TY - JOUR
T1 - Discriminative properties of the spinal appearance questionnaire compared with the scoliosis research society-22 revised
AU - Carreon, Leah Y.
AU - Sanders, James O.
AU - Diab, Mohammad
AU - Polly, David W.
AU - Diamond, Beverly E.
AU - Sucato, Daniel J.
N1 - Funding Information:
Author disclosures: LYC (funds provided to database company by Medtronic and Nuvasive ; board membership with Spine, The Spine Journal, University of Louisville IRB, Medtronic; employment with Norton Healthcare; grants from Norton Healthcare, Orthopedic Educational and Research Fund ; travel/accommodations/meeting expenses from Orthopedic Educational and Research Fund , National Institutes of Health, University of Louisville IRB, Department of Defense, Association for Collaborative Spine Research ; honoraria from Medtronic and National Institutes of Health); JOS (grants from POSNA , CWSDSG ; payment for development of educational presentations from DePuy; stock/stock options from Abbot Labs, Hospira, Abbvie, GE, Biomedical Enterprises; travel/accommodations/meeting expenses from DePuy); MD (funds provided to database company by Medtronic and Nuvasive ; consultancy for Fixes 4 Kids; grants from OREF ; stock/stock options from Fixes for Kids); DWP (consultancy for Medtronic; funds provided to database company by Medtronic and Nuvasive ; grants from Department of Defense, Orthopedic Research and Education Fund, Chest Wall and Spine Deformity Foundation, Minnesota Medical Foundation ); BED (funds provided to database company by Medtronic and Nuvasive ); DJS (funds provided to database company by Medtronic and Nuvasive ; board membership with Scoliosis Research Society).
PY - 2013/9
Y1 - 2013/9
N2 - Study Design: Longitudinal cohort. Objectives: To determine the responsiveness of the Spinal Appearance Questionnaire (SAQ) in patients with adolescent idiopathic scoliosis (AIS) undergoing surgical correction of the deformity. Summary of Background Data: The SAQ has been found to be a valid and reliable measure in patients with AIS. A recently published factor analysis and scoring system has been shown to be applicable to all Lenke types and had greater correlation to the curve magnitude than the Scoliosis Research Society (SRS) Appearance and Total score. Methods: From a prospective multicenter database, 126 AIS patients who underwent correction of the spinal deformity with complete SAQ and SRS-22 Revised data at baseline and 2-year follow-up were identified. Discriminative properties of the SAQ domains (Expectations, Appearance, and Total) and SRS domains (Appearance, Activity, Pain, Mental, Satisfaction, and Total) were compared by computing the effect size (ES) and the standardized response mean (SRM). Results: The SAQ Total had the largest ES (1.8) and SRM (1.5). This was followed by the SAQ Appearance, with an ES of 1.7 and SRM of 1.4; and the SAQ Expectations, with an ES of 1.5 and SRM of 1.2. Among the different SRS domains, only the Appearance (ES = 1.2, SRM = 1.1), Satisfaction (ES = 0.8, SRM = 0.6), and Total scores (ES = 0.8, SRM = 0.9) had effect sizes that were considered large. The SRS Mental domain had a moderate effect size (ES = 0.3, SRM = 0.3), whereas the Activity (ES = 0.0, SRM = 0.0) and Pain (ES = 0.2, SRM = 0.2) domains had small effect sizes. Conclusions: The SAQ is sensitive and responsive to change, as evidenced by the large effect size for both domain and the Total score. The effect sizes are larger than those for any of the SRS domains, including Appearance and Total scores.
AB - Study Design: Longitudinal cohort. Objectives: To determine the responsiveness of the Spinal Appearance Questionnaire (SAQ) in patients with adolescent idiopathic scoliosis (AIS) undergoing surgical correction of the deformity. Summary of Background Data: The SAQ has been found to be a valid and reliable measure in patients with AIS. A recently published factor analysis and scoring system has been shown to be applicable to all Lenke types and had greater correlation to the curve magnitude than the Scoliosis Research Society (SRS) Appearance and Total score. Methods: From a prospective multicenter database, 126 AIS patients who underwent correction of the spinal deformity with complete SAQ and SRS-22 Revised data at baseline and 2-year follow-up were identified. Discriminative properties of the SAQ domains (Expectations, Appearance, and Total) and SRS domains (Appearance, Activity, Pain, Mental, Satisfaction, and Total) were compared by computing the effect size (ES) and the standardized response mean (SRM). Results: The SAQ Total had the largest ES (1.8) and SRM (1.5). This was followed by the SAQ Appearance, with an ES of 1.7 and SRM of 1.4; and the SAQ Expectations, with an ES of 1.5 and SRM of 1.2. Among the different SRS domains, only the Appearance (ES = 1.2, SRM = 1.1), Satisfaction (ES = 0.8, SRM = 0.6), and Total scores (ES = 0.8, SRM = 0.9) had effect sizes that were considered large. The SRS Mental domain had a moderate effect size (ES = 0.3, SRM = 0.3), whereas the Activity (ES = 0.0, SRM = 0.0) and Pain (ES = 0.2, SRM = 0.2) domains had small effect sizes. Conclusions: The SAQ is sensitive and responsive to change, as evidenced by the large effect size for both domain and the Total score. The effect sizes are larger than those for any of the SRS domains, including Appearance and Total scores.
KW - Adolescent idiopathic scoliosis
KW - Discriminative properties
KW - Psychometrics
KW - Responsiveness to change
KW - Spinal Appearance Questionnaire
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U2 - 10.1016/j.jspd.2013.06.001
DO - 10.1016/j.jspd.2013.06.001
M3 - Article
C2 - 27927388
AN - SCOPUS:84884652953
SN - 2212-134X
VL - 1
SP - 328
EP - 338
JO - Spine deformity
JF - Spine deformity
IS - 5
ER -