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Sleep architecture (n = 480)
| Mean | SD | |
| Sleep Time | 487 minutes | 79.7 minutes |
| Sleep Efficiency | 89.8% | 5.8% |
| Stage 1 (%) | 4.6% | 3.3% |
| Stage 2 (%) | 52.0% | 6.1% |
| Stage 3/4 (%) | 21.9% | 6.1% |
| REM (%) | 21.5% | 5.0% |
| Sleep Latency | 18.5 minutes | 21 minutes |
| REM Latency | 130.9 minutes | 50.8 minutes |
