Table 1. Relationship between age and immunization status.

Variable	Non-immune	Relatively immune	Immune	p-value
Age groups				0.021
20–29 (n = 104)	4.8% (n = 5)	18.2% (n = 19)	77% (n = 80)
30–39 (n = 54)	18.5% (n = 10)	20.4% (n = 11)	61.1% (n = 33)
40–49 (n = 65)	23.1% (n = 15)	16.9% (n = 11)	60.0% (n = 39)
50–59 (n = 7)	0.0% (n = 0)	0.0% (n = 0)	100% (n = 7)
Vaccination on schedule				0.008
Yes (n = 122)	6.6% (n = 8)	18.8% (n = 23)	74.6% (n = 91)
No (n = 108)	20.4% (n = 22)	16.7% (n = 18)	63% (n = 68)
Occupation				0.005
Dental students (n = 109)	6.4% (n = 7)	17.4% (n = 19)	76.2% (n = 83)
Professors (n = 13)	0 (n = 0)	23.1% (n = 3)	76.9% (n = 10)
Clinical ssistants (n = 61)	14.8% (n = 9)	18% (n = 11)	67.2% (n = 41)
Non-clinical staff (n = 47)	29.8% (n = 14)	17.0% (n = 8)	53.2% (n = 25)