Smitherman TA, et al. - Researchers attempted at providing a quantitative synthesis of existing cognitive-behavioral treatment of insomnia (CBTi) trials for adults with chronic migraine using Bayesian statistical methods, given their utility in combining prior knowledge with sequentially gathered data. They used completer analyses of 2 randomized trials comparing CBTi to a sham control intervention (Calhoun and Ford, 2007; Smitherman et al, 2016) to quantify the effects of a brief course of treatment on headache frequency. Outcomes suggested that among patients with chronic migraine, cognitive-behavioral interventions for comorbid insomnia hold promise for reducing headache frequency. Findings thereby support the literature suggesting that migraineurs with comorbid conditions often respond well to behavioral interventions and that targeting comorbidities may improve migraine itself.