Factor analysis of the SRS-22 outcome assessment instrument in patients with adult spinal deformity

Mannion A. F. , Elfering A., Bago J., Pellise F., Vila-Casademunt A., Richner-Wunderlin S., ...More

European Spine Journal, vol.27, no.3, pp.685-699, 2018 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 3
  • Publication Date: 2018
  • Doi Number: 10.1007/s00586-017-5279-0
  • Title of Journal : European Spine Journal
  • Page Numbers: pp.685-699


Designed for patients with adolescent idiopathic scoliosis, the SRS-22 is now widely used as an outcome instrument in patients with adult spinal deformity (ASD). No studies have confirmed the four-factor structure (pain, function, self-image, mental health) of the SRS-22 in ASD and under different contexts. Factorial invariance of an instrument over time and in different languages is essential to allow for precise interpretations of treatment success and comparisons across studies. This study sought to evaluate the invariance of the SRS-22 structure across different languages and sub-groups of ASD patients.