Table 3 Correlations among zinc, copper, and birth weight

From: Zinc and copper levels in low birth weight deliveries in Medani Hospital, Sudan

Variables	Maternal zinc		Maternal copper		Cord zinc		Cord copper
Variables	r	P	r	P	r	P	r	P
Birth weight	0.27	0.005	0.19	0.05	0.35	0.01	0.1	0.23
Maternal zinc			0.39	< 0.001	0.29	0.003	0.13	0.16
Maternal copper	0.39	< 0.001			0.18	0.07	0.04	0.63
Cord zinc	0.29	0.003					0.004	0.96

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