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Table 1
Definitions of HUI3 disability categories based on global utility scores
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| Category | Score range | Description |
|---|---|---|
| Category 1: No disability | 1.00 | No disability or perfect health in which all attributes (dimensions or domains) of health status are at their highest functional level. |
| Category 2: Mild disability | 0.89 to 0.99 | Mild disability in which at least one attribute is at a reduced level of function that can be readily corrected and/or does not prevent any activities. |
| Category 3: Moderate disability | 0.70 to 0.88 | Moderate disability in which at least one attribute is at a reduced level of function that cannot be corrected and/or prevents some activities. |
| Category 4: Severe disability | Less than 0.70 | Severe disability in which at least one attribute is at a reduced level of function that cannot be corrected and prevents many activities. |
| Notes: Moderate disability may also describe states with three attributes at reduced (level 2) function. Severe disability may be represented by states with four attributes at reduced (level 2) function. Source: Adapted with permission from: Feeny D, Furlong W. Health Utilities Index Mark 2 (HUI2) and Mark 3 (HUI3) disability categories for single and multi-attribute utility scores.15 Table source: Statistics Canada, 2009, "Validation of disability categories derived from Health Utilities Index Mark 3 scores", Health Reports, Vol. 20, No. 2, catalogue number 82-003-X. |
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