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Table 6 Patients treated, treatment duration, and mortality by calendar year in each dialysis unit. USRDS data are shown for comparison

From: Effect of electronic patient record use on mortality in End Stage Renal Disease, a model chronic disease: retrospective analysis of 9 years of prospectively collected data

Years 1998 1999 2000 2001 2002 2003 2004 2005 2006
Number of patients treated during each year
Unit A 279 236 294 295 268 287 313 317 340
Unit B NA 112 152 157 166 160 167 232 258
Unit C NA NA 154 171 171 180 190 192 193
Mean age (years) at start of HD treatment in each year
Unit A 56.9 58.7 57.3 57.2 56.1 56.0 57.3 56.7 58.2
Unit B NA 60.7 59.9 59.5 60.0 59.7 60.8 61.5 62.9
Unit C NA NA 62.5 63.4 64.2 61. 9 61.5 62. 6 62.5
USRDS* 56.2 56.5 56.8 57.0 57.3 57.5 57.7 57.9 NA
Duration of treatment (years)
Unit A 193.5 173.8 221.1 208.1 207.9 219.4 232.8 235.3 244.8
Unit B NA 81.0 100.2 118.6 121.6 121.9 130.6 169.3 202.9
Unit C NA NA 101.7 126.5 139.9 144.8 145.9 148.8 145.2
Number of deaths
Unit A 36 35 38 47 29 19 38 34 27
Unit B NA 25 26 17 21 21 14 27 27
Unit C NA NA 27 26 20 22 24 23 22
Mortality per 1000 patient years
Unit A 186.1 201.4 171.8 225.8 139.4 86.2 163.2 144.5 110.8
Unit B NA 308.7 259.5 143.4 172.7 172.3 107.2 159.5 133.1
Unit C NA NA 265.5 205.6 142.9 151.9 164.5 154.5 151.5
USRDS** 234 241 236 238 237 236 232 229 NA
  1. * USRDS age data are mean age of all prevalent ESRD patients (both dialysis and transplant) in each calendar year.
  2. ** USRDS mortality data are for patients treated by HD.