| Author | Costa, Érico Castro | |
| Author | Dewey, Michael E. | |
| Author | Ferri, Cleusa Pinheiro | |
| Author | Uchôa, Maria Elizabeth | |
| Author | Firmo, Josélia Oliveira Araújo | |
| Author | Rocha, Fábio Lopes | |
| Author | Prince, Martin | |
| Author | Costa, Maria Fernanda Lima | |
| Author | Stewart, Robert | |
| Access date | 2013-09-09T15:48:04Z | |
| Available date | 2013-09-09T15:48:04Z | |
| Document date | 2010 | |
| Citation | COSTA, Erico Castro et al. Association between sleep duration and all-cause mortality in old age: 9-year follow-up of the Bambuı´ Cohort Study, Brazil. J. Sleep Res., v. 20, p. 303–310, 2010. | pt_BR |
| ISSN | 1365-2869 | |
| URI | https://www.arca.fiocruz.br/handle/icict/6858 | |
| Language | eng | pt_BR |
| Publisher | Wiley Online Library | pt_BR |
| Rights | restricted access | pt_BR |
| Title | Association between sleep duration and all-cause mortality in old age: 9-year follow-up of the Bambuı´ Cohort Study, Brazil | pt_BR |
| Type | Article | pt_BR |
| DOI | 10.1111/j.1365-2869.2010.00884.x | pt_BR |
| Abstract | This study investigates the association of sleep duration with risk of all-cause mortality among elderly Brazilians using data from a 9-year population-based cohort study and applying a multivariable longitudinal categorical and continuous analysis using Coxs proportional hazards models. This analysis used data from the Bambui Health and Ageing Study (BHAS), conducted in Bambuı´ city (approximately 15 000 inhabitants) in southeastern Brazil. The study population comprised 1512 (86.8%) of all eligible 1742 elderly residents. In multivariable analysis, using sleep duration as categorical variable and controlling for multiple measures of sociodemographic and health status, those who slept 9 h or more per night were found to be at higher risk of mortality than those Who slept 7 h [hazard ratio (HR): 1.53; 95% confidence interval (CI): 1.12–2.09]. Excluding those whose deaths occurred within 2 years after entry, this association remained significant (HR: 1.56; 95% CI: 1.12–2.18). In analyses using sleep duration as a continuous variable, a linear correlationwas found between sleep duration andmortality in all adjusted models in the whole sample (HR: 1.08; 95% CI: 1.02–1.15) and following exclusion of those whose deaths occurred within 2 years after entry (HR: 1.13; 95% CI: 1.06–1.21). Both linear and quadratic terms were significant, reflecting a predicted relationship, with mortality predominantly increasing in association with long sleep duration but with the addition of a slight decrease in association with shorter sleep duration. In conclusion, long rather than short sleep duration was associated principally with all-causemortality in this sample. It is therefore reasonable to suggest that clinicians should be aware of the potential adverse prognosis associated with prolonged sleep. | pt_BR |
| Affilliation | Oswaldo Cruz Foundation. Rene Rachou Research Institute. Belo Horizonte, MG, Brazil / Kings College London, Institute of Psychiatry. Health Service and Population Research. Section of Epidemiology. London, UK. | pt_BR |
| Affilliation | Kings College London, Institute of Psychiatry. Health Service and Population Research. Section of Epidemiology. London, UK. | pt_BR |
| Affilliation | Kings College London, Institute of Psychiatry. Health Service and Population Research. Section of Epidemiology. London, UK. | pt_BR |
| Affilliation | Oswaldo Cruz Foundation. Rene Rachou Research Institute. Belo Horizonte, MG, Brazil. | pt_BR |
| Affilliation | Oswaldo Cruz Foundation. Rene Rachou Research Institute. Belo Horizonte, MG, Brazil. | pt_BR |
| Affilliation | Instituto de Previdencia dos Servidores do Estado de Minas Gerais. Department of Psychiatry. Belo Horizonte, MG, Brazil. | pt_BR |
| Affilliation | Kings College London, Institute of Psychiatry. Health Service and Population Research. Section of Epidemiology. London, UK | pt_BR |
| Affilliation | Oswaldo Cruz Foundation. Rene Rachou Research Institute. Belo Horizonte, MG, Brazil / Federal University of Minas Gerais. Medical School. Belo Horizonte, MG, Brazil. | pt_BR |
| Affilliation | Kings College London, Institute of Psychiatry. Health Service and Population Research. Section of Epidemiology. London, UK. | pt_BR |
| Subject | Elderly | pt_BR |
| Subject | Epidemiology | pt_BR |
| Subject | Mortality | pt_BR |
| Subject | Sleep | pt_BR |
