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Table 4 Obstetrical outcomes of the 3763 study participants (linear mixed model)

From: Evaluation of the vaginal flora in pregnant women receiving opioid maintenance therapy: a matched case-control study

Variable

OMT group

Control group

Total

Mean differencea (95 % CI)

p-value

Mean ± SD

Mean ± SD

Mean ± SD

Birth weight (grams)

2946 ± 550

3245 ± 656

3234 ± 655

−165.3 (−283.6 to −46.9)

0.006

Gestational age (weeks)

38.6 ± 2.5

38.7 ± 2.7

38.7 ± 2.7

−0.05 (−0.45 to 0.54)

0.849

Apgar score

Apgar at 1 minute

8.5 ± 1.2

8.6 ± 1.1

8.6 ± 1.1

−0.03 (−0.24 to 0.17)

0.743

Apgar at 5 minutes

9.5 ± 1.3

9.6 ± 1.1

9.6 ± 1.1

−0.12 (−0.32 to 0.09)

0.264

Apgar at 10 minutes

9.7 ± 0.9

9.7 ± 1.1

9.7 ± 1.1

−0.04 (−0.23 to 0.16)

0.721

Umbilical cord arterial pH (units)

7.27 ± 0.07

7.27 ± 0.08

7.27 ± 0.08

−0.001 (−0.01 to 0.01)

0.854

Head circumference (cm)

33.6 ± 1.8

34.3 ± 2.1

34.3 ± 2.1

−0.38 (−0.77 to 0.01)

0.054

Length (cm)

49.2 ± 3.0

50.7 ± 3.8

50.7 ± 3.8

−0.87 (−1.58 to −0.17)

0.015

  1. SD standard deviation, CI confidence interval, cm centimetres
  2. acontrol group = reference