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Table 1 Anal cancer RR (95% CI) for HIV+ MSM and HIV+ non-MSM compared with HIV- controls (reference) and national US SEER rates.

From: Risk of anal cancer in HIV-infected patients and HIV-uninfected controls in North America

  RR (MSM) RR (non-MSM) SIR (MSM) SIR (non-MSM)
1996 to 1998 97.7 (12.3-774.3) 12.0 (0.7-195.5) 63.5 (29.0-120.6) 10.2 (0.3-56.9)
1999 to 2002 114.7 (35.3-372.8) 35.2 (9.8-126.5) 117.3 (84.5-158.5) 26.4 (11.4-52.0)
2003 to 2007 48.1 (23.6-98.2) 19.7 (8.8-44.1) 77.7 (59.3-100.0) 26.4 (14.8-43.5)