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Table 3 Comparison of kidney function and comorbid conditions between idiopathic calcium stone formers and controls

From: Impact of nephrolithiasis on kidney function

 

Calcium stone formers (N = 146)

Control group (N = 292)

P-value

Age (years)

50 (19–70)

51 (29–71)

-

Males (%)

83 (56.8)

166 (56.8)

-

Serum creatinine (μmol/L)a

74 (41–131)

66 (39–168)

< 0.001

eGFR (mL/min/1.73 m2)a

87.1 ± 18.9

103.8 ± 21.0

< 0.001

eGFR < 60 mL/min/1.73 m2a, N (%)

8 (5.5)

3 (1.0)

0.008

BMI (kg/m2)

27.9 (17.0-49.1)

26.0 (17.7-45.3)

< 0.001

Systolic BP (mm Hg)

129 (86–175)

130 (93–212)

0.28

Diastolic BP (mm Hg)

78 (47–108)

81 (54–122)

0.001

Hypertension, N (%)

44 (30.1)

59 (20.2)

0.02

Diabetes, N (%)

9 (6.2)

8 (2.7)

0.08

Cardiovascular disease, N (%)

7 (4.8)

19 (6.5)

0.48

  1. Data are presented as mean ± standard deviation for normally distributed variables, median (range) for other continuous variables and as number (%) for categorical variables
  2. Abbreviations: BMI body mass index, BP blood pressure, eGFR estimated glomerular filtration rate
  3. aOne case with only a single serum creatinine value available during a stone episode and the corresponding control were excluded