Participants' flow diagram chart. Up to 96.3% (2671/2775) of women assigned to treatment were included in the present study at baseline. Of those, 2094 women, 78.4% had a known congenitally normal singleton live birth and outcome analyses were performed on these pregnancies. The proportion of participants with GWG (χ2
2 = 0.64, P = 0.42), birthweight (χ2
2 = 0.03, P = 0.85), preterm birth (χ2
2 = 0.64, P = 0.51) and post‐natal visit data (χ2
2 = 0.71, P = 0.40) was similar between trial treatment groups.