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Table 2 Independent risk factors for major postpartum haemorrhage (≥1000mls) after vaginal delivery in term nulliparous women

From: Maternal obesity and postpartum haemorrhage after vaginal and caesarean delivery among nulliparous women at term: a retrospective cohort study

Risk factor

Adjusted OR’s*

BMI ≥ 30.0

2.11 (1.54-2.89)

Ethnicity

 

 Pacific island

2.30 (1.62-3.27)

 Asian

1.64 (1.22-2.20)

Antepartum haemorrhage†

1.91 (1.25-2.91)

Pre-eclampsia

1.97 (1.22-3.19)

Induction of labour

1.46 (1.15-1.86)

Third stage of labour > 15min‡

1.62 (1.18-2.22)

Retained placenta

4.88 (3.08-7.73)

Episiotomy

1.94 (1.19-3.19)

3rd or 4th degree tear

5.09 (2.91-8.89)

Birthweight (g) ↑ 500g

1.39 (1.22-1.59)

  1. Data are adjusted odds ratio (95% confidence interval).
  2. * Adjusted for all variables in Table 1 plus duration of 1st, 2nd and 3rd stages of labour and perineal trauma (including graze, second degree tear).
  3. †from any cause excluding placenta praevia >20wk gestation.
  4. ‡ compared with third stage 5–10 minutes.
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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