Validity of the recording of ischaemic heart disease and chronic obstructive pulmonary disease in the Saskatchewan health care datafiles.

The internal validity of the recording of information about ischaemic heart disease (IHD) and chronic obstructive pulmonary disease (COPD) in the administrative health care datafiles of the Canadian province of Saskatchewan is investigated. Comparisons between hospital data and medical charts for acute myocardial infarction and chronic airways obstruction patients showed excellent diagnostic agreement: 97 per cent and 94 per cent, respectively. Appropriate physician service claims were identified for 89 per cent of hospitalizations for IHD and COPD and exact concordance between diagnoses in the two datafiles varied between 15 per cent for acute/sub-acute IHD and 80 per cent for asthma; including any physician diagnosis within the same broad category (IHD or COPD) increased concordance to 79-94 per cent for IHD and 64-88 per cent for COPD. Contextual information related to the hospitalizations was clinically and epidemiologically realistic.

[1]  L. Kuller.  Sudden death--definition and epidemiologic considerations. , 1980, Progress in cardiovascular diseases.

[2]  W. Kannel,et al.  Prognosis after initial myocardial infarction: the Framingham study. , 1979, The American journal of cardiology.

[3]  J. Horne,et al.  Utilization of Publicly Insured Health Services in Saskatchewan Before, During and After Copayment , 1980, Medical care.

[4]  M. Feinleib,et al.  Prodromata of Myocardial Infarction and Sudden Death , 1975, Circulation.

[5]  K. Lee,et al.  Relationship between antecedent angina pectoris and short-term prognosis after thrombolytic therapy for acute myocardial infarction. Thrombolysis and Angioplasty in Myocardial Infarction (TAMI) Study Group. , 1990, American heart journal.

[6]  W. Kannel,et al.  Precursors of sudden coronary death. Factors related to the incidence of sudden death. , 1975, Circulation.

[7]  L. Melton,et al.  Incidence of hip fracture in Saskatchewan, Canada, 1976-1985. , 1990, American journal of epidemiology.

[8]  W. Castelli,et al.  Epidemiology of coronary heart disease: the Framingham study. , 1984, The American journal of medicine.

[9]  L. Wilhelmsen,et al.  Sudden death: identification of high risk groups. , 1973, American heart journal.

[10]  L. Kuller.  Prodromata of sudden death and myocardial infarction. , 1978, Advances in cardiology.

[11]  B. Gerstman,et al.  Use of Subsequent Anticoagulants to Increase the Predictive Value of Medicaid Deep Venous Thromboembolism Diagnoses , 1990, Epidemiology.

[12]  U Bergman,et al.  Fatal upper gastrointestinal hemorrhage or perforation among users and nonusers of nonsteroidal anti-inflammatory drugs in Saskatchewan, Canada 1983. , 1988, Journal of clinical epidemiology.

[13]  N. Rawson.  An Acute Adverse Drug Reaction Alerting Scheme Using the Saskatchewan Health Datafiles , 1993 .

[14]  L L Roos,et al.  How Good Are the Data?: Reliability of One Health Care Data Bank , 1982, Medical care.

[15]  S. Leatherman,et al.  Using Claims Data for Epidemiologic Research: The Concordance of Claims-Based Criteria With the Medical Record and Patient Survey for Identifying a Hypertensive Population , 1993, Medical care.

[16]  Y Wang,et al.  Record linkage to conduct an epidemiologic study on the association of rheumatoid arthritis and lymphoma in the Province of Saskatchewan, Canada. , 1993, Journal of clinical epidemiology.

[17]  W. Kannel,et al.  Sudden death: lessons from subsets in population studies. , 1985, Journal of the American College of Cardiology.

[18]  L. Demlo,et al.  Reliability of Information Abstracted from Patients' Medical Records , 1978, Medical care.

[19]  H. Risch,et al.  Menopausal hormone usage and breast cancer in Saskatchewan: a record-linkage cohort study. , 1994, American journal of epidemiology.

[20]  L I Iezzoni,et al.  Coding of acute myocardial infarction. Clinical and policy implications. , 1988, Annals of internal medicine.

[21]  D. Sackett,et al.  One year mortality outcomes of all coronary and intensive care unit patients with acute myocardial infarction, unstable angina or other chest pain in Hamilton, Ontario, a city of 375,000 people. , 1989, The Canadian journal of cardiology.

[22]  E. Fisher,et al.  The accuracy of Medicare's hospital claims data: progress has been made, but problems remain. , 1992, American journal of public health.

[23]  M. Townsend,et al.  Validation of hospital discharge diagnosis data for chronic obstructive pulmonary disease and other allied conditions. , 1986, American journal of public health.

[24]  C. Bombardier,et al.  Validity of rheumatoid arthritis diagnoses listed in the Saskatchewan Hospital Separations Database. , 1993, Journal of clinical epidemiology.

[25]  J. Alpert,et al.  Recent changes in attack and survival rates of acute myocardial infarction (1975 through 1981). The Worcester Heart Attack Study. , 1986, JAMA.

[26]  Pierre Ernst,et al.  The Use of β-Agonists and the Risk of Death and near Death from Asthma , 1992 .

[27]  U. Bergman,et al.  Increased prescribing of antidepressants subsequent to beta-blocker therapy. , 1990, Archives of internal medicine.

[28]  W A Ray,et al.  Benzodiazepines of long and short elimination half-life and the risk of hip fracture. , 1989, JAMA.