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. 2019 Oct 21;11:231–239. doi: 10.2147/NSS.S229105

Table 1.

Demographic And General Information. WASO Reflects The Duration Of Wakefulness Occurring After Defined Sleep Onset

Variable Total (n=38) Mean ± SD/n (%)
Age at onset (years) 17.7 ± 5.6
Age at recruitment (years) 24.3 ± 8.6
Age at the end of the study (years) 34.5 ± 11.8
Body mass index (kg/m2) 33.3 ± 6
Males 27 (71.1%)
Smokers 4 (10.5)
Educational level (High school and more) 32 (84.2)
Comorbid obstructive sleep apnea 18 (47.4)
Restless legs syndrome 0 (0)
PSG findings at presentation
 Sleep efficiency (%) 81 ± 11.2
 Arousal index (arousals/h) 20.4 ± 14.5
 Apnea hypopnea index (events/h) 10.6 ± 13.9
 WASO (min) 5.9 ± 11.1
MSLT findings at presentation
 Sleep latency (min) 2.1 ± 2.9
 SOREM periods 3.6 ± 0.7

Abbreviations: SD, standard deviation; PSG, polysomnography; WASO, wake after sleep onset; MSLT, multiple sleep latency test; SOREM, sleep-onset rapid eye movement.