Gutman G, et al. – This research was carried out to analyze the measurement properties of the Scoliosis Research Society Outcomes Questionnaire French–Canadian version (SRS–22fv). The authors illustrated that the SRS–22fv might be useful in distinguishing between healthy and spondylolisthesis subjects. Moreover, it could be used in spondylolisthesis patients to assess health–related quality of life.

Methods

• In this study, the SRS–22fv was tested in 479 subjects (272 patients with spondylolisthesis, 143 with AIS, and 64 controls) at a single institution.
• Its reliability was measured using the coefficient of internal consistency, concurrent validity by the short form–12 (SF–12v2 French version).
• The discriminant validity was evaluated with multivariate analysis of variance, analysis of covariance, and multivariate linear regression.

Results

• The SRS–22fv displayed a good global internal consistency (spondylolisthesis: Cronbach α = 0.91, AIS: 0.86, and controls: 0.78) in all its domains for spondylolisthesis patients.
• It showed a factorial structure consistent with the original questionnaire, with 60% of explained variance under four factors.
• Moderate to high correlation coefficients were found for specifically corresponding domains between SRS–22fv and SF–12v2.
• Investigations showed that boys had higher scores than do girls, scores worsened with increasing age and body mass index.
• Analysis of covariance showed statistically significant differences between patients with spondylolisthesis, patients with AIS, and controls when controlling for age, sex, body mass index, pain, function, and self–image scores.
• In the spondylolisthesis group, scores on all domains and mean total scores were significantly lower in surgical candidates and in patients with high–grade spondylolisthesis.
• Low to moderate ceiling effects were displayed in function (1.1%), self–image (10.7%), and pain (13.6%).