C99553Level 5

Sleep Study

**Semantic type:** Research Activity

**Definition:** Measurement of physiologic parameters during sleep.

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C154867Sleep Onset Latency

C154868N1 Sleep Phase Duration

C154869N2 Sleep Phase Duration

C154870N3 Sleep Phase Duration

C154871Rapid Eye Movement Sleep Phase Duration

C154872Rapid Eye Movement Sleep Phase Latency

C156552Total Sleep Time

C156553Sleep Efficiency

C156554Wake After Sleep Onset

C156555N1 Sleep to Total Sleep Time Ratio Measurement

C156556N2 Sleep to Total Sleep Time Ratio Measurement

C156557N3 Sleep to Total Sleep Time Ratio Measurement

C156558REM to Total Sleep Time Ratio Measurement

C215118Sleep-Related Breathing Test

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