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. 2023 Jan 17;45(3):1761–1774. doi: 10.1007/s11357-023-00727-3

Fig. 1.

Fig. 1

Restricted cubic splines of the hazard ratios of chronic kidney disease with baseline cardiorespiratory fitness. CKD, chronic kidney disease; CRF, cardiorespiratory fitness; Dashed lines represent the 95% confidence intervals for the spline model (solid line). Models were adjusted for age, systolic blood pressure, history of type 2 diabetes, smoking status, history of hypertension, history of coronary heart disease, total cholesterol, alcohol consumption, estimated glomerular filtration rate, physical activity, and socioeconomic status