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Table 3 Comparisons of complications and outcomes between LDA and control groups

From: Low-dose aspirin for primary prevention of adverse pregnancy outcomes in twin pregnancies: an observational cohort study based on propensity score matching

 

LDA (N = 235)

Control (N = 235)

RR (95% CI)

Hypertensive disorders

26 (11.1)

40 (17.0)

0.65 (0.41–1.03)

Gestational hypertension

15 (6.38)

17 (7.23)

0.88 (0.45–1.73)

PE

11 (4.68)

23 (9.79)

0.48 (0.24–0.95)

DC

9

17

–

MC

2

6

–

PE < 34 weeks

0

1

–

PE < 37 weeks

7

18

0.39 (0.17–0.91)

PE ≥ 37 weeks

4

5

0.80 (0.22–2.94)

Neonatal weight (mean)

2550 (2280–2780)

2415 (2120–2650)

–

SGA

55 (23.40)

74 (31.49)

0.74 (0.55–1.00)

DC

31

37

–

MC

24

37

–

sSGAa

45/225 (20.0)

62/223 (27.80)

0.72 (0.51–1.01)

Gestational week(d)

259.0 (252.0–263.0)

254.0 (243.0–260.0)

–

Preterm birthb

18 (7.66)

36 (15.32)

0.50 (0.29–0.86)

Spontaneous

15 (6.38)

32 (13.62)

0.47 (0.26–0.84)

DC

6

13

–

MC

9

19

–

Iatrogenic

3 (1.28)

4 (1.70)

0.75 (0.17–3.31)

Bleeding amount

505.66 ± 300.96

524.57 ± 445.61

–

Hemorrhage

8 (3.40)

9 (3.83)

0.89 (0.35–2.26)

  1. a Excluded both of twins were growth restricted (10 cases in the LDA group, 12 cases in the Control group)
  2. b Gestational weeks less than 34