Table 1.

Characteristics of patients with end-stage renal disease between 40 and 84 years old under maintenance dialysis in the registry of catastrophic illnesses between March 1997 and December 2008.

	Male	Female
Number of the subjects with ESRD	43,937	46,496
Total person-years at risk	197,753	222,131
Age at start of dialysis (total person-years)
<40 years	35,307	26,653
40–49 years	35,821	41,327
50–59 years	50,873	50,373
60–69 years	56,140	66,570
70–84 years	54,919	63,861
Duration of follow-up years: number (%)
<1 year	10,575 (24.1)	10,313 (22.1)
≥1 and <5 years	19,426 (44.2)	19,701 (42.4)
≥5 and <10 years	11,543 (26.3)	13,415 (28.9)
≥10 years	2393 (5.4)	3067 (6.6)
Urothelial cancer cases
Lower tract urothelial cancer: number (%)	634 (42.8)	847 (57.2)
Upper tract urothelial cancer: number (%)	417 (34.0)	810 (66.0)