Table 1 Descriptive statistics of the cohort

Sex

0 (Men)

931

39.1

1 (Women)

1450

60.9

Start age

0 (18–34 years)

625

26.2

1 (35–44 years)

521

21.9

2 (45–54 years)

488

20.5

3 (55–64 years)

382

16.0

4 (65–74 years)

256

10.8

5 (≥ 75 years)

109

4.6

Start creatinine

0 (lower third)

1128

47.4

1 (middle third)

974

40.9

2 (upper third)

279

11.7

CKD4 + 

103

4.3

RRT

15

0.6

Competing deaths

499

21.0

Deaths treated as censorings

385

16,2