Related by context. Frequent words. (Click for all words.) 69 sleepiness 69 excessive daytime sleepiness 67 ADHD symptoms 65 depressive symptoms 65 sleep disturbances 61 obstructive sleep apnea 60 sleep disordered breathing 58 cognitive function 58 sleep disorders 57 drowsiness 57 cognitive impairment 57 chronic insomnia 56 cognitive deficits 56 cognitive functioning 56 psychotic symptoms 56 dyspnea 56 lung function 55 apnea 55 insomnia 55 Sleep apnea 54 comorbid 54 hypoglycemia 54 sleep apnea 54 cognitive impairments 54 neurocognitive 54 HbA1c levels 54 depressive episodes 54 caffeine intake 53 proteinuria 53 exacerbations 53 syncope 53 airway inflammation 53 migraine sufferers 53 glucose tolerance 53 attentional 53 obstructive sleep apnea OSA 53 comorbidity 53 mood disorders 53 Parkinson disease PD 53 psychological distress 52 REM sleep 52 snorers 52 cardiovascular mortality 52 irritability 52 depressive disorders 52 ADHD 52 tinnitus 52 pramipexole 52 brain atrophy 52 comorbidities 51 generalized anxiety disorder 51 impulsivity 51 musculoskeletal pain 51 valproate 51 sleeplessness 51 cognition 51 diastolic blood pressure 51 inflammatory markers 51 RLS 51 hypoglycaemia 51 systolic blood pressure 51 repetitive behaviors 51 endothelial function 51 disorder ADHD 51 dietary intake 51 aripiprazole 51 neurodevelopmental 51 cognitive dysfunction 51 hot flushes 51 wakefulness 50 GERD 50 cortisol levels 50 hyperactivity 50 involuntary movements 50 airway obstruction 50 donepezil 50 gastrointestinal symptoms 50 depression anxiety 50 modifiable risk 50 cognitive 50 chronic cough 50 snoring 50 myocardial infarction MI 50 cognitive decline 50 mental alertness 50 cognitive abilities 50 hyperglycemia 49 lipid levels 49 quetiapine 49 blood lipids 49 thyroid function 49 anxiety disorders 49 co morbidities 49 depressive disorder 49 sleep deprived 49 hypertensive patients 49 fasting glucose 49 nasal congestion 49 major depressive disorder 49 tiredness 49 headache nausea