title: Converting Scoliosis Research Society-24 to Scoliosis Research Society-22r in a Surgical-Range, Medical/Interventional Adolescent Idiopathic Scoliosis Patient Cohort.
abstract: METHODS
  Prospective questionnaire administration study.
  
  
  OBJECTIVE
  To assess the ability to translate total and domain scores from Scoliosis Research Society (SRS)-24 to SRS-22r in a surgical-range, medical/interventional adolescent idiopathic scoliosis (AIS) patient population.
  
  
  BACKGROUND
  Conversion of SRS-24 to SRS-22r is demonstrated in an operative cohort of patients with AIS, but not in a medical/interventional patient population.
  
  
  METHODS
  We simultaneously administered SRS-24 and SRS-22r questionnaires to 75 surgical-range, medical/interventional AIS patients and compared them. We performed analysis by regression modeling to produce conversion equations from SRS-24 to SRS-22r.
  
  
  RESULTS
  The total SRS-24 score for these medical/interventional AIS patients was 92.5 ± 9.45 (mean, 3.9 ± 0.39), and the total SRS-22r score was 93.5 ± 9.63 (mean, 4.3 ± 0.44). The correlation between these 2 groups was fair (R2= 0.77) and improved to good when mental health or recall questions were removed. The correlation was also fair for total pain domains (R2= 0.73). However, there was poor correlation for general self-image (R2= 0.6) and unacceptable for post-treatment self-image (R2= 0.01), general function (R2= 0.52), activity function (R2= 0.56), and satisfaction (R2= 0.53). Compared with a published population of operative AIS patients, R2values for total SRS-24 scores, pain, general self-image, activity function, and satisfaction were similar (p > .05). The R2values for general function and combined general and activity function were significantly different between the operative and medical/interventional cohorts.
  
  
  CONCLUSIONS
  Scoliosis Research Society-24 can be converted to SRS-22r scores with fair accuracy in the surgical-range, medical/interventional AIS patient population for total score, and total pain domains. The SRS-24 translates unacceptably to the SRS-22r in self-image, function, and satisfaction domains. The SRS-24 to SRS-22r conversion equations are similar to operative AIS patients, except for the function domain. Caution should be used when interpreting results based on translation of SRS-24 to SRS-22r values.
authors.affiliation: Department of Orthopaedics, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh, Department of Orthopaedics, 4401 Penn Avenue, Fourth Floor, Pittsburgh, PA 15224, USA.
authors.forename: Antonia F
authors.initials: AF
authors.lastname: Chen
authors.affiliation: Department of Biostatistics, A414 Crabtree Hall, 130 DeSoto Street, Pittsburgh, PA 15261, USA.
authors.forename: Wenzhu
authors.initials: W
authors.lastname: Bi
authors.affiliation: Department of Biostatistics, A414 Crabtree Hall, 130 DeSoto Street, Pittsburgh, PA 15261, USA.
authors.forename: Dilrukshika
authors.initials: D
authors.lastname: Singhabahu
authors.affiliation: Department of Orthopaedics, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh, Department of Orthopaedics, 4401 Penn Avenue, Fourth Floor, Pittsburgh, PA 15224, USA.
authors.forename: Joanne
authors.initials: J
authors.lastname: Londino
authors.affiliation: Department of Orthopaedics, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh, Department of Orthopaedics, 4401 Penn Avenue, Fourth Floor, Pittsburgh, PA 15224, USA.
authors.forename: Justin
authors.initials: J
authors.lastname: Hohl
authors.affiliation: Department of Orthopaedics, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh, Department of Orthopaedics, 4401 Penn Avenue, Fourth Floor, Pittsburgh, PA 15224, USA.
authors.forename: Maeve
authors.initials: M
authors.lastname: Ward
authors.affiliation: Department of Orthopaedics, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh, Department of Orthopaedics, 4401 Penn Avenue, Fourth Floor, Pittsburgh, PA 15224, USA. Electronic address: wardtw@upmc.edu.
authors.forename: W Timothy
authors.initials: WT
authors.lastname: Ward
keywords: Adolescent idiopathic scoliosis; Converting equations; Medical/interventional; SRS-24; Scoliosis Research Society (SRS)-22r