Table 2.

Study medication exposure during pregnancy and the risk of prematurity by sub-categories of prematurity.

Characteristics	Prematurity < 37 completed weeks of gestation n = 15,688
	Extreme prematurity < 28 weeks of gestation		Moderate prematurity 28–31 weeks of gestation		Near-term prematurity 32–36 weeks of gestation
	n (%)
	Yes n = 653	No n = 233,247	Yes n = 1291	No n = 232,609	Yes	No
Study medication exposure
DHEa	1 (0.15)	77 (0.00)	0 (0.00)	78 (0.01)	18 (0.01)	60 (0.00)
Triptansb	2 (0.31)	524 (0.22)	3 (0.23)	523 (0.22)	56 (0.41)	470 (0.21)

^aDihydroergotamine; ^bIncluding almotriptan, eletriptan, naratriptan, rizatriptan, sumatriptan, and zolmitriptan.