Development of an ICD Coding Definition for Inflammatory Bowel ...

—The national data quality study of Canadian Discharge Abstract Database“ is an ongoing
study to ensure the data quality of IP database. Preliminary findings from the first year
(fiscal year 1999/2000) have now been released. Its target population consists of
approximately 2.5 million inpatients in 550 acute care hospitals. Injury hospitalization,
vaginal births after cesarean section, hospitalization due to pneumonia and influenza,
coronary artery graft, and total hip replacement have been considered. The highest
number of false positive and false negative is reported for cases of pneumonia (i.e. 7.1%
and 12.8%, respectively) and the lowest percentages are documented for delivery (0 %)
[28].
2.2.2 Physician claims services database (PC database)
This database contains information obtained from physicians‘ payment claims. For every
eligible visit or procedure, a physician files a payment claim, in which the diagnosis and
service codes are recorded along with patient (age, gender and health card number) and
physician information.
Unlike hospital discharge abstracts, accuracy of physician claims databases have been
given less attention. Reported agreements between physician claims and hospital
discharge abstracts for schizophrenia and depression in Saskatchewan have been 89%
and 94%, respectively [33]. Two other studies that considered self-reports as gold
standard found 96%, 87%, and 85% agreement for myocardial infarction, diabetes and
hypertension [34, 35].
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