Research Article
Validation of the Arabic Version of the Epworth Sleepiness Scale among the Yemeni Medical Students
Table 2
Principal component analysis of ESS.
| No. | Item | Correlated item-total correlation | Component 1 | Component 2 |
| 1 | Sitting and reading | 0.217 | 0.456 | | 2 | Watching TV | 0.561 | 0.861 | | 3 | Sitting, inactive in a public place (e.g., a theatre or a meeting) | 0.534 | 0.819 | | 4 | As passenger in a car for an hour without a break | 0.421 | | 0.591 | 5 | Lying down to rest in the afternoon when circumstances permit | 0.400 | | 0.566 | 6 | Sitting and talking to someone | 0.239 | | 0.462 | 7 | Sitting quietly after lunch | 0.502 | | 0.698 | 8 | In a car, while stopped for a few minutes in traffic variance explained | 0.421 | | 0.803 | Cronbach’s alpha () | 0.65 | 0.65 | 0.62 |
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