Table 4 Association of iron supplementation with preeclampsia and gestational diabetes in both groups (cases and controls) separately

Condition	Controls			Cases
	Iron supplementation		p Value	Iron supplementation		p Value
	Yes n (%)	No n (%)	p Value	Yes n (%)	No n (%)	p Value
Preeclampsia
Yes	29 (3.4)	7 (9.9)	0.016	48 (17.2)	14 (34.2)	0.018
No	830 (96.6)	64 (90.1)		231 (82.8)	27 (65.9)
Gestational diabetes
Yes	36 (4.2)	5 (7.0)	0.233	17 (6.1)	3 (7.3)	0.730
No	823 (95.8)	66 (93.0)		262 (93.9)	38 (92.7)

Information was missed in two cases and four controls.