de Boer M R, Terwee C B, de Vet H C W, Moll A C, Völker-Dieben H J M, van Rens G H M B
Department of Ophthalmology, VU University Medical Center, Amsterdam, The Netherlands.
Qual Life Res. 2006 Mar;15(2):233-48. doi: 10.1007/s11136-005-1524-9.
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.
低视力生活质量（LVQOL）问卷和视力相关生活质量核心量表（VCM1）是近年来开发的众多视力相关生活质量（QOL）问卷中的两种。尽管LVQOL和VCM1的心理测量特性与其他视力相关QOL问卷相比表现良好，但尚未（充分）评估其结构效度和纵向效度。本研究的目的是通过检验关于这些问卷与其他测量指标关系的特定预先设定假设，来考察这些问卷的横断面和纵向结构效度。对于LVQOL，在视力子量表基本方面，被驳斥的关于横断面结构效度的假设比例为22%，在活动能力子量表中为50%，在适应子量表中为39%，在阅读和精细工作子量表中为17%。对于VCM1，这一比例为57%。对于纵向结构效度，LVQOL各子量表被驳斥的假设比例在33%至75%之间，VCM1为50%。总之，LVQOL各子量表的横断面结构效度令人满意，但VCM1的似乎较差。此外，这些量表的纵向效度为差到中等。
