Table 2 Incidence rates and risks of AVF/AVG dysfunction in SLE and non-SLE patients.

From: Long-term prognosis of vascular access in hemodialysis patients with systemic lupus erythematosus: a retrospective cohort study

Time period

SLE patients

Non-SLE patients (reference)

Crude

Competing risk

No. of events

Person-years

Incidence ratea

No. of events

Person-years

Incidence ratea

HR (95% CI)

P

SHR (95% CI)

P

Overall period

924

3927

23.53

2589

11,950

21.66

1.07 (0.99, 1.16)

0.068

1.09 (1.00, 1.17)

0.027*

Within 90 days

206

313

65.87

580

937

61.90

1.06 (0.91, 1.25)

0.446

1.06 (0.91, 1.25)

0.442

Within 180 days

347

573

60.52

1009

1720

58.66

1.03 (0.91, 1.17)

0.616

1.04 (0.92, 1.17)

0.572

First year

483

1027

47.05

1434

3071

46.69

1.01 (0.91, 1.12)

0.871

1.01 (0.92, 1.12)

0.782

 > 1 year

441

2900

15.21

1155

8879

13.01

1.15 (1.02, 1.29)

0.011

1.16 (1.04, 1.29)

0.007*

1–5 years

332

1973

16.83

910

5824

15.62

1.08 (0.95, 1.22)

0.255

1.09 (0.96, 1.24)

0.174

Within 5 years

815

3000

27.17

2344

8896

26.35

1.03 (0.96, 1.12)

0.4

1.05 (0.97, 1.14)

0.222

5–10 years

100

839.7

11.91

218

2692

8.10

1.47 (1.16, 1.86)

0.001

1.42 (1.12, 1.79)

0.003*

1–10 years

432

2813

15.36

1128

8516

13.25

1.15 (1.03, 1.28)

0.015

1.16 (1.04, 1.29)

0.007*

 > 10 years

9

87.7

10.26

27

363

7.45

1.37 (0.64, 2.91)

0.416

1.34 (0.63, 2.85)

0.450

  1. AVF arteriovenous fistula, AVG arteriovenous graft, SLE systemic lupus erythematosus, HR hazard ratio, SHR subdistribution hazard ratio, CI confidence interval.
  2. aPer 100 person-years.