Validation of the Womens Health Initiative Insomnia Rating Scale in a Multicenter Controlled Clinical Trial
Douglas W. Levine, PhD,
Margaret E. Dailey, PhD,
Beverly Rockhill, PhD,
Diane Tipping, MS,
Michelle J. Naughton, PhD and
Sally A. Shumaker, PhD
From the University of South Carolina, Columbia, South Carolina (D.W.L.); Wake Forest University School of Medicine, Winston-Salem, NC (M.E.D., M.J.N., S.A.S.); the University of North Carolina, Chapel Hill, North Carolina (B.R.); and Tipping Associates, Green Lane, PA (D.T.).

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Figure 1. Changes in outcomes over time by treatment condition and by trial.
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Copyright © 2005 by the American Psychosomatic Society