Medical psychologist Jack D. Edinger of Duke University and his colleagues conducted a two - and - a-half-year study of 75 adults suffering from
sleep maintenance insomnia in order to assess the efficacy of a form of cognitive behavioral therapy (CBT), as compared with relaxation therapy and placebo therapy.
But if you wake up in the middle of the night at least three times a week, and it's been going on for at least three months, you may have what's
called sleep maintenance insomnia (a.k.a. the inability to stay asleep).
Taking it 2 to 3 hours before bedtime to coincide with the body's natural melatonin surge and taking a prolonged - release version to
promote sleep maintenance are two strategies I use for helping patients sleep better.
The Sleep Impairment Index is a 7 - item scale that yields a quantitative index of insomnia severity; it was used as a collateral measure of treatment outcome.6 Ratings on a 5 - point scale were obtained on the perceived severity of sleep onset,
sleep maintenance, and early morning awakening problems; interference with daytime functioning; noticeability of impairment caused by the sleep problem; distress / concern caused by the sleep problem; and satisfaction with current sleep pattern.