Objective: Self-reported health and disease status is a common method used in epidemiologic studies and surveys involving younger populations, but its reliability in octogenarians is unknown. The objective of the present study was to examine the level of agreement between self-reports and medical records on specific cardiovascular diagnoses. Study Design and Setting: The Life and Living to Advanced Age: a Cohort Study in New Zealand recruited 937 octogenarians in New Zealand. Standardized questionnaires were administered to determine sociodemographic status and medical history. Diagnoses of myocardial infarction (MI), stroke, congestive heart failure (CHF), and hypertension were compared between self-reports and two combined sources of medical records. Results: There were moderate levels of agreement between self-reports and medical records for MI, stroke, and hypertension (κ = 0.43-0.45) and low levels for CHF (κ = 0.19). The proportion of discordance for MI, stroke, CHF, and hypertension was 16%, 12%, 22%, and 27%, respectively. Adjusting for socioeconomic-demographic status and cognitive function, the number of comorbidities is highly associated with agreement between self-reports and medical records (P < 0.01). Gender, socioeconomic status, and cognitive function were also related to agreement between self-reports and medical records, but the strength of association was ethnic specific. Conclusion: Self-reported information on specific cardiovascular conditions has only modest reliability in octogenarians and is associated with number of comorbidities. © 2013 Elsevier Inc. All rights reserved.
Mendeley saves you time finding and organizing research
Choose a citation style from the tabs below