Association of lifestyle-related factors with circadian onset patterns of acute myocardial infarction: a prospective observational study in Japan.

ABSTRACT:

Objective

The onset of acute myocardial infarction (AMI) shows characteristic circadian variations involving a definite morning peak and a less-defined night-time peak. However, the factors influencing the circadian patterns of AMI onset and their influence on morning and night-time peaks have not been fully elucidated.

Design, setting and participants

An analysis of patients registered between 1998 and 2008 in the Osaka Acute Coronary Insufficiency Study, which is a prospective, multicentre observational study of patients with AMI in the Osaka region of Japan. The present study included 7755 consecutive patients with a known time of AMI onset.

Main outcomes and measures

A mixture of two von Mises distributions was used to examine whether a circadian pattern of AMI ha

SUBMITTER: Edahiro R 

PROVIDER: S-EPMC4054644 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature