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Table 4 Characteristics of the cohorts identified by algorithms and by the regional dialysis registry

From: Developing and validating an algorithm to identify incident chronic dialysis patients using administrative data

  Algorithm 1 Algorithm 2 ERDR
N 680 676 625
Age, mean ± sd 67.6 ± 15.0 67.3 ± 15.3 68.0 ± 14.6
Females, n (%) 233 (34.3) 236 (34.9) 215 (34.7)
Haemodialysis, n (%) 591 (86.9) 591 (87.4) 546 (88.2)
n. of treatments in the first year, median (p25-p75) 24 (11–103) 28 (11–105) 26 (11–106)
n. of hospital admissions in the first year, mean ± sd 2.6 ± 2.2 2.7 ± 2.2 2.1 ± 1.7
Charlson Comorbidity Index, median (p25-p75) 1 (0–3) 2 (1–3) 2 (1–3)