Parameters in revised version:
(1) domain score (10 items)
(2) items most important during the preceding week (out of 10 symptoms)
(3) general questions for global assessment (3 items)
Changes from original form: 2 domains that correlated poorly were removed.
Responses for domain and general items were scored from 0 (poor) to 100 (good).
composite domain score =
= SUM(points for domains) / 10 =
= MEAN(points for domains)
composite global score =
= SUM(points for global items) / 3 =
= MEAN(points for global items)
Interpretation:
• minimum composite score: 0
• maximum composite score: 100
• The higher the composite score the better the quality of life.
Performance:
• The revised format has an internal consistency score of 0.85.
