title: Asymptomatic coronary heart disease detected on epidemiological survey of urban population of Delhi.
abstract: A community based epidemiological study of coronary heart disease (CHD) was carried out in a random sample of 13723 adults in the age group of 25-64 years in the urban population of Delhi. The electrocardiogram (ECG) of all clinically detected CHD cases and of a sample of 5621 persons (selected on the basis of alternate household screened) without clinical manifestations of CHD, was obtained. Out of 5621 persons labelled as asymptomatic, CHD evidence of Q wave myocardial infarction (MI) was present in 80 ECGs (1.4%). Another 296 ECGs had ST & T changes vide Minnesota Code 4-1-1, 4-1-2, 5-1 and 5-2 acceptable as evidence of probable CHD. The overall prevalence rate of asymptomatic CHD was 6.7% (male 5.6%, female 7.6%). Silent MI was more common in the male patients (1.7% vs 1.1%, p < 0.001). However, ST-T changes were more common in female patients (6.5% vs 3.9%, p < 0.001). The ST-T changes showed a steady factor in asymptomatic CHD cases was hypertension in both sexes (male-45.2%, female-43.5%) p = NS. Obesity was present in 24% of male & 46.1% of female patients (p < 0.001). Family history was found in 20% cases of both sexes. Smoking was recorded in 34.9% male and 10.9% female patients with asymptomatic CHD (p < 0.001).
authors.affiliation: Sitaram Bhartia Institute of Science & Research, Centre for Health Care & Rehabilitation, New Delhi.
authors.forename: N
authors.initials: N
authors.lastname: Gopinath
authors.forename: U
authors.initials: U
authors.lastname: Kaul
authors.forename: S L
authors.initials: SL
authors.lastname: Chadha
authors.forename: A K
authors.initials: AK
authors.lastname: Sood
authors.forename: D
authors.initials: D
authors.lastname: Bhattacharya
authors.forename: S
authors.initials: S
authors.lastname: Radhakrishnan
mesh_terms: D000328:Adult; D000367:Age Factors; D003327:Coronary Disease / Q000175:diagnosis / Q000453:epidemiology*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007194:India / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012737:Sex Factors; D014505:Urban Population