Time elapsed from diagnosis was positively correlated with time spent outside each day both during weekdays (r = 0.194, p = 0.02) and during the weekend (r = 0.217, p = 0.009), as well as with sun exposure for the purpose of tanning. The main increase in time spent outside occurred after three years from the time of diagnosis (Fig 3).
Time elapsed from end of treatment was negatively correlated (r = -0.21, p = 0.023) with staying in the shade but not with any of the other sun-protection habits (Fig 4).