Table 1 Patient demographics (n = 26)

Age, years (±SD)

61 ± 9

Male sex, no (%)

19 (73)

Smokers, no (%)

13 (50)

Body mass index, kg/m² (±SD)

26.7 ± 4.6

Office blood pressure, mmHg (±SD)

136/83 ± 13/9

Medication, no (%)

Calcium channel blockers

20 (77)

Alpha blockers

1 (4)

Beta blockers

16 (62)

Minoxidil

7 (27)

Loop diuretics

16 (62)

Thiazide diuretics

3 (12)

Spironolactone

2 (8)

Allopurinol

3 (12)

Statins

16 (62)

Number of antihypertensive agents (±SD)

2.5 (1.3)

Routine Biochemistry (±SD)

eGFR, ml/min/1.73 m² (MDRD)

26 ± 11

p-Creatinine, μmol/l

231 ± 78

p-Ca⁺⁺

1.22 ± 0.05

p-Phosphate, mmol/l

1.19 ± 0.27

p-Cholesterol (total), mmol/l

5.0 ± 1.2

p-Hemoglobin, mmol/l

8.3 ± 0.8

p-Albumin, g/l

43 ± 3

u-Albumin, mg/l

169 [Interquartile range: 59;489]

P25(OH)D_2+3, nmol/l

56 ± 21

Primary kidney disease, no (%)

Glomerulonephritis

6 (23)

Polycystic kidney disease

3 (12)

Chronic interstitial nephritis

2 (8)

Unknown*

15 (58)