Effect of a single high dose vitamin A supplementation on the hemoglobin status of children aged 6–59 months: propensity score matched retrospective cohort study based on the data of Ethiopian Demographic and Health Survey 2011

Table 4 The association between VAS and anemia among children aged 6–59 months across three household wealth strata, Ethiopia, 2010

Wealth tertiles	Number of matched children^♦	RR (95% CI) in VA supplemented group	McNemar’s χ²test
Poor	331	0.74 (0.61-0.90)*	χ² = 9.48, P = 0.002*
Middle	311	0.86 (0.74-1.00)	χ² = 3.55, P = 0.059
Rich	329	0.96 (0.82-1.12)	χ² = 0.32, P = 0.630

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