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Table 1 Incidence rates (including all individual nephrolithiasis (NL) events without exclusion of subjects with NL before start of follow up) for NL in patients with gout and general population (GP) controls by sex and age groups and overall, with 95% confidence interval

From: Incidence of and risk factors for nephrolithiasis in patients with gout and the general population, a cohort study

 

Gout cases (n = 29,968)

GP controls (n = 138,678)

 

NL events, n

Person-years at risk, n

Incidence rate per 1000 person-years (95% CI)

NL events, n

Person-years at risk, n

Incidence rate per 1000 person-years (95% CI)

Women

 20‒39 years

8

1130

7.2 (3.2‒14.0)

18

5487

3.3 (1.9‒5.2)

 40‒59 years

44

6363

6.9 (5.0‒9.3)

64

32,015

2.0 (1.5‒2.6)

 60‒79 years

74

17,043

4.3 (3.4‒5.5)

212

87,677

2.4 (2.1‒2.8)

 80+ years

35

9598

3.7 (2.5‒5.1)

71

51,216

1.4 (1.1‒1.8)

Men

 20‒39 years

35

4571

7.7 (5.3‒10.7)

68

22,323

3.1 (2.4‒3.9)

 40‒59 years

177

23,267

7.6 (6.5‒8.8)

552

115,562

4.8 (4.4‒5.2)

 60‒79 years

266

37,896

7.0 (6.2‒7.9)

966

187,501

5.2 (4.8‒5.5)

 80+ years

39

10,205

3.8 (2.7‒5.2)

174

49,622

3.5 (3.0‒4.1)

Women

161

34,134

4.7 (4.0‒5.5)

365

176,395

2.2 (1.9‒2.3)

Men

517

75,939

6.8 (6.2‒7.4)

1760

375,008

4.7 (4.5‒4.9)

Total

678

110,073

6.2 (5.7‒6.6)

2125

551,403

3.9 (3.7‒4.0)