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Table 1 Stillbirth outcome overall and for HIV + ve only

From: Improved pregnancy outcomes with increasing antiretroviral coverage in South Africa

All women

    

Bivariate

Multivariable iv

 

Variable

Live births: n (% i)

Stillbirths: n (%)

p-value ii

0R iii (95 % CI)

0R (95 % CI)

Adj. p-value

Year

      

 2011

4226 (96.73)

143 (3.27)

0.006

1 (ref)

1 (ref)

 

 2014

5349 (97.65)

129 (2.35)

0.71 (0.56–0.91)

0.74 (0.56–0.97)

0.03

Age Category

      

  < 18

812 (98.19)

15 (1.81)

0.045

1 (ref)

1 (ref)

 

 18–24

4248 (97.52)

108 (2.48)

1.38 (0.8–2.37)

1.37 (0.79–2.38)

0.26

 25–34

3544 (96.78)

118 (3.22)

1.8 (1.05–3.1)

1.86 (1.06–3.25)

0.03

  > 34

863 (96.64)

30 (3.36)

1.88 (1.01–3.52)

1.99 (1.04–3.81)

0.037

Mode of Delivery

      

 Vaginal

6480 (96.95)

204 (3.05)

0.006

1 (ref)

1 (ref)

 

 Emergency Caesarean

1420 (97.46)

37 (2.54)

0.83 (0.58–1.18)

0.71 (0.48–1.04)

0.08

 Planned Caesarean

1661 (98.34)

28 (1.66)

0.54 (0.36–0.8)

0.58 (0.39–0.88)

0.01

HIV

      

 Negative

5786 (97.8)

130 (2.2)

<0.001

1 (ref)

1 (ref)

 

 Positive

3607 (96.88)

116 (3.12)

1.43 (1.11–1.84)

1.26 (0.97–1.65)

0.088

 Unregistered Antenatal

175 (87.5)

25 (12.5)

6.36 (4.04–10.01)

6.1 (3.86–9.64)

<0.001

HIV + ve women only

    

Bivariate

Multivariable iv

 

Variable

Live births: n (%)

Stillbirths: n (%)

p-value

0R (95 % CI)

0R (95 % CI)

Adj. p-value

Year

      

 2011

1559 (96.35)

59 (3.65)

0.102

1 (ref)

1 (ref)

 

 2014

2048 (97.29)

57 (2.71)

0.74 (0.51–1.06)

0.52 (0.27–0.97)

0.041

Age Category

      

  < 18

89 (95.7)

4 (4.3)

0.018

1 (ref)

1 (ref)

 

 18–24

1167 (98.15)

22 (1.85)

0.42 (0.14–1.24)

0.79 (0.18–3.5)

0.759

 25–34

1830 (96.16)

73 (3.84)

0.89 (0.32–2.48)

1.71 (0.41–7.24)

0.463

  > 34

488 (96.83)

16 (3.17)

0.73 (0.24–2.23)

1.41 (0.31–6.4)

0.66

Mode of Delivery

      

 Vaginal

2385 (96.52)

86 (3.48)

0.093

1 (ref)

1 (ref)

 

 Emergency Caesarean

548 (97.34)

15 (2.66)

0.76 (0.44–1.32)

0.75 (0.4–1.39)

0.362

 Planned Caesarean

666 (98.09)

13 (1.91)

0.54 (0.3–0.98)

0.57 (0.31–1.06)

0.074

CD4 category

      

  > 500

333 (97.65)

8 (2.35)

0.047

1 (ref)

Excluded as co-linear with ART regimen

 351–500

341 (99.42)

2 (0.58)

0.24 (0.05–1.16)

 201–350

327 (96.75)

11 (3.25)

1.4 (0.56–3.53)

  < 200

169 (96.02)

7 (3.98)

1.72 (0.61–4.83)

ART regimen

      

 Nil ARVs

128 (86.49)

20 (13.51)

<0.001

1 (ref)

1 (ref)

 

 AZT/NVP

957 (98.25)

17 (1.75)

0.11 (0.06–0.22)

0.08 (0.04–0.16)

<0.001

 D4T/3TC/NVP

869 (95.81)

38 (4.19)

0.28 (0.16–0.5)

0.2 (0.11–0.38)

<0.001

 EFV/TDF/FTC

1629 (97.78)

37 (2.22)

0.15 (0.08–0.26)

0.18 (0.1–0.34)

<0.001

  1. i row percentage, ii Chi-square, iii Odds Ratio, iv following variables were adjusted for in the multivariable adjusted model, year age group, mode of delivery, pregnancy term category, HIV, status
  2. i AZT/NVP vs D4T/3TC/NVP p-value = 0.002, ii AZT/NVP vs FTC p-value = 0.041, iii D4T/3TC/NVP vs FTC p-value = 0.768, iv following variables were adjusted for in the multivariable adjusted model, year age group, mode of delivery, pregnancy term category, HIV status, CD4 (HIV positive mothers only), ART regimen (HIV positive mothers only)