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Table 6 Sensitivity analyses for the 50 infants with unknown HIV status

From: Pregnancy loss and role of infant HIV status on perinatal mortality among HIV-infected women

MTCT No. Neonatal morality Early mortality
   Mortality Rate (n) Crude HR (95% CI) Adjusted HR(95% CI)e Mortality Rate (n) Crude HR (95% CI) Adjusted HR(95% CI)f
Model 1 a        
IU 64 0.050 (3) 1.09 (0.34–3.50) 0.97 (0.30–3.18) 0.137 (8) 2.26 (1.08–4.73) 1.65 (0.77–3.50)
IP/ePP 64 0.016 (1) 0.35 (0.05–2.51) 0.39 (0.05–2.85) 0.048 (3) 0.78 (0.25–2.50) 1.11 (0.35–3.58)
NI at least for 42 days 1004 0.044 (43) 1.0   0.059 (56) 1.0  
Model 2 b        
IU 114 0.268 (26) 14.82 (8.25–26.60) 12.03 (6.45–22.42) 0.347 (32) 12.65 (7.73–20.72) 8.15 (4.83–13.74)
IP/ePP 64 0.016 (1) 0.73 (0.10–5.40) 0.73 (0.10–5.47) 0.048 (3) 1.34 (0.41–4.39) 1.70 (0.52–5.58)
NI at least for 42 days 954 0.022 (20) 1.0   0.035 (32) 1.0  
Model 3 c        
IU 64 0.050 (3) 2.28 (0.68–7.68) 1.88 (0.55–6.43) 0.137 (8) 3.89 (1.79–8.44) 2.70 (1.23–5.91)
IP/ePP 114 0.238 (24) 13.15 (7.25–23.84) 11.65 (6.23–21.79) 0.275 (27) 9.92 (5.93–16.58) 9.61 (5.58–16.54)
NI at least for 42 days 954 0.022 (20) 1.0   0.035 (32) 1.0  
Model 4 d        
IU 67 0.080 (5) 1.94 (0.77–4.93) 1.66 (0.65–4.29) 0.164 (10) 2.98 (1.52–5.87) 2.09 (1.05–4.17)
IP/ePP 67 0.045 (3) 1.13 (0.35–3.65) 0.82 (0.20–3.41) 0.076 (5) 1.39 (0.56–3.48) 1.55 (0.56–4.32)
NI at least for 42 days 998 0.040 (39) 1.0   0.055 (52) 1.0  
  1. a Assume all of the 50 infants as NI at least for 42 days.
  2. b Assume all of the 50 infants infected by IU transmission.
  3. c Assume all of the 50 infants infected by IP/ePP transmission.
  4. d HIV status of the 50 infants was imputed based on the predicted probability of HIV transmission.
  5. e Adjusted for stopping breastfeeding, LBW, and preterm birth.
  6. f Adjusted for stopping breastfeeding, LBW, and 2+ children (5–16 aged).