Table 2.

Prevalence of hepatitis at different levels of ALT elevation compared to population prevalence, n, % (95% CI)

	ALT 30–50 IU/l, n = 250	ALT 50–70 IU/l, n = 250	ALT 70–100 IU/l, n = 250	Population prevalence
Hepatitis C — once infected, n % (95% CI)	0 0.0 (0.0 to 1.8)	5 2.0 (0.7 to 4.7)	3 1.2 (0.2 to 3.6)	0.2
Hepatitis C — chronic infection, n % (95% CI)	0 0.0 (0.0 to 1.8)	4 1.6 (0.5 to 4.2)	3 1.2 (0.2 to 3.6)	0.1
Hepatitis B — chronic infection, n % (95% CI)	0 0.0 (0.0 to 1.8)	0 0.0 (0.0 to 1.8)	1 0.4 (0.0 to 2.5)	0.4

ALT = alanine aminotransferase test.