Table 2.

Logistic regression between birth registration and undernutrition rates; data from Multiple Indicator Cluster Surveys and Demographic and Health Surveys in thirty-three sub-Saharan African countries

	Single effect		Cumulative effect
	df	Resid. dev.	df	Resid. dev.	P value
Stunting
BR	1	0·331	163	2·007	<2·2×10–16***
Country	32	1·583	131	0·424	<2·2×10–16***
BR×country	32	0·209	99	0·216	2·71×10–8***
Underweight
BR	1	0·095	158	1·186	<2·2×10–16***
Country	31	1·054	127	0·133	<2·2×10–16***
BR×country	31	0·058	96	0·075	1·67×10–5***
Wasting
BR	1	0·003	158	0·352	6·81×10–6***
Country	31	0·325	127	0·027	<2·2×10–16***
BR×country	31	0·012	96	0·014	2·55×10–6***

Resid. dev., residual deviance; BR, birth registration rate (B); BR×country, interaction between BR rate and country (B×C).

***P<0·001.