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Table 4 Continuation rate and recurrence risk of perinatal death by characteristics at the first pregnancy

From: Recurrence of perinatal death in Northern Tanzania: a registry based cohort study

  Perinatal death in a subsequent pregnancy
Characteristic at first birth Survival of first baby Continuation rate* Number at risk Perinatal deaths (n) Risk (%) RR 95% CI p difference of RRs
Preeclampsia
  Yes Per. death 0.27 35 7 20 1.8 0.8 – 3.9 0.20
  No per. death 0.17 136 15 11.0    
  No Per. death 0.32 307 24 7.8 3.1 2.1 – 4.7  
  No per. death 0.24 4,025 100 2.5    
LBW
  Yes Per. death 0.32 160 22 13.8 1.3 0.8 – 1.9 0.02
  No per. death 0.25 531 56 10.5    
  No Per. death 0.31 182 9 4.9 3.2 1.6 – 6.1  
  No per. death 0.19 3,620 59 1.6    
Preterm birth
  Yes Per. death 0.32 126 17 13.5 1.3 0.8- 2.1 0.01
  No per. death 0.23 484 48 9.9    
  No Per. death 0.33 216 14 6.5 3.9 2.2 - 7.0  
  No per. death 0.19 3,677 67 1.8    
C/section
  Yes Per. death 0.33 120 11 9.2 2.5 1.4 – 4.6 0.30
  No per. death 0.20 1,331 48 3.6    
  No Per. death 0.31 222 20 9.0 3.8 2.4 – 6.1  
  No per. death 0.19 2,830 67 2.4    
Induced labour
  Yes Per. death 0.37 165 12 10.3 2.2 1.2 – 3.9 0.07
  No per. death 0.25 1,628 54 3.3    
  No Per. death 0.27 177 19 10.7 4.4 2.7– 7.1  
  No per. death 0.17 2,533 61 2.4    
ANC visits
  >= 5 Per. death 0.41 90 5 5.6 3.4 2.4 – 4.9 0.25
  No per. death 0.23 1,784 45 2.5    
  <5 Per. death 0.29 252 26 10.3 6.7 1.9 – 7.6  
  No per. death 0.17 2,377 70 2.9    
Infections
  Yes Per. death 0.32 129 13 10.1 4.5 2.6 – 7.7 0.17
  No per. death 0.20 1,776 40 2.6    
  No Per. death 0.31 213 18 8.5 2.7 1.6 – 4.4  
  No per. death 0.18 2,385 75 3.1    
  1. *Proportion of women with a second birth.
  2. †RR: adjusted relative risk adjusted for maternal age and education attainment.
  3. ‡CI: confidence interval from log-binomial models accounting for correlation between successive deliveries of the same mother.