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. 2005 Mar;28(3):345-7.

The siesta and mortality: twelve years of prospective observations in 70-year-olds

Michael Bursztyn  1 , Jochanan Stessman
Affiliations
  • PMID: 16173656

The siesta and mortality: twelve years of prospective observations in 70-year-olds

Michael Bursztyn et al. Sleep. 2005 Mar.

Abstract

Study objective: To examine effect of siesta on mortality.

Design: A 12 years prospective cohort.

Setting: Population sample.

Participants: Residents of Jerusalem (n=455), 70 year olds.

Interventions: N/A.

Results: There were more males in the group with the siesta (n=276), 68% and more (16%) past myocardial infarction than those without the siesta, 6% (n=179) p < 0.01. After 12 years 147 subjects died. Survival was 64% in people practicing the siesta, and 74%, who did not p = 0.005. In a Cox proportional hazard model, that included many confounding factors hazard ratio (HR) for mortality was 1.6 95% confidence interval (CI) 1.2-2.7, for those who napped. After exclusion of the 19 subjects who died during the first 2 years of follow-up, the hazard ratio was not materially altered, HR of 1.6 95% CI, 1.0-2.6.

Conclusion: Although causality is not clear, the siesta appears to be a significantly independent mortality predictor.

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