RT Journal
A1 Bihorac A, Schold JD, Hobson CE
T1 LOng-term mortality associated with acute kidney injury requiring dialysis
JF JAMA
JO JAMA
YR 2010
FD January 20
VO 303
IS 3
SP 229
OP 230
DO 10.1001/jama.2009.1878
UL http://dx.doi.org/10.1001/jama.2009.1878
AB 
To the Editor: In a retrospective matched cohort study, Dr Wald and colleagues1 concluded that acute kidney injury (AKI) requiring dialysis was associated with an increased risk of end-stage renal disease but not all-cause mortality. This finding contradicts the conclusions of recent studies demonstrating a significant association between AKI and long-term mortality.2- 4 The selection criteria for both the AKI exposure and control groups in their study might have contributed to this difference, rendering questionable the external validity of the study.