Fig. 2From: Zopiclone versus placebo for short-term treatment of insomnia in patients with advanced cancer: study protocol for a double-blind, randomized, placebo-controlled, clinical multicenter trialN1–N6 are 6 nights of intervention with zopiclone/placebo. The initial dose is zopiclone/placebo 3.75 mg (dose level 1). Dose level 2 is 5 mg zopiclone/placebo, and dose level 3 is 7.5 mg zopiclone/placeboBack to article page