Table 1. Incidence of kidney stones among men according to five-year age groups, 1986–2000

Age Group (Years)No. of CasesPerson-YearsIncidence (Cases per 100,000 Person-Years)
40–4419450,784382
45–4929365,970444
50–5427576,622359
55–5922873,396311
60–6419971,663278
65–6916364,343253
≥7012174,922162
Total1473477,700308