Vulnerability to winter mortality in elderly people in Britain: population based study

To examine the determinants of vulnerability to winter mortality in elderly British people.Population based cohort study (119,389 person years of follow up).106 general practices from the Medical Research Council trial of assessment and management of older people in Britain.People aged > or = 75 years.Mortality (10,123 deaths) determined by follow up through the Office for National Statistics.Month to month variation accounted for 17% of annual...