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The Pittsburgh Sleep Quality Index comparison between the two groups.
| PSQI Score | Vitamin E (N = 80) | Placebo (N = 80) | p-Value |
|---|---|---|---|
| Before | 13 (6, 20) | 11 (6, 20) | 0.019 |
| After | 6 (1, 18) | 9 (1, 19) | 0.012 |
| Improvement of PSQI | 5 (−6, 14) | 1 (−5, 13) | <0.001 |
Notes: Data expressed as median (range).
