A Prospective Study on the Relationship Between Sleep Deprivation and Heart

Short Answer

A prospective study on the relationship between sleep deprivation and heart disease was done by Ayas, et. al. (Arch Intern Med 2003). Women who slept 6 hours a night were compared to women who slept for 8 hours a night (reference group). After adjusting for potential confounding variables like smoking, a 95% confidence interval for the relative risk of heart disease was (0.98, 1.42). Based on this confidence interval, state what the association between sleep deprivation and heart disease is.