Data analysisMeans, standard deviation (SD), and absolute andrelative frequencies were calculated for descriptivestatistical analysis. Differences in each homeenvironmental risk factor before and after interventionwere compared. To calculate the effect of theintervention, the Wilcoxon pair test was used.A p-value < 0.05 was considered to be significant.The statistical analysis was performed using the Statav. 10 (College Station, TX: StataCorp LP).