Measurements and Results: Vital status was ascertained through questionnaires,
contact with next of kin, and the National Death Index. During
the 14 years of this study (1986-2000), 5409 deaths occurred in the
82,969 women who responded to the initial questionnaire. Mortality risk
Conclusions: These results confirm previous findings that mortality risk
in women is lowest among those sleeping 6 to 7 hours. Further research
is needed to understand the mechanisms by which short and long sleep
times can affect health