Table 2. Overall (among underweight- and well-nourished- children altogether) correlations (Spearman’s-rho) between lactulose/mannitol (L:M) test.

Variable	Age	WHZ	HAZ	WAZ	MUAC	AGP	Hb	Zinc	Vitamin D	p Ferritin	p Retinol	P TfR
	n-925	n-925	n-925	n-925	n-922	n-867	n-758	n-976	n-835	n-816	n-799	n-868
Urinary lactulose recovery	-0.014	-0.025	0.019	-0.011	-0.028	0.146	-0.047	0.084	0.003	-0.128	0.020	0.103
	0.336	0.221	0.279	0.365	0.196	0.036	0.198	0.017	0.467	<0.001	0.288	0.001
Urinary mannitol recovery	0.071	0.045	0.065	0.073	0.070	-0.007	-0.046	0.013	-0.052	-0.091	0.124	0.054
	0.016	0.086	0.024	0.013	0.017	0.414	0.206	0.706	0.066	0.005	<0.001	0.054
L:M	-0.087	-0.060	-0.039	-0.077	-0.098	0.066	-0.070	0.062	0.056	-0.021	-0.105	0.053
	0.004	0.034	0.115	0.010	0.001	0.027	0.052	0.083	0.052	0.276	0.002	0.061

WLZ = weight-for-length z-score, LAZ = length-for-age z-score, WAZ = weight-for-age-z score, MUAC = mid upper arm circumference, AGP = α-1-acid glycoprotein, Hb = hemoglobin, p TfR = plasma-transferrin

First row of each variable is Spearman’s-rho; second row of each variable is the related p value