title: Reliability of the revised Scoliosis Research Society-22 and Oswestry Disability Index (ODI) questionnaires in adult spinal deformity when administered by telephone.
abstract: The non-response rates are as high as 20% to 50% after 5 years of follow-up in adult spinal deformity (ASD) surgery. Minimizing loss to follow-up is essential to protect the quality of data in long-term studies. Phone and internet administration of outcomes instruments has grown in popularity and has been found to not only provide a convenient way of collecting data, but also show improved response rates.
  
  
  
  The study aimed to examine the reliability of the revised Scoliosis Research Society-22 (SRS-22r) and the Oswestry Disability Index (ODI) questionnaires in ASD patients when administered by telephone.
  
  
  
  This is a single-center, randomized crossover phone validation of ASD patients.
  
  
  
  The study included ASD patients presenting to a tertiary spine care center.
  
  
  
  The outcome measures were ODI and SRS-22r.
  
  
  
  Forty-nine patients (mean age: 55.7 years) with ASD were randomized in a 1:1 ratio to either phone completion of the SRS-22r and ODI followed by in-office completion, or to in-office completion followed by phone completion. An interval of 2 to 4 weeks was placed between administrations of each version. A paired t test was used to assess the difference between the written and phone versions, and intraclass correlation coefficients were used to assess homogeneity. Finally, goodness-of-fit testing was used to assess version preference.
  
  
  
  There was no significant difference between the phone and in-office versions of the SRS-22r (p=.174) or the ODI (p=.320). The intraclass correlation coefficients of the SRS-22r and ODI were 0.91 and 0.86, respectively. Completion over the phone was the most popular option (57% preferred phone, 29% preferred in-office, and 14% had no preference).
  
  
  
  Phone administration of the SRS-22r and ODI to ASD patients provides a convenient and reliable tool for reducing loss of follow-up data.
authors.affiliation: Department of Orthopaedic Surgery, Washington University School of Medicine, 660 South Euclid Ave, Box 8233, St. Louis, MO, USA.
authors.forename: Steven L
authors.initials: SL
authors.lastname: Bokshan
authors.affiliation: Division of Neurological Surgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, 350 W Thomas Rd, Phoenix, AZ 85013, USA.
authors.forename: Jakub
authors.initials: J
authors.lastname: Godzik
authors.affiliation: Department of Orthopaedic Surgery, Washington University School of Medicine, 660 South Euclid Ave, Box 8233, St. Louis, MO, USA.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Dalton
authors.affiliation: Department of Orthopaedic Surgery, Washington University School of Medicine, 660 South Euclid Ave, Box 8233, St. Louis, MO, USA.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Jaffe
authors.affiliation: Department of Orthopedic Surgery, Columbia College of Physicians and Surgeons, The Spine Hospital, 5141 Broadway Ave, New York, NY 10034, USA.
authors.forename: Lawrence G
authors.initials: LG
authors.lastname: Lenke
authors.affiliation: Department of Orthopaedic Surgery, Washington University School of Medicine, 660 South Euclid Ave, Box 8233, St. Louis, MO, USA. Electronic address: kellymi@wudosis.wustl.edu.
authors.forename: Michael P
authors.initials: MP
authors.lastname: Kelly
mesh_terms: D000328:Adult; D000368:Aged; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D015203:Reproducibility of Results; D012600:Scoliosis / Q000473:pathology*; D012955:Societies, Medical; D011795:Surveys and Questionnaires / Q000592:standards*; D017216:Telemedicine / Q000592:standards*; D013689:Telephone
keywords: Adult spinal deformity; Oswestry Disability Index; Outcomes; SRS-22r; Telephone administration