Table 2

Pregnancy characteristics and use of substances by study cohort

CHARACTERISTICSBCWH ROOMING IN N = 32 N (%)BCWH HISTORICAL (NOT ROOMING IN) N = 38 N (%)SURREY HOSPITAL (NOT ROOMING IN) N = 36 N (%)
Smoking
 • None7 (21.9)9 (23.7))5 (13.9)
 • <1 pack/d14 (43.8)11 (28.9)15 (41.7)
 • ≥1 pack/d10 (31.3)9 (23.7)15 (41.7)
 • Smoked, amount unknown1 (3.1)9 (23.7)1 (2.8)
Alcohol consumption6 (18.8)17 (44.7)10 (27.8)
Drug use
 • Heroin32 (98.3)35 (92.1)32 (88.9)
 • Methadone (before hospital admission)6 (18.8)8 (21.1)18 (50.0)
 • Other opioid8 (25.0)8 (21.1)16 (44.4)
 • Cannabis4 (12.5)6 (15.8)15 (41.7)
 • Cocaine15 (46.9)30 (78.9)16 (72.2)
 • Crack11 (39.3)16 (48.5)10 (29.4)
 • Benzodiazepine4 (12.5)2 (5.3)3 (8.3)
 • Other (crystal meth, ecstasy)2 (6.3)02 (5.6)
Daily methadone dose at delivery (mg)
 • 07 (21.9)16 (42.1)19 (52.8)
 • 1–293 (9.4)7 (18.4)3 (8.3)
 • 30–5910 (31.3)8 (21.1)5 (13.9)
 • 60–895 (15.6)5 (13.2)3 (8.3)
 • >907 (21.9)2 (5.3)6 (16.7)
Gravidy
 • 16 (18.8)5 (13.5)5 (13.9)
 • 25 (15.6)8 (21.6)9 (25.0)
 • 33 (9.4)4 (10.8)8 (22.2)
 • 45 (15.6)10 (27.6)5 (13.9)
 • 5 or more13 (40.6)10 (27.0)9 (25.0)
Nulliparous6 (18.7)6 (15.8)5 (13.9)
Antenatal admission to hospital20 (62.5)22 (57.9)4 (11.1)
Breastfeeding20 (2.5)3 (7.9)4 (11.1)
MEAN (SD)MEAN (SD)MEAN (SD)
Gestational age at first prenatal visit18.7 (7.0)20.2 (9.7)22.3 (8.7)
No. of prenatal visits12.2 (8.0)8.8 (7.8)5 (4.1)
  • BCWH—British Columbia Women’s Hospital, SD—standard deviation