Sleep-wake patterns of the sample.

TST = total sleep time; SOL = sleep onset latency; WASO = duration of wake after sleep onset; PSQI = Pittsburgh Sleep Quality Index; ESS = Epworth Sleepiness Scale. Excessive daytime sleepiness referred to an ESS>1. Chi-square test was run only on between-group comparison on PSQI-poor sleepers and ESS-excessive daytime sleepiness. Besides PSQI-poor sleepers and ESS-excessive daytime sleepiness, t, x2 and p-value, all the figures are mean and standard deviation of each variable.Sleep-wake patterns of the sample.