Treatment approach and outcome for 512 patients with NREM parasomnia or POD. NREM, non-REM; POD, parasomnia overlap disorder; CPAP, continuous positive airway pressure; MAD, mandibular advancement device; CBT, cognitive behavioral treatment; MBSR, mindfulness-based stress reduction program; DA, dopamine agonist; Anticonvulsant, pregabalin or gabapentin; Stimulant, modafinil; Combination of treatments, combination of more than one treatment options.