Table 2.

Detailed decomposition of Erreygers normalized concentration index.

Contributing factors		Marg. Effects	Elas.	Ck	% Contr.
Individual characteristics
Children’s age (ref: 6–23 months)
	24–42 months	−0.779*	−0.001	0.001	−0.31
	43–59 months	−1.150*	0.007	−0.008	4.36
Sex (ref: Men)
	Women	0.397*	0.001	0.001	−0.31
Mother’s age (ref: 15–24)
	25–34 years	−0.054	0.008	−0.000	0.24
	≥ 35 years	−0.088*	0.0256	−0.002	1.23
Health-related variables
Vaccination coverage (ref: Complete)
	Incomplete	−0.613*	0.012	−0.008	4.11
Place of delivery (ref: Institutional)
	Non-Institutional	0.003	−0.039	−0.000	0.08
Use of antiparasitic in the last 6 months (ref: No)
	Yes	−0.117*	−0.039	0.005	−2.52
Health insurance (ref: Yes)
	No	0.134	−0.022	−0.003	1.66
Household-related variables
Mother’s education level (ref: No education/primary)
	Secondary	−0.043	−0.037	0.002	−0.89
	Higher	−0.384*	0.126	−0.048	26.26
Exposure to media (ref: No)
	Yes	−0.189	0.053	−0.010	5.45
Source of drinking water (ref: Unsafe)
	Safe	0.137*	−0.067	−0.009	5.02
Community-related variables
Area of residency (ref: Urban)
	Rural	0.052	−0.160	−0.008	4.55
Region of origin (ref: Lima)
	Rest of the Coast	0.105*	0.033	0.003	−1.94
	Highlands	0.568*	−0.081	−0.046	24.91
	Jungle	0.295*	−0.062	−0.018	9.95
Sum of ECI				−0.148	81.85
Residual (unexplained)				−0.037	18.15
Erreygers-corrected concentration index				−0.184

^*indicates statistically significant (p < 0.05) marginal effect derived from multivariable probit regression model.

Elas., elasticity (β_k ^* x̅_k /μ); ECI, Erreygers´ concentration index; and C_k, Erreygers-corrected concentration index of determinant k.