MOESM1 of Use of skincare products and risk of cancer of the breast and endometrium: a prospective cohort study

Additional file 1. Hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between skincare product use and risk of cancer. Skincare product use modelled in continuous scale using restricted cubic spline transformations of “% skin covered in cream per day” with 4 knots.