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Kaplan-Meier 1− survival plot for time (in years) to Medicare claim for benign prostatic hyperplasia (BPH) in patients with ESRD associated with urinary obstruction (chronic pyelonephritis, acquired obstructive uropathy, chronic obstructive uropathy) versus all other causes of ESRD (log rank P = 0.166) censored for death, loss to follow-up, or the end of the study period (31 December 2005).
