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. 2021 Aug 26;11(8):e052629. doi: 10.1136/bmjopen-2021-052629

Table 1.

Patient participant characteristics

Variable Count (%)
Age
 <40 2/22 (9)
 40–49 3/22 (13)
 50–59 5/22 (23)
 60–69 3/22 (14)
 70–79 6/22 (27)
 >80 3/22 (13)
 Gender
 Male 12/22 (55)
 Female 10/22 (45)
Ethnicity
 White
 British
16/22 (73)
 Black
 British
4/22 (18)
 Asian/Asian
 British
2/22 (9)
 In-centre
 dialysis
15/22 (68)
 Morning sessions 12/15 (80)
 Home HD 7/22 (32)
Current vascular access
 Arteriovenous fistula 19/22 (86)
 Arteriovenous graft 0/22 (0)
 Central venous catheter 3/22 (14)
Charlson Comorbidity Score
 <2 1 (4)
 3–4 5 (23)
 5–6 4 (18)
 7–8 6 (27)
 9–10 5 (23)
 11–12 1 (4)
 13+ 0 (0)
Time since dialysis commencement (years)
 ≤5 11/22 (50)
 6–10 5/22 (23)
 11–15 3/22 (14)
 16–20 1/22 (4.5)
 >20 2/22 (9)

Charlson Comorbidity Index (CCI)65 quantifies an individual’s burden of disease and corresponding 1-year mortality risk. The index adjusts for 17 comorbidities, each one classified with a validated score of 1–6 points, based on the adjusted relative risk of 1‐year mortality. The final total score is used to calculate the probability of survival. The index is being used in this context to demonstrate the overall disease burden of the population under study.

n=22.

HD, haemodialysis.