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Area under the curve of the four measures
| Test | AUCa | 95% CI |
|---|---|---|
| Pittsburgh questionnaireb |
0.79 |
0.68 to 0.87 |
| Insomnia indexc |
0.78 |
0.67 to 0.86 |
| Roland itemd |
0.64 |
0.53 to 0.75 |
| Epworth scalee | 0.53 | 0.41 to 0.64 |
a Area under the curve, b Pittsburgh sleep quality index, c Insomnia severity index, d Sleep item of the Roland and Morris disability questionnaire, e Epworth sleepiness scale.
