TABLE 2

APC for Anatomic Site of Melanoma and UV-B Exposure by Gender, From 1973 Through 2009

CategoryMaleFemale
nAPCa,b (95% CI)nAPC (95% CI)
All sites4831.9% (1.1 to 2.6)*7472.2% (1.4 to 3.1)*
 C44.3: Skin of other/unspecified parts of face375.2% (1.3 to 9.2)*463.4% (–1.9 to 9.0)
 C44.5: Skin of trunkc1742.6% (0.9 to 4.4)*1126.2% (–0.3 to 13.2)d
1500.9% (–3.2 to 5.3)e
 C44.7: Skin of lower limb and hip761.0% (–1.8 to 3.9)1973.2% (1.8 to 4.7)*
UV-B exposure
 Low2583.0% (1.1 to 5.0)*4303.7% (2.5 to 5.0)*
 High2230.4% (–0.2 to 1.0)3170.1% (–2.3 to 2.6)
  • All data are 1973–2009 except as noted.

  • a APCs analyzed using 5-y intervals due to small numbers (1973–1977, 1978–1982, 1983–1987, 1988–1992, 1993–1997, 1998–2002, 2003–2009).

  • b APC was calculated via weighted least-squares regression.

  • c Best fit model contained 1 joinpoint. APC (0 joinpoint), 3.0%; 95% CI, 1.2–4.8 (significant).

  • d Years 1973–1990.

  • e Years 1990–2009.

  • * Indicates statistical significance at the .05 level.