Six outcome variables showed significant intervention condition effects in mixed effects models : overall sun protection behavior ( P = 0.025 ) ; sunscreen use ( P = 0.026 ) ; use of sunglasses ( P = 0.011 ) ; sunburns in the past three months ( P = 0.033 ) ; recency of last skin self-exam ( P = 0.017 ) ; and frequency of skin exams by health care provider ( P = 0.016 ) .