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Table 4 Small for gestational age overall and for HIV + ve only

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

All women

      
    

Bivariate

Multivariable vi

 

Variable

Normal for GA i: n (% ii)

Small for GA iii: n (%)

p-value iv

0R v (95 % CI)

0R (95 % CI)

Adj. p-value

Year

      

 2011

4053 (92.77)

316 (7.23)

0.066

1 (ref)

1 (ref)

 

 2014

5027 (91.77)

451 (8.23)

1.15 (0.99–1.34)

1.21 (1.02–1.44)

0.032

Age Category

      

  < 18

755 (91.29)

72 (8.71)

0.106

1 (ref)

1 (ref)

 

 18–24

4032 (92.56)

324 (7.44)

0.84 (0.65–1.1)

0.82 (0.63–1.08)

0.161

 25–34

3384 (92.41)

278 (7.59)

0.86 (0.66–1.13)

0.81 (0.61–1.07)

0.137

  > 34

807 (90.37)

86 (9.63)

1.12 (0.8–1.55)

1.06 (0.75–1.48)

0.750

Mode of Delivery

      

 Vaginal

6180 (92.46)

504 (7.54)

0.300

1 (ref)

1 (ref)

 

 Emergency Caesarean

1340 (91.97)

117 (8.03)

1.07 (0.87–1.32)

1.21 (0.95–1.53)

0.124

 Planned Caesarean

1543 (91.36)

146 (8.64)

1.16 (0.96–1.41)

1.11 (0.91–1.35)

0.288

HIV

      

 Negative

5487 (92.75)

429 (7.25)

<0.001

1 (ref)

1 (ref)

 

 Positive

3417 (91.78)

306 (8.22)

1.15 (0.98–1.33)

1.15 (0.98–1.35)

0.078

 Unbooked

171 (85.5)

29 (14.5)

2.17 (1.45–3.25)

2.28 (1.5–3.45)

<0.001

HIV + ve women only

      
    

Bivariate

Multivariable iv

 

Variable

Normal for GA: n (% ii)

Small for GA: n (%)

p-value

0R (95 % CI)

0R (95 % CI)

Adj. p-value

Year

      

 2011

1491 (92.15)

127 (7.85)

0.471

1 (ref)

1 (ref)

 

 2014

1926 (91.5)

179 (8.5)

1.09 (0.86–1.38)

1.53 (0.51–4.61)

0.447

Age Category

      

  < 18

84 (90.32)

9 (9.68)

0.048

1 (ref)

1 (ref)

 

 18–24

1110 (93.36)

79 (6.64)

0.66 (0.32–1.37)

0.67 (0.14–3.16)

0.609

 25–34

1741 (91.49)

162 (8.51)

0.87 (0.43–1.76)

0.80 (0.17–3.75)

0.778

  > 34

451 (89.48)

53 (10.52)

1.10 (0.52–2.31)

1.27 (0.26–6.28)

0.771

Mode of Delivery

      

 Vaginal

2282 (92.35)

189 (7.65)

0.176

1 (ref)

1 (ref)

 

 Emergency Caesarean

509 (90.41)

54 (9.59)

1.28 (0.93–1.76)

1.64 (0.98–2.74)

0.059

 Planned Caesarean

616 (90.72)

63 (9.28)

1.23 (0.92–1.66)

0.82 (0.40–1.68)

0.584

CD4 category

      

  > 500

312 (91.5)

29 (8.5)

0.583

1 (ref)

1 (ref)

 

 351–500

321 (93.59)

22 (6.41)

0.74 (0.41–1.31)

0.72 (0.40–1.29)

0.267

 201–350

307 (90.83)

31 (9.17)

1.09 (0.64–1.85)

1.20 (0.69–2.09)

0.520

  < 200

161 (91.48)

15 (8.52)

1.00 (0.52–1.92)

0.94 (0.45–1.94)

0.862

ART regimen

      

 Nil ARVs

133 (89.86)

15 (10.14)

0.464

1 (ref)

1 (ref)

 

 AZT/NVP i, ii

901 (92.51)

73 (7.49)

0.72 (0.40–1.29)

0.37 (0.10–1.45)

0.153

 D4T/3TC/NVP iii

824 (90.85)

83 (9.15)

0.89 (0.50–1.59)

0.29 (0.08–1.07)

0.063

 EFV/TDF/FTC

1533 (92.02)

133 (7.98)

0.77 (0.44–1.35)

0.25 (0.07–0.87)

0.030

  1. i Gestational Age (GA), ii row percentage, iii below 10th percentile, iv Chi-square, v Odds Ratio, vi following variables were adjusted for in the multivariable adjusted model, year age group, mode of delivery, HIV status
  2. i AZT/NVP vs D4T/3TC/NVP p-value = 0.410, ii AZT/NVP vs FTC p-value = 0.521, iii D4T/3TC/NVP vs FTC p-value = 0.800, iv following variables were adjusted for in the multivariable adjusted model, year age group, mode of delivery, HIV status, CD4 (HIV positive mothers only), ART regimen (HIV positive mothers only)