Table 2b. Crude prevalence of PBC (per million population) according to age and gender in 2015.

Age (years)	Women	Men	Total	Incidence rate ratio (95% CI)
20–39	75.3	8.8	10.9	Reference
40–59	148.3	23.9	92.2	8.45 (5.50–13.0)
60–79	508.5	89.3	300.2	27.50 (18.06–41.90)
≥80	353.2	108.6	257.7	23.60 (14.89–37.41)
Overall	238.2	37.8	109.0	—

CI, confidence interval; PBC, primary biliary cholangitis.