Table 4.

Event rates for ESRD, overall mortality, and cancer mortality for stone formers and age- and gender-matched non-stone formers by stone former category

	ESRD event rate per 1000 person-years		Mortality event rate per 1000 person-years		Cancer mortality event rate per 1000 person-years
Stone Category	SF	Non-SF	SF	Non-SF	SF	Non-SF
Incident symptomatic	0.54	0.30	9.45	8.21	2.91	2.26
Confirmed	0.55	0.30	9.82	8.40	2.89	2.25
Suspected	0.50	0.28	7.97	7.42	2.99	2.30
Recurrent symptomatic	0.65	0.24	11.89	11.22	3.08	2.38
Asymptomatic	1.87	0.36	26.30	17.88	5.88	4.11
Bladder	1.69	1.35	67.00	47.84	15.20	8.32
Miscoded	1.50	0.18	14.81	12.40	4.61	3.25

SF, stone former; ESRD, end-stage renal disease