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Table 2 Unadjusted and adjusted relative risks for obstetric intervention in women with private versus public health care coverage, Ireland, 2005–2010

From: Private health care coverage and increased risk of obstetric intervention

  Unadjusted Adjusted
RR (95% CI) RR (95% CI)
Induction of labour a   
Total induction 1.25 (1.24–1.26) 1.27 (1.26–1.29)
  Prostaglandin 1.16 (1.13–1.19) 1.18 (1.14–1.20)
  Oxytocin 1.06 (1.02–1.10) 1.10 (1.05–1.13)
  Artificial rupture of membrane 1.28 (1.24–1.32) 1.25 (1.22–1.29)
  Otherb 1.36 (1.34–1.38) 1.41 (1.38–1.44)
Mode of delivery   
Elective caesareanc,d 1.88 (1.85–1.91) 1.48 (1.45–1.51)
Emergency caesareand 1.18 (1.16–1.20) 1.13 (1.12–1.16)
Vaginal, operative, totale 1.33 (1.32–1.35) 1.25 (1.22–1.27)
  Vacuume 1.27 (1.25–1.29) 1.19 (1.17–1.22)
  Forcepse 1.57 (1.52–1.62) 1.39 (1.34–1.45)
Select procedures   
Episiotomyf 1.41 (1.39–1.43) 1.40 (1.38–1.43)
  1. Note: All risk estimates are based on emergency caesarean or vaginal (operative and non-operative) deliveries (n = 355,428) unless otherwise stated.
  2. aAdjusted for age, heart disease, diabetes, placental disorders, previous caesarean delivery.
  3. bIncludes medical and surgical methods not elsewhere specified.
  4. cBased on all deliveries (n = 403,642).
  5. dAdjusted for age, heart disease, diabetes, placental disorders, previous caesarean delivery and multiple birth.
  6. eAdjusted for age, heart disease, diabetes, previous caesarean delivery, multiple birth, induction of labour and epidural. The interaction term between induction of labour and epidural was also included in the model.
  7. fBased on vaginal deliveries only (N = 300,597); adjusted for age, multiple birth and operative vaginal delivery.