Table 3.

The estimated increase in risk for melanoma associated with five minute typical sessions or increasing typical sessions by five minutes (the RO5) for occasional and frequent female sunbed/sunlamp users. Adjusted estimates are adjusted for average UVR flux, hours outdoors, tan type, DN, and number of painful adult burns.

	median years of use	median session time	RO5*	(95% CI)
Occasional users
Adjusted	1 yr	10 min.	+3%	(−14%, +23%)
Unadjusted			+2%	(−13%, +19%)
Frequent users
Adjusted	4 yrs	20 min.	+19%	(+2%, +38%)
Unadjusted			+12%	(−3%, +28%)

^*(exp(5*parameter estimate) – 1)*100.