Table 3. Output of the log-binomial regression analysis on the association between LBW and Prenatal zinc and retinol statuses in rural Sidama, Southern Ethiopia, Jan–Oct 2011.

Variables	Birthweight		Crude RR	Adjusted RR
	Low	Normal
Vitamin A status
Normal	48	299	1r	1r
Deficient	47	181	1.49 (1.03–2.15)*	1.25 (0.86–1.82)
Zinc status
Normal	34	225	1r	1r
Deficient	61	255	1.47 (1.01–2.16)*	1.27 (0.86–1.87)
Zinc-VA interaction
Normal zinc and Normal VA	20	155	1r	1r
Zinc deficient and VA normal	28	144	1.42 (0.84–2.43)	1.30 (0.72–2.31)
VA deficient and zinc normal	14	70	1.46 (0.78–2.74)	1.31 (0.66–2.61)
Zinc deficient and VA deficient	33	111	2.01 (1.20–3.34)*	1.76 (1.00–3.11)