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A Study of Insomnia and Sleep Loss
Author Bio
Part I
Matching Sleep Variables
Research Questions
Environmental Conditioning
Matching Perception and Physiology
Currently selected section: PSG and Self Report Data Mismatch
Questions for Further Research
Part III


Chapter 15: Challenges to the Study of Insomnia and Sleep Loss: Data Mismatch Between PSG Data and Self Reports
        

Consider another set of observations to determine whether poor PSG sleep predicts the symptom of insomnia. Rosa and Bonnet (2000) conducted a laboratory study on 177 people, including 121 with insomnia (self-report) and 56 without insomnia. They recorded 3 consecutive nights of PSG sleep. Initially, they determined whether the number of nights of poor PSG sleep (< 85% sleep efficiency) distinguished those who did and did not report insomnia. The data are as follows:

Figure 2.5.1: Number of Nights of Poor PSG Sleep (<85% SE) in Subjects With and Without Insomnia
Graphic depiction of number of nights of poor sleep, where on night zero approximately 50% of subjects reported Insomnia and No Insomnia. On night one approximately 30% of subjects reported Insomnia and No Insomnia, and on night two, approximately 25% of subjects reported Insomnia and No Insomnia, described in text.

Adapted from Rosa RR and Bonnett MH. Reported chronic insomnia is independent of poor sleep as measured by electroencephalography. Psychosomatic Medicine, 2002; 62:474-482.

Question 2.5.1

In the laboratory, people with insomnia are more likely to exhibit poor PSG sleep than people without insomnia.
Selection A
True
Selection B
False

Question 2.5.2

These data show that there are people reporting good sleep who actually have low sleep efficiency in the laboratory.
Selection A
True
Selection B
False

 

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