Validity, Reliability, and Responsiveness of SRS-7 as an Outcomes Assessment Instrument for Operatively Treated Patients with Adult Spinal Deformity

the International Spine Study Group

Research output: Contribution to journalArticle

Abstract

STUDY DESIGN.: Retrospective analysis OBJECTIVE.: The aim of our study was to compare the normality, concurrent validity, internal consistency, responsiveness, and dimensionality of an item response theory–derived 7-question instrument (SRS-7), against the Scoliosis Research Society-22r (SRS-22r) questionnaire in operatively treated patients with adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA.: Compared with SRS-22r, SRS-7 (which has been validated in operatively treated patients with adolescent idiopathic scoliosis) has advantages of being short, unidimensional, and linear. METHODS.: A prospective database of ASD patients was queried for patients 18 years or older who were operatively treated, and who answered pre- and postoperative (at 2-year follow-up) SRS-22r questions (n?=?276). Corresponding SRS-7 scores were calculated using answers to SRS-22r items 1, 4, 6, 10, 18, 19, and 20. Significance was set at a P value less than 0.01. RESULTS.: SRS-7 and SRS-22r were normally distributed preoperatively but not postoperatively. SRS-7 and SRS-22r scores had high correlation both preoperatively (r?=?0.76, P?

Original languageEnglish (US)
JournalSpine
DOIs
StateAccepted/In press - Feb 29 2016

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Scoliosis
Reproducibility of Results
Outcome Assessment (Health Care)
Research
Databases

ASJC Scopus subject areas

  • Clinical Neurology
  • Orthopedics and Sports Medicine

Cite this

Validity, Reliability, and Responsiveness of SRS-7 as an Outcomes Assessment Instrument for Operatively Treated Patients with Adult Spinal Deformity. / the International Spine Study Group.

In: Spine, 29.02.2016.

Research output: Contribution to journalArticle

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title = "Validity, Reliability, and Responsiveness of SRS-7 as an Outcomes Assessment Instrument for Operatively Treated Patients with Adult Spinal Deformity",
abstract = "STUDY DESIGN.: Retrospective analysis OBJECTIVE.: The aim of our study was to compare the normality, concurrent validity, internal consistency, responsiveness, and dimensionality of an item response theory–derived 7-question instrument (SRS-7), against the Scoliosis Research Society-22r (SRS-22r) questionnaire in operatively treated patients with adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA.: Compared with SRS-22r, SRS-7 (which has been validated in operatively treated patients with adolescent idiopathic scoliosis) has advantages of being short, unidimensional, and linear. METHODS.: A prospective database of ASD patients was queried for patients 18 years or older who were operatively treated, and who answered pre- and postoperative (at 2-year follow-up) SRS-22r questions (n?=?276). Corresponding SRS-7 scores were calculated using answers to SRS-22r items 1, 4, 6, 10, 18, 19, and 20. Significance was set at a P value less than 0.01. RESULTS.: SRS-7 and SRS-22r were normally distributed preoperatively but not postoperatively. SRS-7 and SRS-22r scores had high correlation both preoperatively (r?=?0.76, P?",
author = "{the International Spine Study Group} and Amit Jain and Virginie Lafage and Kelly, {Michael P.} and Hamid Hassanzadeh and Neuman, {Brian J} and Daniel Sciubba and Shay Bess and Shaffrey, {Christopher I.} and Ames, {Christopher P.} and Scheer, {Justin K.} and Douglas Burton and Gupta, {Munish C.} and Robert Hart and Hostin, {Richard A.} and Kebaish, {Khaled M}",
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AU - the International Spine Study Group

AU - Jain, Amit

AU - Lafage, Virginie

AU - Kelly, Michael P.

AU - Hassanzadeh, Hamid

AU - Neuman, Brian J

AU - Sciubba, Daniel

AU - Bess, Shay

AU - Shaffrey, Christopher I.

AU - Ames, Christopher P.

AU - Scheer, Justin K.

AU - Burton, Douglas

AU - Gupta, Munish C.

AU - Hart, Robert

AU - Hostin, Richard A.

AU - Kebaish, Khaled M

PY - 2016/2/29

Y1 - 2016/2/29

N2 - STUDY DESIGN.: Retrospective analysis OBJECTIVE.: The aim of our study was to compare the normality, concurrent validity, internal consistency, responsiveness, and dimensionality of an item response theory–derived 7-question instrument (SRS-7), against the Scoliosis Research Society-22r (SRS-22r) questionnaire in operatively treated patients with adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA.: Compared with SRS-22r, SRS-7 (which has been validated in operatively treated patients with adolescent idiopathic scoliosis) has advantages of being short, unidimensional, and linear. METHODS.: A prospective database of ASD patients was queried for patients 18 years or older who were operatively treated, and who answered pre- and postoperative (at 2-year follow-up) SRS-22r questions (n?=?276). Corresponding SRS-7 scores were calculated using answers to SRS-22r items 1, 4, 6, 10, 18, 19, and 20. Significance was set at a P value less than 0.01. RESULTS.: SRS-7 and SRS-22r were normally distributed preoperatively but not postoperatively. SRS-7 and SRS-22r scores had high correlation both preoperatively (r?=?0.76, P?

AB - STUDY DESIGN.: Retrospective analysis OBJECTIVE.: The aim of our study was to compare the normality, concurrent validity, internal consistency, responsiveness, and dimensionality of an item response theory–derived 7-question instrument (SRS-7), against the Scoliosis Research Society-22r (SRS-22r) questionnaire in operatively treated patients with adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA.: Compared with SRS-22r, SRS-7 (which has been validated in operatively treated patients with adolescent idiopathic scoliosis) has advantages of being short, unidimensional, and linear. METHODS.: A prospective database of ASD patients was queried for patients 18 years or older who were operatively treated, and who answered pre- and postoperative (at 2-year follow-up) SRS-22r questions (n?=?276). Corresponding SRS-7 scores were calculated using answers to SRS-22r items 1, 4, 6, 10, 18, 19, and 20. Significance was set at a P value less than 0.01. RESULTS.: SRS-7 and SRS-22r were normally distributed preoperatively but not postoperatively. SRS-7 and SRS-22r scores had high correlation both preoperatively (r?=?0.76, P?

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