Comparison of case ascertainment by medical record linkage and cohort follow-up to determine incidence rates for transient ischemic attacks and stroke

Jack P. Whisnant, L. Joseph Melton, Patricia H. Davis, W. Michael O'Fallon, Katsuya Nishimaru, Bruce S. Schoenberg

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

During the period 1960-1972, the medical record linkage index method provided an estimated average annual age- and sex-adjusted rate for first transient ischemic attack (TIA) of 134 per 100,000 population for those age 50 years and older. The cohort method estimate was 237 per 100,000 population (95% confidence limits (CL), 165-310). The discrepancy was due to 18 cases of TIA noted at the time of patient visits in the cohort analysis that were not identified from the medical record analysis. The cohort analysis for all strokes at age 50 years and older was not significantly different from the medical record linkage analysis. Although the cohort follow-up method provided better case ascertainment in this study, current indexing procedures provide case ascertainment equal to that of the cohort method and at less cost. No trend was found to suggest that incidence rates for TIA were decreasing in the period 1955-1979, in contrast to stroke in Rochester, Minn.

Original languageEnglish (US)
Pages (from-to)791-797
Number of pages7
JournalJournal of Clinical Epidemiology
Volume43
Issue number8
DOIs
StatePublished - 1990

Fingerprint

Medical Record Linkage
Transient Ischemic Attack
Stroke
Incidence
Cohort Studies
Population
Medical Records
Costs and Cost Analysis

Keywords

  • Cohort analysis
  • Incidence rate
  • Medical record linkage analysis
  • Stroke
  • Transient ischemic attack (TIA)

ASJC Scopus subject areas

  • Medicine(all)
  • Epidemiology
  • Public Health, Environmental and Occupational Health

Cite this

Comparison of case ascertainment by medical record linkage and cohort follow-up to determine incidence rates for transient ischemic attacks and stroke. / Whisnant, Jack P.; Joseph Melton, L.; Davis, Patricia H.; Michael O'Fallon, W.; Nishimaru, Katsuya; Schoenberg, Bruce S.

In: Journal of Clinical Epidemiology, Vol. 43, No. 8, 1990, p. 791-797.

Research output: Contribution to journalArticle

Whisnant, Jack P. ; Joseph Melton, L. ; Davis, Patricia H. ; Michael O'Fallon, W. ; Nishimaru, Katsuya ; Schoenberg, Bruce S. / Comparison of case ascertainment by medical record linkage and cohort follow-up to determine incidence rates for transient ischemic attacks and stroke. In: Journal of Clinical Epidemiology. 1990 ; Vol. 43, No. 8. pp. 791-797.
@article{62ed1edc797443ad96d0aee870604857,
title = "Comparison of case ascertainment by medical record linkage and cohort follow-up to determine incidence rates for transient ischemic attacks and stroke",
abstract = "During the period 1960-1972, the medical record linkage index method provided an estimated average annual age- and sex-adjusted rate for first transient ischemic attack (TIA) of 134 per 100,000 population for those age 50 years and older. The cohort method estimate was 237 per 100,000 population (95{\%} confidence limits (CL), 165-310). The discrepancy was due to 18 cases of TIA noted at the time of patient visits in the cohort analysis that were not identified from the medical record analysis. The cohort analysis for all strokes at age 50 years and older was not significantly different from the medical record linkage analysis. Although the cohort follow-up method provided better case ascertainment in this study, current indexing procedures provide case ascertainment equal to that of the cohort method and at less cost. No trend was found to suggest that incidence rates for TIA were decreasing in the period 1955-1979, in contrast to stroke in Rochester, Minn.",
keywords = "Cohort analysis, Incidence rate, Medical record linkage analysis, Stroke, Transient ischemic attack (TIA)",
author = "Whisnant, {Jack P.} and {Joseph Melton}, L. and Davis, {Patricia H.} and {Michael O'Fallon}, W. and Katsuya Nishimaru and Schoenberg, {Bruce S.}",
year = "1990",
doi = "10.1016/0895-4356(90)90239-L",
language = "English (US)",
volume = "43",
pages = "791--797",
journal = "Journal of Clinical Epidemiology",
issn = "0895-4356",
publisher = "Elsevier USA",
number = "8",

}

TY - JOUR

T1 - Comparison of case ascertainment by medical record linkage and cohort follow-up to determine incidence rates for transient ischemic attacks and stroke

AU - Whisnant, Jack P.

AU - Joseph Melton, L.

AU - Davis, Patricia H.

AU - Michael O'Fallon, W.

AU - Nishimaru, Katsuya

AU - Schoenberg, Bruce S.

PY - 1990

Y1 - 1990

N2 - During the period 1960-1972, the medical record linkage index method provided an estimated average annual age- and sex-adjusted rate for first transient ischemic attack (TIA) of 134 per 100,000 population for those age 50 years and older. The cohort method estimate was 237 per 100,000 population (95% confidence limits (CL), 165-310). The discrepancy was due to 18 cases of TIA noted at the time of patient visits in the cohort analysis that were not identified from the medical record analysis. The cohort analysis for all strokes at age 50 years and older was not significantly different from the medical record linkage analysis. Although the cohort follow-up method provided better case ascertainment in this study, current indexing procedures provide case ascertainment equal to that of the cohort method and at less cost. No trend was found to suggest that incidence rates for TIA were decreasing in the period 1955-1979, in contrast to stroke in Rochester, Minn.

AB - During the period 1960-1972, the medical record linkage index method provided an estimated average annual age- and sex-adjusted rate for first transient ischemic attack (TIA) of 134 per 100,000 population for those age 50 years and older. The cohort method estimate was 237 per 100,000 population (95% confidence limits (CL), 165-310). The discrepancy was due to 18 cases of TIA noted at the time of patient visits in the cohort analysis that were not identified from the medical record analysis. The cohort analysis for all strokes at age 50 years and older was not significantly different from the medical record linkage analysis. Although the cohort follow-up method provided better case ascertainment in this study, current indexing procedures provide case ascertainment equal to that of the cohort method and at less cost. No trend was found to suggest that incidence rates for TIA were decreasing in the period 1955-1979, in contrast to stroke in Rochester, Minn.

KW - Cohort analysis

KW - Incidence rate

KW - Medical record linkage analysis

KW - Stroke

KW - Transient ischemic attack (TIA)

UR - http://www.scopus.com/inward/record.url?scp=0025172871&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025172871&partnerID=8YFLogxK

U2 - 10.1016/0895-4356(90)90239-L

DO - 10.1016/0895-4356(90)90239-L

M3 - Article

C2 - 2384767

AN - SCOPUS:0025172871

VL - 43

SP - 791

EP - 797

JO - Journal of Clinical Epidemiology

JF - Journal of Clinical Epidemiology

SN - 0895-4356

IS - 8

ER -