Sleep medicine
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Randomized Controlled Trial
Psychometric evaluation and tests of validity of the Medical Outcomes Study 12-item Sleep Scale (MOS sleep).
To validate the psychometric properties of the Medical Outcomes Study (MOS) Sleep Scale in subjects with restless legs syndrome (RLS). ⋯ The MOS Sleep Scale is a reliable, valid tool for assessing changes in the sleep of subjects with moderate-to-severe primary RLS. The somnolence domain failed to relate to clinical severity of RLS, indicating a possible sleep-wake relationship unique to RLS. Use of this scale to evaluate other conditions causing sleep disturbance is supported.