Figure 1. Multivariable-adjusted cumulative incidence curve for type 2 diabetes according to cardiorespiratory fitness category in 1986–2009. Adjusted for age (continuous variable), body mass index (continuous variable), systolic blood pressure (continuous variable), smoking habit (non-smoker, past smoking, 1–20 cigarettes/day, or ≥21 cigarettes/day), drinking habit (none, 1–20 g/day, or ≥21 g/day), and family history of diabetes (yes or no).