Trends in UV irradiance of tanning devices in Norway: 1983-2005.

摘要: Indoor tanning increases skin cancer risk, but the importance of different parts UV spectrum is unclear. We assessed irradiance devices in Norway for period 1983-2005. Since 1983, all models needed approval before being sold or used. Type 3 limits were valid from late 1992 (<0.15 W m(-2) CIE-weighted, i.e. erythemally weighted, short and long wave irradiances). analyzed data 90% approved (n = 446 models) two large inspection surveys 1998/1999 2003 1,341 devices). Mean CIE-weighted increased 0.050 (95% confidence interval [CI] 0.045-0.055) 1983-1992 to 0.101 CI 0.098-0.105) 1993-2005, mean 0.091 0.088-0.095) 0.112 0.109-0.115), respectively. Inspection revealed irradiances much higher than that approved. In 1998-1999, only 28% (293/1034) equipped with correct sunlamps 1 out 130 inspected establishments fulfilled requirements. 2003, corresponding numbers 59% (180/307) 2 52 establishments. 1.5 3.5 times, respectively, natural summer sun Oslo. conclusion, has indoor over last 20 years. Due high throughout this period, percentage was lower sun.