SUPPLEMENTAL INFORMATION

Supplementary Table I. The characteristics of the included study participants and excluded study participants with incomplete records for smoking or covariates
Supplementary Table II. The characteristics of the study population including health behaviors and laboratory results
Supplementary Table III. Hazard ratios for psoriasis according to changes in smoking habits among individuals with sustained status of changes in smoking habit who underwent three consecutive health examinations
Supplementary Table IV. Hazard ratios for psoriasis according to changes in smoking habits among individuals whose smoking status remained the same at the time of psoriasis diagnosis or the end of follow-up
Supplementary Table V. Hazard ratios for psoriasis according to changes in smoking habits using a censor date set to December 31, 2019, for the follow-up observation
Supplementary Table VI. Hazard ratios for psoriasis according to changes in smoking habits among individuals with sustained status of changes in smoking habit who underwent three consecutive health examinations, using a censor date set to December 31, 2019, for the follow-up observation
Supplementary Fig 1. Health checkup questionnaire.
Supplementary Fig 2. Association of changes in smoking habits with psoriasis vulgaris according to subgroup
Supplementary Fig 3. Association between changes in smoking habits and palmoplantar pustulosis by subgroup