Construction and validation of the scoliosis quality of life index in adolescent idiopathic scoliosis
Construction and validation of the scoliosis quality of life index in adolescent idiopathic scoliosis
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DOI：
10.1097/01.brs.0000163885.12834.ca
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发表时间：
2005-06-01
期刊：
影响因子：
3
通讯作者：
Wright, JG
中科院分区：
文献类型：
--
作者：
Feise, RJ;Donaldson, S;Wright, JG
Study Design. A prospective cross- sectional design was used to evaluate the Scoliosis Quality of Life Index ( SQLI). SQLI is a 22- item self- reporting health- related quality- of- life questionnaire for idiopathic scoliosis patients.Objective. The goal of this study was to evaluate the psychometric qualities of SQLI.Summary of Background Data. SQLI, a modification of the Scoliosis Research Society- 22 ( SRS- 22) questionnaire, is intended to be more applicable to patients with adolescent idiopathic scoliosis ( AIS) between 10 and 18 years of age.Methods. Eighty- four subjects with a mean age of 14.9 years participated. We determined reliability, validity, distribution of scores, and clinical utility of SQLI in a hospital setting. Seventy patients were AIS patients ( 16 postsurgical, 30 braced, 24 unbraced) with a mean Cobb angle of 30.7 degrees, and 14 patients were sibling controls.Results. Reliability: Intraclass correlation coefficient for test- retest reliability of the global index was very good ( ICC 2,1 = 0.80); Spearman's rho correlations between items and domains was 0.39 to 0.89 and between domains and global index was 0.55 to 0.78; Cronbach's alpha scores were more than 0.80 ( 0.82 - 0.89). Validity: construct validity was established by correlations between SQLI's global index and Quality of Life Profile for Spine Deformities ( QLPSD) global index ( Spearman's rho, 0.79) and between SQLI domains and QLPSD domains ( 0.46- 0.81); discriminate validity was established by SQLI's global index successfully partitioned controls and AIS subjects ( Kruskal- Wallis test, P = 0.0013). Time required by the patient averaged 2.5 minutes per administration.Conclusions. SQLI is reliable and valid and demonstrates satisfactory distribution of scores. SQLI is a promising instrument in the assessment of AIS patients.
