Tracking Spinal Cord Injury Functional Outcomes Across the Lifespan: Validation of Linking Coefficients

Pengsheng Ni, M. J. Mulcahey, Mary D. Slavin, Christina Calhoun Thielen, Lawrence C. Vogel, Cristina Sadowsky, Loren T. Davidson, Alan M. Jette

Research output: Contribution to journalArticle

Abstract

Objective: Validation of linking coefficients to transform Pediatric Spinal Cord Injury Activity Measure (PEDI-SCI/AM) scores to adult Spinal Cord Injury-Functional Index (SCI-FI) scores. Design: This cross-sectional study administered PEDI-SCI/AM and SCI-FI computerized adaptive tests (CATs) and short forms (SFs) to children with SCI and parents or caregivers. Setting: Hospitals, university, and rehabilitation institute. Participants: About 107 children with SCI and 96 parent or caregivers. Interventions: Not applicable. Main Outcome Measures: Linking coefficients estimated SCI-FI (est-SCI-FI) scores from PEDI-SCI/AM scores for matched domains. Correlations between est-SCI-FI and actual SCI-FI scores were calculated. If correlations exceeded the criterion linking (0.866), the following analyses to compare est-SCI-FI and actual SCI-FI scores were conducted: paired t tests, intraclass correlation coefficients (ICCs 3, 1), percent of cases with absolute score differences at different thresholds. Results: Two matched domains, PEDI-SCI/AM Daily Routine/SCI-FI Self-Care and PEDI-SCI/AM General Mobility/SCI-FI Basic Mobility, met the linking criterion for both respondent-types (parent and child) and administration modes (CAT and SF). PEDI-SCI/AM Daily Routine and SCI-FI Fine Motor Function did not meet linking criterion for respondent type or mode. The linking criterion was met for wheelchair domains (child SF and CAT) and ambulation domains (child SF only). Significant differences between est-SCI-FI and actual SCI-FI scores were noted for all matched domains except Daily Routine/Self-Care (child SF only; parent SF and CAT). ICC values showed excellent agreement (range=0.75-0.89). Absolute differences between est-SCI-FI and actual SCI-FI scores were less than 1 standard deviation (except wheelchair CAT child). Conclusions: Linking coefficients applied to PEDI-SCI/AM scores can provide valid SCI-FI estimates that vary by domain, mode, and respondent type.

Original languageEnglish (US)
JournalArchives of Physical Medicine and Rehabilitation
DOIs
StatePublished - Jan 1 2019
Externally publishedYes

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Spinal Cord Injuries
Pediatrics
Wheelchairs
Self Care
Caregivers
Walking

Keywords

  • Rehabilitation
  • Spinal cord injuries

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

Cite this

Tracking Spinal Cord Injury Functional Outcomes Across the Lifespan : Validation of Linking Coefficients. / Ni, Pengsheng; Mulcahey, M. J.; Slavin, Mary D.; Thielen, Christina Calhoun; Vogel, Lawrence C.; Sadowsky, Cristina; Davidson, Loren T.; Jette, Alan M.

In: Archives of Physical Medicine and Rehabilitation, 01.01.2019.

Research output: Contribution to journalArticle

Ni, Pengsheng ; Mulcahey, M. J. ; Slavin, Mary D. ; Thielen, Christina Calhoun ; Vogel, Lawrence C. ; Sadowsky, Cristina ; Davidson, Loren T. ; Jette, Alan M. / Tracking Spinal Cord Injury Functional Outcomes Across the Lifespan : Validation of Linking Coefficients. In: Archives of Physical Medicine and Rehabilitation. 2019.
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abstract = "Objective: Validation of linking coefficients to transform Pediatric Spinal Cord Injury Activity Measure (PEDI-SCI/AM) scores to adult Spinal Cord Injury-Functional Index (SCI-FI) scores. Design: This cross-sectional study administered PEDI-SCI/AM and SCI-FI computerized adaptive tests (CATs) and short forms (SFs) to children with SCI and parents or caregivers. Setting: Hospitals, university, and rehabilitation institute. Participants: About 107 children with SCI and 96 parent or caregivers. Interventions: Not applicable. Main Outcome Measures: Linking coefficients estimated SCI-FI (est-SCI-FI) scores from PEDI-SCI/AM scores for matched domains. Correlations between est-SCI-FI and actual SCI-FI scores were calculated. If correlations exceeded the criterion linking (0.866), the following analyses to compare est-SCI-FI and actual SCI-FI scores were conducted: paired t tests, intraclass correlation coefficients (ICCs 3, 1), percent of cases with absolute score differences at different thresholds. Results: Two matched domains, PEDI-SCI/AM Daily Routine/SCI-FI Self-Care and PEDI-SCI/AM General Mobility/SCI-FI Basic Mobility, met the linking criterion for both respondent-types (parent and child) and administration modes (CAT and SF). PEDI-SCI/AM Daily Routine and SCI-FI Fine Motor Function did not meet linking criterion for respondent type or mode. The linking criterion was met for wheelchair domains (child SF and CAT) and ambulation domains (child SF only). Significant differences between est-SCI-FI and actual SCI-FI scores were noted for all matched domains except Daily Routine/Self-Care (child SF only; parent SF and CAT). ICC values showed excellent agreement (range=0.75-0.89). Absolute differences between est-SCI-FI and actual SCI-FI scores were less than 1 standard deviation (except wheelchair CAT child). Conclusions: Linking coefficients applied to PEDI-SCI/AM scores can provide valid SCI-FI estimates that vary by domain, mode, and respondent type.",
keywords = "Rehabilitation, Spinal cord injuries",
author = "Pengsheng Ni and Mulcahey, {M. J.} and Slavin, {Mary D.} and Thielen, {Christina Calhoun} and Vogel, {Lawrence C.} and Cristina Sadowsky and Davidson, {Loren T.} and Jette, {Alan M.}",
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T2 - Validation of Linking Coefficients

AU - Ni, Pengsheng

AU - Mulcahey, M. J.

AU - Slavin, Mary D.

AU - Thielen, Christina Calhoun

AU - Vogel, Lawrence C.

AU - Sadowsky, Cristina

AU - Davidson, Loren T.

AU - Jette, Alan M.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Objective: Validation of linking coefficients to transform Pediatric Spinal Cord Injury Activity Measure (PEDI-SCI/AM) scores to adult Spinal Cord Injury-Functional Index (SCI-FI) scores. Design: This cross-sectional study administered PEDI-SCI/AM and SCI-FI computerized adaptive tests (CATs) and short forms (SFs) to children with SCI and parents or caregivers. Setting: Hospitals, university, and rehabilitation institute. Participants: About 107 children with SCI and 96 parent or caregivers. Interventions: Not applicable. Main Outcome Measures: Linking coefficients estimated SCI-FI (est-SCI-FI) scores from PEDI-SCI/AM scores for matched domains. Correlations between est-SCI-FI and actual SCI-FI scores were calculated. If correlations exceeded the criterion linking (0.866), the following analyses to compare est-SCI-FI and actual SCI-FI scores were conducted: paired t tests, intraclass correlation coefficients (ICCs 3, 1), percent of cases with absolute score differences at different thresholds. Results: Two matched domains, PEDI-SCI/AM Daily Routine/SCI-FI Self-Care and PEDI-SCI/AM General Mobility/SCI-FI Basic Mobility, met the linking criterion for both respondent-types (parent and child) and administration modes (CAT and SF). PEDI-SCI/AM Daily Routine and SCI-FI Fine Motor Function did not meet linking criterion for respondent type or mode. The linking criterion was met for wheelchair domains (child SF and CAT) and ambulation domains (child SF only). Significant differences between est-SCI-FI and actual SCI-FI scores were noted for all matched domains except Daily Routine/Self-Care (child SF only; parent SF and CAT). ICC values showed excellent agreement (range=0.75-0.89). Absolute differences between est-SCI-FI and actual SCI-FI scores were less than 1 standard deviation (except wheelchair CAT child). Conclusions: Linking coefficients applied to PEDI-SCI/AM scores can provide valid SCI-FI estimates that vary by domain, mode, and respondent type.

AB - Objective: Validation of linking coefficients to transform Pediatric Spinal Cord Injury Activity Measure (PEDI-SCI/AM) scores to adult Spinal Cord Injury-Functional Index (SCI-FI) scores. Design: This cross-sectional study administered PEDI-SCI/AM and SCI-FI computerized adaptive tests (CATs) and short forms (SFs) to children with SCI and parents or caregivers. Setting: Hospitals, university, and rehabilitation institute. Participants: About 107 children with SCI and 96 parent or caregivers. Interventions: Not applicable. Main Outcome Measures: Linking coefficients estimated SCI-FI (est-SCI-FI) scores from PEDI-SCI/AM scores for matched domains. Correlations between est-SCI-FI and actual SCI-FI scores were calculated. If correlations exceeded the criterion linking (0.866), the following analyses to compare est-SCI-FI and actual SCI-FI scores were conducted: paired t tests, intraclass correlation coefficients (ICCs 3, 1), percent of cases with absolute score differences at different thresholds. Results: Two matched domains, PEDI-SCI/AM Daily Routine/SCI-FI Self-Care and PEDI-SCI/AM General Mobility/SCI-FI Basic Mobility, met the linking criterion for both respondent-types (parent and child) and administration modes (CAT and SF). PEDI-SCI/AM Daily Routine and SCI-FI Fine Motor Function did not meet linking criterion for respondent type or mode. The linking criterion was met for wheelchair domains (child SF and CAT) and ambulation domains (child SF only). Significant differences between est-SCI-FI and actual SCI-FI scores were noted for all matched domains except Daily Routine/Self-Care (child SF only; parent SF and CAT). ICC values showed excellent agreement (range=0.75-0.89). Absolute differences between est-SCI-FI and actual SCI-FI scores were less than 1 standard deviation (except wheelchair CAT child). Conclusions: Linking coefficients applied to PEDI-SCI/AM scores can provide valid SCI-FI estimates that vary by domain, mode, and respondent type.

KW - Rehabilitation

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