Domains:
(1) emotional: 13 items
(2) functional: 12 items
|
Response
|
Points
|
|
yes
|
4
|
|
sometimes
|
2
|
|
no
|
0
|
emotional subscale =
= SUM(points for items 1, 3, 5, 6, 8, 9, 10, 11, 12, 14, 20, 22, 23)
functional subscale =
= SUM(points for items 2, 4, 7, 13, 15, 16, 17, 18, 19, 21, 24, 25)
total score =
= SUM(points for all 25 items)
Interpretation:
• minimum score: 0
• maximum emotional subscale: 52
• maximal functional subscale: 48
• maximum score: 100
• The higher the score, the greater the disability caused by the headache.
• A decrease in the total HDI of >= 29 points as a consequence to a management strategy is considered a significant improvement.
Limitation:
• A person with a low total HDI (< 29 points) would not be able to meet the criteria for significant improvement.
Performance:
• The 1 week test-retest reliability of the total score was 0.76; for 6 week test-retest reliability it was 0.83.
• The Cronbach alpha item to total correlation is given in the table on page 839.
