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Table 6 Sample utility computation

From: Mapping of the Insomnia Severity Index and other sleep measures to EuroQol EQ-5D health state utilities

Model

EQ-5D utility

Computation

I

0.772

≈1-exp(-2.45614+0+0.14380-0.04075+0.13552+0.41963+0.24329+0.0766)

II

0.748

≈1-exp(-2.34909+ 0.06077*16)

III

0.723

≈1-exp(-2.0259+ 0.74122)

IV

0.690

≈1-exp(-0.99338-0.00079*36-0.03204*1-0.22818*8.58+0.0133*8.582+0.42901*1-0.0314*1+0.00112*5+0.02498*8+0.05213*5)

  1. Sample scenario:
  2. Assume a 36-year old female had ISI scores of 0, 3, 1, 4, 3, 3, and 2 on the 7 items, respectively, resulting in an ISI summary score of 16 and a ISI class of 3, in combination with a report of 8.58 hours of sleep, ≥ 1 comorbidity, 1 on overall sleep quality, 5 minutes of sleep onset latency during previous night, 8 on next day sleepiness, and 5 wake up times.
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Health and Quality of Life Outcomes

ISSN: 1477-7525

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