The reliability and validity of the Chinese version of a quality of life questionnaire for traumatic brain injury / 中华物理医学与康复杂志

ABSTRACT

Objective To study the reliability and validity of the Chinese version of an instrument for assessing quality of life after traumatic brain injury (QOLIBRI).Methods A total of 49 patients with traumatic brain injury were studied.The test-retest reliability of the instrument was examined by computing intraclass correlation coefficients and its internal consistency was examined using Cronbach's α statistic.Its criterion-related validity was examined using reference instruments such as the HADS,SF-36 and Glasgow outcome scale-extended (GOSE).The Kaiser-Meyer-Olkin measure and Barlett's test of sphericity as well as factor analysis were used for construct validity testing.Results The test-retest reliability of the QOLIBRI subscales was stable,with Pearson's correlation coefficients ranging from 0.906 to 0.987.Good internal consistency was demonstrated by the Cronbach's αs ranging from 0.498 to 0.921.The Kaiser-Meyer-Olkin measure of QOLIBRI was 0.813.Factor analysis yielded four factors,and their cumulative contribution was 68.4％.The QOLIBRI scores were highly negatively correlated with HADS scores,moderately correlated with GOSE scores and positively correlated to SF-36 scores.Conclusions The Chinese QOLIBRI instrument has good reliability and validity.