Table 1 Patient characteristics by region

N patients

5910

2627

18,251

 Age (years)

65.9 ± 14.7

64.3 ± 12.3

62.7 ± 14.9

 Sex (% male)

62%

66%

55%

 Race (% black)

2%

0%

37%

 Vintage (years)

1.9 (0.4, 5.1)

3.8 (0.7, 9.2)

2.0 (0.5, 4.6)

 Catheter use (%)

26%

1%

32%

 Dialysate calcium (mEq/L)

2.9 ± 0.3

2.8 ± 0.2

2.5 ± 0.2

 BMI (kg/m²)

26.3 ± 5.5

21.5 ± 3.5

28.7 ± 7.1

 Normalized PCR (g/kg/day)

1.00 ± 0.22

0.93 ± 0.18

0.95 ± 0.22

 Hgb (g/dL)

11.5 ± 1.0

10.6 ± 0.9

11.0 ± 0.9

 Serum creatinine (mg/dL)

7.9 ± 2.4

10.4 ± 2.8

7.9 ± 2.8

 Serum albumin (g/dL)

3.73 ± 0.43

3.71 ± 0.36

3.76 ± 0.38

 Serum calcium (mg/dL)

9.0 ± 0.6

8.9 ± 0.6

9.0 ± 0.6

 Serum phosphorus (mg/dL)

4.9 ± 1.2

5.4 ± 1.0

5.2 ± 1.2

 PTH (pg/mL)*

233 (140, 377)

126 (77, 192)

283 (194, 425)

 Calcium (mg/dL per year)

0.1 (−0.5, 0.8)

0.1 (− 0.4, 0.7)

0.1 (− 0.5, 0.7)

 Phosphorus (mg/dL per year)

−0.1 (− 1.5, 1.4)

−0.2 (− 1.5, 1.2)

0.1 (− 1.3, 1.5)

 PTH (% change per month)

0.6 (− 6.1, 7.1)

−1.0 (− 7.0, 4.9)

0.5 (− 6.0, 7.1)

 Calcium

0.1 (0.1, 0.2)

0.1 (0.1, 0.2)

0.1 (0.1, 0.2)

 Phosphorus

0.6 (0.3, 1.1)

0.5 (0.3, 1.0)

0.7 (0.4, 1.3)

 Log(PTH)

0.1 (0.0, 0.2)

0.1 (0.0, 0.2)

0.1 (0.0, 0.3)

 Phosphate binder

85%

88%

80%

 Cinacalcet

23%

22%

22%

 IV vitamin D

24%

45%

71%

 Oral vitamin D

51%

45%

26%

 Any active vitamin D

69%

81%

86%

 Coronary artery disease

37%

28%

34%

 Congestive heart failure

20%

19%

30%

 Cerebrovascular disease

16%

13%

11%

 Peripheral vascular disease

31%

15%

15%

 Other cardiovascular disease

31%

24%

19%

 Hypertension

87%

81%

82%

 Diabetes

38%

41%

62%

 Neurologic disease

12%

7%

8%

 Psychiatric disorder

18%

5%

15%

 Lung disease

15%

4%

12%

 Cancer (non-skin)

16%

10%

7%

 Gastrointestinal bleeding

5%

4%

3%

 Recurrent cellulitis, gangrene

9%

3%

9%