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Table 3 Baseline cohort characteristics

From: Validation of a case definition to define chronic dialysis using outpatient administrative data

    Administrative data definitions
  Total Population
(n = 1,118,097)
Reference Standard
(n = 2,227)
1 outpt claim
(n = 2324)
At least 2 outpt claims
(n = 2171)
At least 2 outpt claims 90 days apart
(n = 1657)
Continuous claims
(n = 1508)
Mean Age (SD) 52.6 (17.63) 64.0 (15.62) 62.8 (16.2) 63.2 (16.1) 63.4 (16.2) 64.0 (16.0)
Male (%) 43.2 60.3 59.5 60.1 59.0 59.4
Diabetes (%) 12.7 54.5 51.9 52.7 53.7 54.2
Hypertension (%) 34.7 89.0 88.5 89.5 91.9 92.1
Median number of Charlson Comorbidites (median, IQR*) 0 (0,1) 3 (2,5) 3 (2,5) 3 (2,5) 3 (2,5) 3 (2,5)
Median number of Outpt Physician Claims in 2008 (median, IQR*) 8 (4,14) 67 (24,136) 80 (35,142) 90 (42,145) 124 (69,155) 129 (81,160)
  1. *Interquartile range