MSLT1 and MSLT2 refer to the first and second MSLT, respectively. Each positive and negative sign denotes whether the MSLT was positive or negative for narcolepsy criteria (MSL ≤ 8 minutes, ≥ 2 SOREMPs based on ICSD-3 criteria), respectively. Data are % (n) (of total population). ICSD-3 = International Classification of Sleep Disorders, Third Edition, MSL = mean sleep latency, MSLT = Multiple Sleep Latency Test, NT1 = narcolepsy type 1, NT2 = narcolepsy type 2, SOREMP = sleep onset rapid eye movement period.