Fig. 1

Normalized weights of variables in ERSs. The violin plot shows the distribution of normalized weights of variables in the ERSs obtained through logistic ridge regression of the training split across the 200 bootstrap replications. 2ndsmoke: Secondhand smoking, exsmoker: Formerly smoking, packyr: cigarette pack-years, smoker: Currently smoking. mth-variable: mean of variable a month prior outcome evaluation, yr-variablename: mean of variable a year prior outcome evaluation.