Table 3.
Differences Subscale Scores for the General Sleep Disturbance Scale at Enrollment
| Subscales for the General Sleep Disturbance Scale a | No Anxiety + Low Sleep Disturbance (0) 59.7% (n=794) |
Moderate Anxiety + High Sleep Disturbance (1) 32.5% (n=433) |
High Anxiety + Very High Sleep Disturbance (2) 7.8% (n=104) |
Statistics |
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | ||
| Quality of sleep (≥3) | 2.8 (1.7) | 3.9 (1.6) | 4.8 (1.6) | F=104.72, p<.001 0 < 1 < 2 |
| Quantity of sleep (≥3) | 4.5 (1.5) | 4.7 (1.6) | 5.0 (1.9) | F=6.87, p=.001 0 < 1 and 2 |
| Sleep onset latency (≥3) | 2.2 (2.1) | 3.2 (2.2) | 4.4 (2.3) | F=60.06, p<.001 0 < 1 < 2 |
| Mid-sleep awakenings (≥3) | 4.7 (2.3) | 5.1 (2.0) | 5.5 (1.9) | F=8.13, p<.001 0 < 1 and 2 |
| Early awakenings (≥3) | 3.1 (2.5) | 4.1 (2.3) | 5.2 (2.0) | F=50.45, p<.001 0 < 1 < 2 |
| Medications for sleep (≥3) | 0.5 (0.7) | 0.8 (0.8) | 0.9 (0.9) | F=28.54, p<.001 0 < 1 and 2 |
| Excessive daytime sleepiness (≥3) | 2.1 (1.3) | 3.3 (1.3) | 4.0 (1.4) | F=173.30, p<.001 0 < 1 < 2 |
| Total GSDS Score (≥43) | 45.1 (18.3) | 61.2 (17.2) | 72.9 (17.5) | F=180.40, p<.001 0 < 1 < 2 |
Abbreviations: GSDS, General Sleep Disturbance Scale; SD, standard deviation.
a
Numbers in parentheses indicate clinically meaningful cutoff scores