Sunburn, sun exposure, and sun sensitivity in the Study of Nevi in Children.

ABSTRACT:

Purpose

To examine the joint effect of sun exposure and sunburn on nevus counts (on the natural logarithm scale; log nevi) and the role of sun sensitivity.

Methods

We describe an analysis of cross-sectional data from 443 children enrolled in the prospective Study of Nevi in Children. To evaluate the joint effect, we partitioned the sum of squares because of interaction between sunburn and sun exposure into orthogonal components representing (1) monotonic increase in log nevi with increasing sun exposure (rate of increase of log nevi depends on sunburn), and (2) nonmonotonic pattern.

Results

In unadjusted analyses, there was a marginally significant monotonic pattern of interaction (P = .08). In adjusted analyses, sun exposure was associated with higher log nevi among

SUBMITTER: Satagopan JM 

PROVIDER: S-EPMC4609579 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature