Vaccination against hepatitis b virus: are Italian medical students sufficiently protected after the public vaccination programme?

Table 2 Characteristics of the 2,899 vaccinated students stratified by age at vaccination

		Vaccinated in infancy	Vaccinated at age 12 years	p
No. of students		994	1,905
Age in years		21.8 ± 1.0	28.0 ± 4.5	0.000
Females		715 (72)	1,026 (54)	0.000
Place of birth:	Italy	987 (99.3)	1,881 (98.7)	n.s.
Place of birth:	Elsewhere	7 (0.7)	24 (1.3)
Attending:	School of medicine	56 (5.6)	839 (44)	0.000*
	Healthcare profession school	938 (94.4)	468 (24.6)
	Postgraduate medical school	0	598 (31.4)
Years since vaccination		22.1 ± 1.1	16.1 ± 3.1	0.000
Students with HBsAb <10IU/L		224 (22.6)	235 (12.3)	0.000
Students with HBsAb >10 IU/L		770 (77.4)	1670 (87.7)	0.000

*Healthcare professions school students vs. all medical school students (graduate + postgraduate)
Continuous variables are given as mean±SD; categorical variables are given as n° (%)

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