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Sleep Disorders Screening Checklist
Availability
Please visit this website for more information about the instrument: Sleep Disorders Screening Checklist
Classification
Supplemental: Myalgic encephalomyelitis/Chronic fatigue syndrome (ME/CFS)
Short Description of Instrument
A 17-item survey that assesses the frequency of symptoms over the past year. Items based on American Academy of Sleep Medicine and DSM-V diagnostic criteria for the 6 major sleep disorders subgroups.
 
Population: Originally designed to help recruit adult subjects for sleep studies; in study cited below, tested on health community-based controls and several hundred patients referred to sleep clinic.
Scoring
Different items make up 6 different subscales corresponding to 6 different major categories of sleep disorders. Scores are tallied up with higher scores meaning more common occurrence of a specific symptom. There are cut-points for scores specific to each subscale; a score higher than the cut-point means that the subject may have that specific disorder. (See Table 6 in Klingman 2015).
Rationale/Justification
Advantages:
1) Burden -- relatively short survey for screening; 2) Relevance - Sleep disorders common among ME/CFS subjects (whether as exclusionary or co-morbid); help rule out subjects whose symptoms (e.g., fatigue, cognitive issues, etc.) are primarily due to treatable sleep disorder; 3) Acceptability - gauging symptoms over a year might be difficult given cognitive issues, no items seem offensive; 4) Does not seem too hard for researchers to score.
 
Limitations:
1) Not tested in ME/CFS; 2) Not tested in primary care clinic subjects; 3) Some of the subscales (e.g., OSA) seem to perform better than others. Parasomnia and circadian disorder subscales untested due to no subjects diagnosed with these disorders in the studies; 4) No testing of criteria in an independent cohort to predict sleep disorders; 5) High negative predictive value may help to rule out sleep disorders. Sensitivity varies from 0.70–0.88 but positive predictive value was only 10%–40%; 6) Doesn't include items about hours of sleep, insufficient/ unrefreshing sleep; 7) 1-year time period may be too long for ME/CFS subjects to remember; and 8) Internal consistency reliability runs from 0.24–0.66.
References
Klingman KJ. Evaluation of a sleep disorders screening questionnaire for primary care adults. State University of New York at Buffalo, 2015; https://ubir.buffalo.edu/xmlui/handle/10477/51447?show=full.
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