Table 4.

Median cumulative dose (total mg) of FA purchased by mothers for the 12-month period before birth, by calendar year for those that purchased, and excluding outliers, n=465 109

Time period	Parity	N	Median (IQR)	P value
2000–2005	Nulliparous	94 144	90 (40.5–210)	<0.001
	1	53 284	75 (33–180)
	2	12 502	63 (30–150)
	≥3	3810	60 (30–147)
2006–2016	Nulliparous	105 520	135 (60–270)	<0.001
	1	95 913	96 (42–210)
	2	57 997	90 (36–192)
	≥3	41 939	75 (36–168)