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. 2013 Oct;59(10):e462-e469.

Table 6.

Substance use in pregnancy

SUBSTANCE SITE, N (%)
TOTAL COHORT, N (%) P VALUE FOR DIFFERENCE BETWEEN SITES
TORONTO VANCOUVER (N = 36) MONTREAL (N = 22)
At first visit*
  • Alcohol 15 (34) 7 (19) 4 (18) 26 (25) .220
  • Nicotine 35 (80) 34 (94) 20 (91) 89 (87) .142
  • Cocaine or crack 14 (32) 27 (75) 4 (18) 45 (44) < .001
  • Heroin 7 (16) 29 (81) 11 (50) 47 (46) < .001
  • Marijuana 14 (32) 3 (8) 4 (18) 21 (21) .034
  • Benzodiazepines 15 (34) 6 (17) 4 (18) 25 (25) .145
  • Prescription opioids 21 (48) 4 (11) 3 (14) 28 (27) < .001
At delivery
  • Alcohol 1 (3) 2 (6) 2 (9) 5 (5) .635
  • Nicotine 23 (64) 30 (83) 19 (86) 72 (77) .070
  • Cocaine or crack 4 (11) 10 (28) 4 (18) 18 (19) .184
  • Heroin 1 (3) 8 (22) 6 (27) 15 (16) .010
  • Marijuana 4 (11) 2 (6) 1 (4) 7 (7) .687
  • Benzodiazepines 4 (11) 16 (44) 5 (23) 25 (27) .005
  • Prescription opioids 4 (11) 2 (6) 3 (14) 9 (10) .560
*

N = 44 for the Toronto cohort and N = 102 for the total cohort.

Indicates significant difference at P < .05.

N = 36 for the Toronto cohort and N = 94 for the total cohort.