Table 6.
Distribution of responses on the Insomnia Severity Index.
| Insomnia Severity Index (ISI) | Frequency | Percentages | |
|---|---|---|---|
| Difficulty falling asleep | None | 3548 | 35.2 |
| Mild | 1945 | 19.3 | |
| Moderate | 2404 | 23.9 | |
| Severe | 1247 | 12.4 | |
| Very severe | 923 | 9.2 | |
| Difficulty staying asleep | None | 4441 | 44.4 |
| Mild | – | – | |
| Moderate | 4370 | 43.4 | |
| Severe | 948 | 9.4 | |
| Very severe | 308 | 3.1 | |
| Problems waking up too early | None | 5607 | 55.7 |
| Mild | 1425 | 14.2 | |
| Moderate | 1968 | 19.5 | |
| Severe | 765 | 7.6 | |
| Very severe | 302 | 3.0 | |
| How SATISFIED/DISSATISFIED are you with your CURRENT sleep pattern? | Very satisfied | 1759 | 17.5 |
| Satisfied | 3622 | 36.0 | |
| Moderately satisfied | 2819 | 28.0 | |
| Dissatisfied | 1294 | 12.9 | |
| Very dissatisfied | 573 | 5.7 | |
| How NOTICEABLE to others do you think your sleep problem is in terms of impairing the quality of your life? | Not at all noticeable | 5769 | 57.3 |
| A little | 1533 | 15.2 | |
| Somewhat | 1980 | 19.7 | |
| Much | 472 | 4.7 | |
| Very much noticeable | 313 | 3.1 | |
| How WORRIED/DISTRESSED are you about your current sleep problem? | Not at all worried | 5300 | 52.6 |
| A little | 1989 | 19.8 | |
| Somewhat | 1620 | 16.1 | |
| Much | 803 | 8.0 | |
| Very much worried | 355 | 3.5 | |
| To what extent do you consider your sleep problem to INTERFERE with your daily functioning (e.g., daytime fatigue, mood, ability to function at work/daily chores, concentration, memory, mood, etc.) CURRENTLY? | Not at all interfering | 4443 | 44.1 |
| A little | 1929 | 19.2 | |
| Somewhat | 2387 | 23.7 | |
| Much | 748 | 7.4 | |
| Very much interfering | 560 | 5.6 | |