CONSORT 2010 flow diagram for cluster trials.
* Intervention arm: n = 33 midwives returned ≥1 questionnaire: n = 32 pre-intervention, n = 15 post-intervention, n = 14 both ** Control arm: n = 35 midwives returned ≥1 questionnaire: n = 34 pre-intervention, n = 34 post-intervention, n = 33 both.