Table 2a. Average age/sex-adjusted annual Incidence rate of PBC (per million person-years) according to age and gender between 2000 and 2015.

Age (years)	Women	Men	Total	Incidence rate ratio (95% CI)
20–39	1.1	0.8	2.1	Reference
40–59	17.1	3.4	10.1	4.82 (3.39–6.86)
60–79	33.6	10.7	22.2	10.61 (7.47–15.09)
≥80	31.5	15.7	25.9	12.40 (8.12–18.92)
Overall	12.8	3.8	8.4	—

CI, confidence interval; PBC, primary biliary cholangitis.