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Smoothed spline of expected successful life years and baseline cystatin C level. Pointwise 95% confidence intervals (dashed lines) and a rug of the middle 95% of cystatin C measures are shown
Reproduced with permission from Sarnak M, Katz, R, Fried L et al. Cystatin C and Aging Success. Arch Intern Med. 168(2):147-153,2008
