Effectiveness of hepatitis B virus vaccination program in Egypt: Multicenter national project

Table 3 Univariate and multivariate logistic analysis to determine predictors for risk of non sero-protection n (%)

Variable	Non-seroprotection rate	Crude odds ratio (95%CI)	AOR (95%CI)
Age in years
< 5	152 (13.6)	®	®
5 to < 10	256 (34.7)	3.4 (2.7-4.2)b	3.3 (2.5-4.2)b
10 to < 15	606 (59.1)	9.1 (7.4-11.3)b	9.1 (7.3-11.2)b
≥ 15	571 (69.5)	14.5 (11.5-18.1)b	14.2 (11.3-17.9)b
Gender
Boys	681 (39.2)	®	®
Girls	854 (46.2)	1.3 (1.2-1.5)b	1.1 (1.0-1.4)b

Variables entered in model: Age group, gender, socio-economic levels and history of rheumatic fever, diabetes mellitus, surgical operation, regular medical injection, blood transfusion, hospital admission, open abscess.

^bP < 0.01. AOR: Adjusted odds ratio;

^®: Reference group.