Table 1.

Concentration of antibody to Hepatitis B surface antigen (Anti-HBs) after 3 doses of hepatitis B vaccine among assisted living facility residents by demographic characteristics—Virginia, 2010.

Characteristic	Total sample N (%)	Anti-HBs ≥10 mIU/mL n (%)	p-Valuea	Anti-HBs GMC
				Mean GMC	95% CI
Total	27	22 (81.5%)	–	91.7	35.2–239.2
Age
46–59	12 (44.4%)	10 (83.3%)	Ref	105.3	21.5–516.4
60–74	12 (44.4%)	9 (75.0%)	0.6	74.3	13.4–411.4
≥75	3 (11.1%)	3 (100.0%)	1.0	122.5	b
Sex
Male	17 (63.0%)	13 (76.5%)	Ref	55.3	16.5–185.5
Female	10 (37.0%)	9 (90.0%)	0.4	217.1	38.9–1213.0
Race
White	14 (51.9%)	12 (85.7%)	Ref	150.7	35.9–632.5
Black	13 (48.1%)	10 (76.9%)	0.6	53.7	13.1–219.8

^aFisher’s exact.

^bInsufficient sample size.