Table 2.

Adjusted odds ratios for the variables associated with anemia retained by the logistic regression model^*

	CDC formula	Dirren and others formula
Variables in the model	Adjusted OR (95% CI)	Adjusted OR (95% CI)
Age (months)	1.01 (1.00–1.02)	1.1 (1.0–1.3)
Gender (female)	1.72 (0.94–3.14)	NIM
Fascioliasis	3.01 (1.10–8.23)	2.9 (1.0–8.7)
Model summary	Likelihood ratio 10.3, df 3, P = 0.01, Cox and Snell R2 = 0.05, 1-β = 0.79	Likelihood ratio 7.7, df 2, P = 0.02, Cox and Snell R2 = 0.03, 1-β = 0.72

^*Variables entered step 1: age, gender, place of residence, other parasite infections, fascioliasis, malnutrition, and stunting.

OR = odds ratio; CI = confidence interval; NIM = not in the model.