Self-reported stroke and myocardial infarction had adequate sensitivity in a population-based prospective study JPHC (Japan Public Health Center)-based Prospective Study.
OBJECTIVE
We sought to clarify the validity of self-reported stroke and myocardial infarction (MI) among Japanese population, because information on the validity, particularly on the sensitivity, of self-reported cardiovascular disease is limited and may differ among countries.


METHODS
Using the 10-year follow-up questionnaire and a stroke and MI registry in the Japan Public Health Center-based prospective Study (JPHC Study) cohort (n=91,186), we calculated sensitivity and positive predictive values of self-reported stroke and MI incidence over 10 years.


RESULTS
Sensitivity of self-reported incident stroke was 73%, and that for MI was 82%. Positive predictive values were 57% for stroke and 43% for MI. The supplemental inclusion of self-reported angina pectoris increased the sensitivity of MI to 89%, but attenuated the positive predictive value to 18%. Sensitivity of self-reported stroke was highest for subarachnoid hemorrhage (88%), but did not differ greatly among other stroke subtypes, affected sites or size.


CONCLUSIONS
Self-reported stroke and MI seem sensitive enough to use for exclusion of stroke and MI at baseline in Japanese cohort studies. However, self-report has too many false positives to be used as the only criterion for incident stroke and MI.
Yamagishi
Kazumasa
K
Department of Public Health Medicine, Graduate School of Comprehensive Human Sciences, and Institute of Community Medicine, University of Tsukuba, Tsukuba, Japan.
Ikeda
Ai
A
Iso
Hiroyasu
H
Inoue
Manami
M
Tsugane
Shoichiro
S
D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000453:epidemiology; D003625:Data Collection; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology*; D011446:Prospective Studies; D012307:Risk Factors; D012650:Self Disclosure; D012680:Sensitivity and Specificity; D020521:Stroke / Q000453:epidemiology*; D013345:Subarachnoid Hemorrhage / Q000453:epidemiology; D011795:Surveys and Questionnaires