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Sleep Monitoring/Polysomnography/Quantitative Respiratory Analysis
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MESA variables
The magnitude of reflex (opposing) ventilatory drive response to a change in ventilation; it describes the ventilatory control stability and includes the effect of circulatory delays. Ventilatory drive is the level of ventilation that would be observed at any moment if the respiratory mechanics were normal, i.e. intended ventilation.
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Sleep Questionnaires/Hypersomnia
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APOE variables
Calculated - Total score based on an 8-item questionnaires ranking likelihood of dozing off Johns MW 1991 (PubMed ID: 1798888). Scale 0-3 for individual items; 0 to 24 for overall score.