Fig. 2
Restricted cubic splines dose-response relationship between leisure-time physical activity and risk of type 2 diabetes. Dashed lines represent 95% CI and solid line represents hazard ratios for estimates obtained from regression of restricted cubic splines (5 knots.) Leisure-time physical activity was truncated at 80 MET-hours per week and reference set at 20 MET-hours per week. Pnon-linearity < 0.001