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Table 2 Baseline characteristics in patients and GP controls without a previous history of NL, given as frequencies (%)

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

Comorbidities and medications at baseline

Gout cases

(N = 29,171)

GP controls

(N = 131,449)

Age, mean (std)

69.1 (14.8)

68.2 (14.6)

Men (%)

67.3

66.3

Hypertension (%)

58.4

33.0

Ischemic heart disease (%)

26.6

13.5

Diabetes (%)

18.6

9.2

Kidney disease (%)

11.1

2.6

Obesitya (%)

9.9

3.1

Statins (%)

32.0

19.3

Allopurinol (%)

26.4

N/Ac

Beta blockers (%)

38.4

20.1

Calcium antagonists (%)

16.3

10.9

Thiazide diuretics (%)

6.1

3.6

Losartan (%)

4.0

2.0

Potassium-sparing diuretics (%)

6.7

2.1

RAAS-inhibitors (%)

24.9

12.2

Loop diuretics (%)

27.9

7.9

Education (≤9) years (ref)b (%)

44.7

41.0

Education (10‒12) yearsb (%)

37.8

36.9

Education (>12) yearsb (%)

15.5

20.3

  1. NL, nephrolithiasis, RAAS renin-angiotensin-aldosterone-system, N/A not applicable
  2. aBased on ICD-10-code E66 and ATC code A08
  3. bBaseline data were complete except for data on education level, which was missing for 1.8% of the GP controls and 2 percent of the gout cases.
  4. cPrior users of urate-lowering-therapy were excluded from the control group