Table 3a

Optimality Index NL-2015 for women with low-risk pregnancies by their planned place of birth at start of labour

Planned place of birthNulliparousMultiparous
nMean (SD)Adj. B (95% CI)†nMean (SD)Adj. B (95% CI)†
Birth centre93925.8 (2.68)Reference72928.1 (2.17)Reference
Hospital (midwife led)34826.0 (2.71)0.40 (0.05 to 0.74)*35328.0 (2.14)−0.05 (−0.31 to 0.21)
Home39926.3 (2.80)0.53 (0.19 to 0.86)**68728.8 (1.70)0.85 (0.63 to 1.07)***
Birth centre by location
  Freestanding3327.4 (2.60)1.69 (0.75 to 2.62)**3228.6 (1.60)0.75 (−0.05 to 1.54)
 Alongside69925.7 (2.66)Reference50327.9 (2.24)Reference
 On-site20725.8 (2.67)0.08 (−0.35 to 0.52)19428.4 (2.03)0.48 (0.10 to 0.84)*
Birth centre by integration profile
 MOBC52225.7 (2.67)−0.29 (−0.72 to 0.15)40127.9 (2.30)−0.55 (−0.95 to –0.15)**
 MIBC19825.7 (2.75)−0.32 (−0.84 to 0.20)15128.0 (2.08)−0.09 (−0.57 to 0.39)
 MUBC21926.0 (2.64)Reference17728.5 (1.85)Reference
  • *P<0.05; **P<0.01; ***P<0.001

  • †Adjusted for maternal age, ethnicity, urbanisation and social economic status.

  • MIBC, birth centre with a mixed profile; MOBC, monodisciplinary-oriented birth centre; MUBC, multidisciplinary-oriented birth centre.