Additional file 1: Figure S1. of The effect of long working hours on 10-year risk of coronary heart disease and stroke in the Korean population: the Korea National Health and Nutrition Examination Survey (KNHANES), 2007 to 2013

Nonlinear association between weekly working hours, risk for CHD, and risk for stroke, stratified by age (<45y). Figure S2. Nonlinear association between weekly working hours, risk for CHD, and risk for stroke, stratified by age (≥45y). (DOCX 463 kb)