Iron deficiency and thyroid dysfunction among sudanese women in first trimester of pregnancy: a cross-sectional study

Table 3 Correlation between serum ferritin, thyroid functions, maternal age and gestational age

Variable	Serum ferritin		Thyroid-stimulating hormone		Free triiodothyronine		Maternal age		Gestational age
Variable	r	p	r	p	r	p	r	p	r	p
Free thyroxin	0.173	0.052	-0.077	0.387	0.003	0.973	-0.095	0.286	0.168	0.069
Serum ferritin			0.080	0.368	-0.225	0.011*	0.077	0.392	0.158	0.068
Thyroid-stimulating hormone					0.131	0.143	-0.117	0.189	0.044	0.627
Free triiodothyronine							-0.095	0.286	0.147	0.099
Maternal age									0.004	0.967

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