Objective UVR exposure data during the intervention period by MELD randomization group.
DISEASE
In a post-hoc exploratory analysis, we examined the objective and SPF modified UVR exposure data among those in the intervention group. Most (75%) participants in the intervention group used the sunscreen feature at least once; those who did not were more likely to have stage 3 or 4 disease (24.4% vs. 8.1%, p = 0.007) but were otherwise similar in demographics. Both those who did and did not use the sunscreen feature reported similar minutes per day of exposure (median 160 vs. 151). Comparisons of the objective UVR exposure, however, found that those who reported using sunscreen within the app had greater objective UVR exposure than those who did not, which remained statistically significant even after adjusting for stage (e.g. average daily dose median 87 vs. 56 J/m2; 