Table 4.

Hepatitis B vaccination status by volunteer age group.

Age group, years	N	Vaccinated			Not vaccinated
		n	%	95% CI	n	%	95% CI
1–17	113	93	82.3*	74.2–88.2	20	17.7#	11.8–25.8
1–5	11	9	81.8*	52.3–94.9	2	18.2#	5.1–47.7
6–11	40	30	75.0*	59.8–85.8	10	25.0#	14.2–40.2
12–17	62	54	87.1*	76.6–93.3	8	12.9#	6.7–23.4
18–29	222	147	66.2*	59.8–72.1	75	33.8#	27.9–40.2
30–39	440	159	36.1	31.8–40.7	281	63.9	59.3–68.2
40–49	626	169	27.0	23.7–30.6	457	73.0	69.4–76.3
50–59	431	108	25.1	21.2–29.4	323	74.9	70.6–78.8
60–69	299	26	8.7#	6.0–12.4	273	91.3*	87.6–94.0
70+	176	9	5.1#	2.7–9.4	167	94.9*	90.6–97.3
Total	2,307	711	30.8	29.0–32.7	1,596	69.2	67.3–71.0

^*Significantly higher than the total value. ^#Significantly lower than the total value; p < 0.05 for all comparisons.