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Two‐way contingency table with arousal counts across each sleep stage for good sleepers (n = 19) and the insomnia group (n = 23)
| Sleep stage | Good sleepers | Insomnia group | ||
|---|---|---|---|---|
| Count | Mean (SD) | Count | Mean (SD) | |
| Stage 1 | 146 | 8.1 (4.9) | 155 | 7.1 (5.4) |
| Stage 2 | 607 | 31.9 (8.2) | 926 | 40.3 (19.7) |
| Stage 3 | 75 | 4.4 (2.9) | 113 | 4.9 (3.5) |
| Stage 4 | 63 | 3.5 (3.1) | 92 | 4.0 (2.7) |
| REM | 343 | 18.1 (12.8) | 390 | 17.0 (9.7) |
