Table 2.

Standardized incidence ratio of anal squamous cell carcinoma in people living with HIV in Australia from 1982 to 2012, by calendar period and by age at cancer diagnosis.

	Observed cases	Expected cases	SIR	95% CI
Time period
1982–1995	11	0.26	43.02	21.47–76.97
1996–1999	9	0.27	33.77	15.44–64.11
2000–2004	24	0.72	33.35	21.37–49.62
2005–2008	31	0.98	31.73	21.56–45.04
2009–2012	54	1.43	37.70	28.32–49.19
Age
16–29	2	0.0071	198.10	33.93–1012.02
30–44	42	0.62	68.29	49.22–92.31
45–59	62	1.94	31.97	24.51–40.99
≥60	23	1.09	21.10	13.38–31.67
Overall	129	3.65	35.33	29.50–41.98

CI, confidence interval; SIR, standardized incidence ratio.