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Psychological Stress and Skin Symptoms in College Students: Results of a Cross-sectional Web-based Questionnaire Study.

OR and 95% confidence intervals were calculated to conclude as to whether the low stress group had a lower probability of having (skin-) complaints than the high stress group. Due to the fact that sex was not equally distributed in the groups, sex and stress severity were used as a covariate in the binary logistic regressions which were subsequently conducted using the skin symptoms as dependent variables. This made it possible to report OR and 95% confidence intervals (CI) adjusted for sex.