Abstract
The Low Vision Quality of Life (LVQOL) questionnaire and the Vision-related Quality of Life Core Measure (VCM1) are two of the many vision-related quality of life (QOL) questionnaires that have been developed in recent years. Although psychometric properties of the LVQOL and VCM1 compare well with other vision-related QOL questionnaires, construct and longitudinal validity have not been assessed (adequately). The purpose of this study was to examine the cross-sectional and longitudinal construct validity of these questionnaires by testing specific pre-specified hypotheses about the relations of these questionnaires with other measures. The percentage of hypotheses regarding the cross-sectional construct validity that were refuted for the LVQOL was 22% for the basic aspects of vision subscale, 50% for the mobility subscale, 39% for the adjustment subscale and 17% for the reading and fine work subscale. For the VCM1 this percentage was 57%. For the longitudinal construct validity the percentage of hypotheses that were refuted ranged from 33 to 75% for the LVQOL subscales and was 50% for the VCM1. In conclusion, cross-sectional construct validity was satisfactory for the LVQOL subscales, but seemed poor for the VCM1. In addition, the longitudinal validity of these scales was poor to moderate.
| Original language | English |
|---|---|
| Pages (from-to) | 233-48 |
| Number of pages | 16 |
| Journal | Quality of Life Research |
| Volume | 15 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Mar 2006 |
Keywords
- Aged
- Aged, 80 and over
- Cross-Sectional Studies
- Female
- Humans
- Male
- Netherlands
- Psychometrics
- Quality of Life
- Surveys and Questionnaires
- Journal Article
- Research Support, Non-U.S. Gov't
- Validation Studies
