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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Sleep Med. 2011 Oct 28;13(1):52–57. doi: 10.1016/j.sleep.2011.06.010

Figure 2.

Figure 2

Hierarchical tree for insomnia complaints and symptoms: Justification for Global Sleep Dissatisfaction with sleep quantity or quality (treated as two separated variables)

Legend: DIS: Difficulty initiating sleep; DRS: Difficulty resuming sleep; EMA: Early morning awakenings; NRS: nonrestorative sleep; GSD: Global sleep dissatisfaction