TY  - JOUR
T1  - DAtabase validity in assessing population trends in hip fracture rates in canada—reply
AU  - Leslie WD, O’Donnell S
Y1  - 2010/01/13
N1  - 10.1001/jama.2009.1974
JO  - JAMA
SP  - 134
EP  - 135
VL  - 303
IS  - 2
N2  - 
Various methods for internal and external validation of the accuracy of administrative data sources have therefore been proposed.1- 4 In the case of the HMDB, more attention has been placed on verification of recent data holdings than on earlier data.5 This could introduce biases over time, although the magnitude is unlikely to account for the findings in our study. A low level of discrepancies for hip fractures (6.0%) was identified in the Discharge Abstract Database Data Quality Re-abstraction Study for 1999-2000 and 2000-2001.6 Although this national study did not address earlier data years, a provincial subset with linkable data sources permitted direct comparison of hip fracture rates from most responsible hospital diagnosis, hospital procedures, and surgical billing from 1986 to 2007. There was good overall agreement (within 10%) without any major systematic change over time.

SN  - 0098-7484
M3  - doi: 10.1001/jama.2009.1974
UR  - http://dx.doi.org/10.1001/jama.2009.1974
ER  -