Table 5. Multivariate logistic regression analysis of risk factors associated with acute parvovirus B19 infection among the sickle cell anemia (SCA) patients.

Risk factor	OR (95% CI)
Age below 12 years	9.28 (2.15-42.3)*
Frequency of hospitalization in the preceding 12 months
2	2.5 (0.27-19.2)
3+	15 (0.75-501)*
Unsteady SCA	6.15 (0.78-55.9)*
4 or more children per household	4.5 (0.81-22.2)*

OR: odd ratio. *P < 0.05.