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. 2016 Jul 11;16:153. doi: 10.1186/s12884-016-0946-4

Table 2.

Water and urine arsenic levels in cases and controls

Arsenic μg/L	Controls (n = 202)	Cases (n = 104)		P-value
Water	40.49 (16.40)^a	39.58 (26.43)^a		0.816^b
Urine	6.78 (3.48)^a	7.1 (5.74)^a		0.428^c
		Mild PE n = 13	Severe PE/eclampsia n = 91	P-value
Water		46.03 (20.65)^a	38.62 (26.87)^a	0.519^b
Urine		7.82 (6.87)^a	7.03 (5.67)^a	0.788^c

^a Mean ± Standard deviation

^b Independent sample T test

^c Mann–Whitney U test