Abstract
Psychosocial, emotional, and physical problems can emerge after traumatic brain injury (TBI), potentially impacting health-related quality of life (HRQoL). Until now, however, neither the discriminatory power of disease-specific (QOLIBRI) and generic (SF-36) HRQoL nor their correlates have been compared in detail. These aspects as well as some psychometric item characteristics were studied in a sample of 795 TBI survivors. The Shannon H' index absolute informativity, as an indicator of an instrument's power to differentiate between individuals within a specific group or health state, was investigated. Psychometric performance of the two instruments was predominantly good, generally higher, and more homogenous for the QOLIBRI than for the SF-36 subscales. Notably, the SF-36 "Role Physical," " Role Emotional," and "Social Functioning" subscales showed less satisfactory discriminatory power than all other dimensions or the sum scores of both instruments. The absolute informativity of disease-specific as well as generic HRQoL instruments concerning the different groups defined by different correlates differed significantly. When the focus is on how a certain subscale or sum score differentiates between individuals in one specific dimension/health state, the QOLIBRI can be recommended as the preferable instrument.
Original language | English |
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Article number | 7928014 |
Number of pages | 14 |
Journal | Behavioural Neurology |
Volume | 2016 |
DOIs | |
Publication status | Published - 1 Jan 2016 |
Keywords
- TRAUMATIC BRAIN-INJURY
- HOSPITAL ANXIETY
- ITEM BANKS
- 1ST YEAR
- DEPRESSION
- MODERATE
- MILD
- SCALE
- INDIVIDUALS
- EQ-5D