP syndromea | ||||
Yes | −23.82 | 198.03 | 0.904 | (− 411.95 to 364.32) |
No | reference | |||
Hemorrhage/bleeding/ threatened abortion | ||||
Yes | 342.39 | 211.14 | 0.105 | (−71.44 to 756.21) |
No | reference | |||
Infection | ||||
Yes | − 312.23 | 186.72 | 0.094 | (− 678.29 to 53.63) |
No | reference | |||
Gestational age (weeks) | 180.68 | 16.32 | < 0.001 | (148.68 to 212.67) |
Hyperemesis | ||||
Yes | − 307.98 | 261.78 | 0.239 | (− 821.06 to 205.11) |
No | reference | |||