Distribution of item scores and SI of HFS-7 by severity
| HFS-7 item/SI | Severity* | n | Median | Min | Max | 25th percentile | 75th percentile |
|---|---|---|---|---|---|---|---|
| *Severity grading: 0, normal; 1, slight disability; 2, moderate disability, no functional impairment; 3, moderate disability, functional impairment; 4, severely incapacitated. | |||||||
| Only two HFS patients had slight disability and none were normal. Data for these two grades of severity are not displayed in the table. The sample size was less for item 1 because non-drivers and those who did not drive during the 2–3 weeks prior to answering the questionnaire, did not respond to the question. | |||||||
| HFS-7 SI | 2 | 15 | 28.6 | 10.7 | 71.4 | 21.4 | 42.9 |
| 3 | 54 | 42.9 | 0.0 | 100.0 | 21.4 | 60.7 | |
| 4 | 14 | 64.3 | 10.7 | 85.7 | 43.8 | 75.9 | |
| 1. Had difficulty driving | 2 | 4 | 0 | 0 | 0 | 0 | 0 |
| 3 | 29 | 0 | 0 | 4.0 | 0 | 2.0 | |
| 4 | 8 | 0 | 0 | 4.0 | 0 | 2.5 | |
| 2. Had difficulty reading | 2 | 15 | 2.0 | 0 | 4.0 | 1.0 | 2.0 |
| 3 | 54 | 2.0 | 0 | 4.0 | 1.0 | 2.5 | |
| 4 | 14 | 3.0 | 0 | 4.0 | 2.0 | 4.0 | |
| 3. Had difficulty watching television/movie | 2 | 15 | 1.0 | 0 | 3.0 | 0 | 2.0 |
| 3 | 54 | 2.0 | 0 | 4.0 | 1.0 | 2.0 | |
| 4 | 14 | 3.0 | 0 | 4.0 | 2.0 | 3.3 | |
| 4. Felt depressed | 2 | 15 | 1.0 | 0 | 4.0 | 0 | 2.0 |
| 3 | 54 | 2.0 | 0 | 4.0 | 0 | 2.0 | |
| 4 | 14 | 0 | 0 | 4.0 | 0 | 3.0 | |
| 5. Avoided eye contact | 2 | 15 | 2.0 | 0 | 4.0 | 1.0 | 2.0 |
| 3 | 54 | 2.0 | 0 | 4.0 | 1.0 | 3.5 | |
| 4 | 14 | 4.0 | 0 | 4.0 | 2.8 | 4.0 | |
| 6. Felt embarrassed about having the condition | 2 | 15 | 2.0 | 0 | 4.0 | 2.0 | 2.0 |
| 3 | 54 | 2.0 | 0 | 4.0 | 1.0 | 3.0 | |
| 4 | 14 | 4.0 | 0 | 4.0 | 2.8 | 4.0 | |
| 7. Felt worried about other’s reactions to you | 2 | 15 | 2.0 | 0 | 4.0 | 2.0 | 2.0 |
| 3 | 54 | 2.0 | 0 | 4.0 | 1.0 | 3.0 | |
| 4 | 14 | 3.5 | 0 | 4.0 | 2.0 | 4.0 | |