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. 2020 Aug 8;21:332. doi: 10.1186/s12882-020-01942-2

Table 1.

Disease-specific comorbidities and CCI of HK patients

Disease (ICD-10-GM code) Non-acute outpatient treated HK patients
N = 3333
Chronic HK patients
N = 1693
n % n %
CKD
 CKD stages 1 to 5 (N18.1 + N18.2 + N18.3 + N18.4 + N18.5) 1737 52.1 860 50.8
 CKD stage 3 to 5 (N18.3 + N18.4 + N18.5) 1623 48.7 805 47.5
HF
 Heart failure (ANY) (I50.11-I50.14, I50.19) 681 20.4 320 18.9
T2DM
 Diabetes mellitus, type 2 (E11.-) 1481 46.44 753 44.5
Comorbidities (CKD, T2DM, HF)
None 943 28.3 483 28.5
One Comorbidity 1203 36.1 633 37.4
 CKD 640 19.2 331 19.6
 T2DM 486 14.6 264 15.6
 HF 77 2.3 38 2.2
Two Comorbidities 865 26.0 431 25.5
 CKD + T2DM 583 17.5 295 17.4
 CKD + HF 192 5.8 88 5.2
 T2DM + HF 90 2.7 48 2.8
Three Comorbidities 322 9.7 146 8.6
≥ One Comorbidity 2390 71.7 1210 71.5
Charlson Comorbidity Index (CCI)
CCI score: 0 397 11.9 185 10.9
CCI score: 1 502 15.1 283 16.7
CCI score: 2 485 14.6 247 14.6
CCI score: 3 494 14.8 265 15.7
CCI score: ≥4 1455 43.7 713 42.1
Mean CCI score 3.32 3.26