. Author manuscript; available in PMC: 2019 Mar 1.

Published in final edited form as: Mayo Clin Proc. 2018 Feb 14;93(3):291–299. doi: 10.1016/j.mayocp.2017.11.018

Table 2.

Incidence rates of kidney and bladder stones in Olmsted County from 1984 to 2012, by type.

Stone former type		IRR (95% CI) per 5- year change	P	Estimated Incidence Rate (95% CI) in 1984^a	Estimated Incidence Rate (95% CI) in 2012^a	Absolute change in Incidence Rate from 1984–2012^a
Confirmed symptomatic kidney stone

Overall Age-sex-adjusted^b		1.19 (1.17–1.21)	<.001	95 (89–102)	254 (242–267)	159
Men	Age-adjusted^b	1.14 (1.12–1.16)	<.001	145 (137–153)	299 (286–313)	154
	18–39 years	1.19 (1.16–1.21)	<.001	94 (88–100)	243 (231–256)	149
	40–59 years	1.11 (1.09–1.12)	<.001	212 (202–221)	375 (360–390)	163
	≥60 years	1.15 (1.13–1.16)	<.001	130 (123–137)	277 (265–291)	147
Women	Age-adjusted^b	1.29 (1.27–1.32)	<.001	51 (47–56)	217 (205–230)	166
	18–39 yrs	1.28 (1.26–1.31)	<.001	62 (58–67)	252 (239–265)	190
	40–59 yrs	1.33 (1.30–1.36)	<.001	46 (42–50)	226 (214–239)	180
	≥60 yrs	1.26 (1.22–1.29)	<.001	42 (38–46)	149 (139–159)	107

Suspected symptomatic kidney stone

Overall Age-sex-adjusted^b		1.00 (0.96–1.05)	.91	26 (23–30)	26 (23–30)	0
Men	Age-adjusted^b	0.96 (0.93–1.003)	.07	33 (29–37)	27 (23–30)	−6
Women	Age-adjusted^b	1.05 (1.002–1.10)	.04	21 (18–24)	27 (23–31)	6

Asymptomatic kidney stone

Overall Age-sex-adjusted^b		1.36 (1.31–1.42)	<.001	12 (10–14)	71 (64–79)	59
Men	Age-adjusted^b	1.34 (1.29–1.39)	<.001	14 (12–16)	73 (66–80)	58
Women	Age-adjusted^b	1.40 (1.34–1.45)	<.001	11 (9–13)	73 (66–81)	62

Bladder stone

Overall Age-sex-adjusted^b		0.94 (0.87–1.00)	.06	11 (9–14)	8 (6–10)	−3
Men	Age-adjusted^b	0.95 (0.91–1.00)	.06	22 (18–25)	16 (14–20)	−6
Women	Age-adjusted^b	0.86 (0.74–0.99)	.03	3 (2–5)	1 (0–2)	−2

Incidence rate per 100,000 person years

Adjusted rates calculated using the age and sex distribution of the US 2010 census