- Participant must demonstrate a 2-night mean latency to persistent sleep (LPS) of >= 25 minutes (with neither night less than [<] 20 minutes), a 2 night mean wake after sleep onset (WASO) >= 30 minutes, and a 2 night mean total sleep time (TST) less than or equal to (=<) 6.5 hours, with neither night greater than (>) 7 hours