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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Sleep Med Rev. 2009 Nov 25;14(3):191–203. doi: 10.1016/j.smrv.2009.07.006

Figure 1. Model for socioecological influences upon sleep duration/behavior and associated outcomes.

Figure 1

A – Direct causal relation between sleep duration and mortality

B1 & B2 – Intermediary role of sleep (mediator and moderator roles)

C – Cause of outcomes that, in turn, confer increased mortality

D – Linked with phenomena that are associated with increased mortality