Showing papers by "John Yarnell published in 1988"

Type A behaviour and prevalent heart disease in the Caerphilly study: increase in risk or symptom reporting?

Abstract: Type A behaviour was assessed by modified Framingham scale in a total sample of 1956 employed men in the Caerphilly study. Prevalent heart disease was measured by cardiovascular questionnaire to obtain evidence of myocardial infarction and angina, and by electrocardiogram (ECG) for evidence of ischaemia. Type A was inversely related to age and systolic blood pressure and was positively related to social class and height. It was not related to serum cholesterol or alcohol consumption. After control for age, systolic blood pressure, height, smoking and social class, type A was found to be independent of angina but positively associated with an increased risk of possible myocardial infarction (MI). Type A was also associated with increased risk of confirmed MI. An inverse association was found between type A and asymptomatic ischaemic heart disease (IHD). The association between type A and symptomatic IHD could be due to symptom reporting.

TypeA behaviour andprevalent heart disease inthe Caerphilly study: Increase in riskor symptom reporting?

Abstract: SUMMARY TypeAbehaviour was assessed bymodified Framingham scale inatotal sample of1956 employed men intheCaerphilly study. Prevalent heart disease was measured bycardiovascular questionnaire toobtain evidence ofmyocardial infarction andangina, andbyelectrocardiogram (ECG)forevidence ofischaemia. TypeA was inversely related toageandsystolic blood pressureand was positively related tosocial class andheight. Itwas notrelated toserum cholesterol or alcohol consumption. After control for age,systolic blood pressure,height, smoking andsocial class, typeA was found tobeindependent ofangina butpositively associated with an increased risk ofpossible myocardial infarction (MI). TypeA was also associated withincreased risk ofconfirmed MI.An inverse association was found between typeAandasymptomatic ischaemic heart disease (IHD). The association between typeA andsymptomatic IHDcould beduetosymptomreporting.