Clinical Study

Mode of Delivery in Drug-Dependent Pregnant Women: A Case Control Study

Table 4

Factors that influence the mode of delivery in drug-dependent patients.

Vaginal delivery
()
Cesarean section
()
Odds ratio (95% CI) value

Maternal characteristics
Maternal age (years)28.13 (5.28)29.39 (5.86)0.297
Body mass index (Kg/m2)21.82 (3.85)22.04 (3.28)0.452
Ethnicity0.889 (0.097–8.157)0.917
 Caucasian189 (97.9)42 (97.7)
 Non-Caucasian4 (2.1)1 (2.3)
Nulliparous84 (43.5)25 (58.1)1.802 (0.923–3.520)0.082
Previous cesarean section13 (6.7)9 (20.9)3.665 (1.453–9.248)0.008
Previous vaginal delivery97 (50.3)9 (20.9)0.262 (0.119–0.576)<0.001
Pattern of consumption
State of consumption0.646 (0.325–1.281)0.209
 Active135 (70.3)26 (60.5)
 Nonactive57 (29.7)17 (39.5)
Type of drug
 Only opioids71 (36.8)22 (51.2)1.800 (0.925–3.503)0.081
 Only cocaine3 (1.6)1 (2.3)1.508 (0.153–14.857)0.555
 Only cannabinoids15 (7.8)1 (2.3)0.283 (0.036–2.199)0.317
 Mixed104 (53.9)19 (44.2)0.677 (0.348–1.317)0.350
Route of administration
 Intravenous33 (17.2)8 (18.6)1.101 (0.469–2.589)0.825
 Smoked91 (47.4)22 (51.2)1.163 (0.600–2.253)0.655
 Mixed17 (77.3)5 (22.7)1.354 (0.471–3.898)0.566
Substitution maintenance therapy
 Methadone128 (66.3)28 (65.1)0.948 (0.473–1.898)0.880
 Buprenorphine13 (6.7)5 (11.6)1.822 (0.613–5.414)0.336
 Naltrexone4 (2.1)1 (2.3)1.125 (0.123–10.324)1.000
 None48 (24.9)9 (20.9)0.800 (0.358–1.787)0.585
Infectious diseases
Hepatitis C91 (47.2)27 (62.8)1.891 (0.958–3.733)0.064
Hepatitis B4 (2.1)2 (4.7)2.305 (0.408–13.009)0.300
Syphilis4 (2.1)2 (4.7)2.305 (0.408–13.009)0.300
Associated addictions
Smoking history148 (82.2)32 (78)0.769 (0.334–1.767)0.535
Alcohol use12 (6.8)3 (7.5)1,115 (0.299–4.150)0.871
Pregnancy data
Delayed prenatal care123 (63.7)29 (67.4)1.179 (0.584–2.379)0.646
Placental abnormalities02 (4.7)0.175 (0.133–0.231)0.033
Hypertensive complications5 (2.6)2 (4.7)1.834 (0.344–9.785)0.614
Fetal growth restriction39 (20.2)9 (20.9)1.045 (0.463–2.360)0.915
Labor characteristics
Gestational age (weeks)37.98 (1.56)37.86 (1.73)0.895
Fetal presentation25.313 (7.839–81.734)<0.001
 Cephalic189 (97.9)28 (65.1)
 Noncephalic4 (2.1)15 (34.9)
Induction of labor49 (25.8)9 (20.9)0.762 (0.341–1.701)0.506
Newborn birth weight (g)2781.99 (508.96)2719.30 (541.49)0.786

Values are mean (standard deviation) for continuous variables or (%) for categorical variables.