71 Regional variations in childbirth interventions and their correlations Figure 2. Interregional variation in adjusted* odds ratio (OR) of number of: a. women in midwife-led care at time of birth b. actual home births c. episiotomy d. oxytocin postpartum among women in midwife-led care * Adjusted for parity, maternal age, ethnic background, socioeconomic position and urbanisation GR = Groningen; FR = Friesland; DR = Drenthe; OV = Overijssel FL = Flevoland; GD = Gelderland; UT = Utrecht; NH = Noord-Holland; ZH = Zuid-Holland; ZL = Zeeland; NB = Noord-Brabant; LB = Limburg. 3
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