<qa>  What was the clinical efficacy of cognitive-behavior therapy and pharmacThe present study examines the short- and long-term clinical efficacy of cognitive-behavior therapy and pharmacological treatment in patients suffering from late-life primary insomnia. 46 subjects suffering from chronic primary insomnia were randomized into either cognitive-behavior therapy CBT, n18, hypnotics 7.5 mg Zopiclone, n16, or placebo treatment n12. All active treatments lasted 6 weeks with follow-ups conducted at 6 months. Ambulant clinical polysomnography PSG and sleep diaries were used on all three assessment points. 