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Hiremath SV, Marino RJ, Coffman DL, Karmarkar AM, Tucker CA. Evaluating associations between trauma-related characteristics and functional recovery in individuals with spinal cord injury. J Spinal Cord Med 2024; 47:486-494. [PMID: 35993800 PMCID: PMC11218572 DOI: 10.1080/10790268.2022.2112849] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
Abstract
OBJECTIVE To determine the associations between trauma variables, acute phase-related variables, and patient-level characteristics with functional recovery during inpatient rehabilitation for individuals with spinal cord injury (SCI). The associations were evaluated by linking individuals' records between the Pennsylvania Trauma Systems Outcomes Study and the National SCI Model Systems databases. DESIGN Retrospective cohort analysis. SETTING Two SCI Model Centers in Pennsylvania, United States. METHODS We used a record linkage toolkit in Python to link 735 individuals with traumatic SCI between the databases. The percentage for true-match and error were 92.0% and 0.1%, respectively. The functional recovery during inpatient rehabilitation was determined in 604 individuals with SCI by ordinary least squares regression (OLS) and gradient boosting regression (GBR) analyses. RESULTS The OLS and GBR analyses indicated older age, greater impairment (SCI level combined with American Spinal Injury Association impairment scale), presence of diabetes mellitus, pulmonary complications during acute care, and longer length of stay at an inpatient rehabilitation facility were associated with lower functional recovery (OLS R2 = 0.56 and GBR R2 = 0.58). CONCLUSIONS Trauma and acute care variables in addition to patient characteristics were associated with functional recovery during inpatient rehabilitation in individuals with SCI. Further investigation is needed to understand the role of diabetes mellitus and pulmonary complications, which have not been previously associated with functional recovery in individuals with SCI.
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Affiliation(s)
- Shivayogi V. Hiremath
- Department of Health and Rehabilitation Sciences, Temple University, Philadelphia, Pennsylvania, USA
| | - Ralph J. Marino
- Department of Rehabilitation Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Donna L. Coffman
- Department of Epidemiology and Biostatistics, Temple University, Philadelphia, Pennsylvania, USA
| | - Amol M. Karmarkar
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, Virginia, USA
- Sheltering Arms Institute, Richmond, Virginia, USA
| | - Carole A. Tucker
- Department of Nutrition, Metabolic and Rehabilitation Sciences, University of Texas Medical Branch-Galveston, Galveston, Texas, USA
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Javeed S, Zhang JK, Greenberg JK, Botterbush K, Benedict B, Plog B, Gupta VP, Dibble CF, Khalifeh JM, Wen H, Chen Y, Park Y, Belzberg A, Tuffaha S, Burks SS, Levi AD, Zager EL, Faraji AH, Mahan MA, Midha R, Wilson TJ, Juknis N, Ray WZ. Impact of Upper Limb Motor Recovery on Functional Independence After Traumatic Low Cervical Spinal Cord Injury. J Neurotrauma 2024; 41:1211-1222. [PMID: 38062795 DOI: 10.1089/neu.2023.0140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024] Open
Abstract
Cervical spinal cord injury (SCI) causes devastating loss of upper limb function and independence. Restoration of upper limb function can have a profound impact on independence and quality of life. In low-cervical SCI (level C5-C8), upper limb function can be restored via reinnervation strategies such as nerve transfer surgery. The translation of recovered upper limb motor function into functional independence in activities of daily living (ADLs), however, remains unknown in low cervical SCI (i.e., tetraplegia). The objective of this study was to evaluate the association of patterns in upper limb motor recovery with functional independence in ADLs. This will then inform prioritization of reinnervation strategies focused to maximize function in patients with tetraplegia. This retrospective study performed a secondary analysis of patients with low cervical (C5-C8) enrolled in the SCI Model Systems (SCIMS) database. Baseline neurological examinations and their association with functional independence in major ADLs-i.e., eating, bladder management, and transfers (bed/wheelchair/chair)-were evaluated. Motor functional recovery was defined as achieving motor strength, in modified research council (MRC) grade, of ≥ 3 /5 at one year from ≤ 2/5 at baseline. The association of motor function recovery with functional independence at one-year follow-up was compared in patients with recovered elbow flexion (C5), wrist extension (C6), elbow extension (C7), and finger flexion (C8). A multi-variable logistic regression analysis, adjusting for known factors influencing recovery after SCI, was performed to evaluate the impact of motor function at one year on a composite outcome of functional independence in major ADLs. Composite outcome was defined as functional independence measure score of 6 or higher (complete independence) in at least two domains among eating, bladder management, and transfers. Between 1992 and 2016, 1090 patients with low cervical SCI and complete neurological/functional measures were included. At baseline, 67% of patients had complete SCI and 33% had incomplete SCI. The majority of patients were dependent in eating, bladder management, and transfers. At one-year follow-up, the largest proportion of patients who recovered motor function in finger flexion (C8) and elbow extension (C7) gained independence in eating, bladder management, and transfers. In multi-variable analysis, patients who had recovered finger flexion (C8) or elbow extension (C7) had higher odds of gaining independence in a composite of major ADLs (odds ratio [OR] = 3.13 and OR = 2.87, respectively, p < 0.001). Age 60 years (OR = 0.44, p = 0.01), and complete SCI (OR = 0.43, p = 0.002) were associated with reduced odds of gaining independence in ADLs. After cervical SCI, finger flexion (C8) and elbow extension (C7) recovery translate into greater independence in eating, bladder management, and transfers. These results can be used to design individualized reinnervation plans to reanimate upper limb function and maximize independence in patients with low cervical SCI.
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Affiliation(s)
- Saad Javeed
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
| | - Justin K Zhang
- Department of Neurological Surgery, University of Utah, Salt Lake City, Utah, USA
| | - Jacob K Greenberg
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
| | - Kathleen Botterbush
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
| | - Braeden Benedict
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
| | - Benjamin Plog
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
| | - Vivek P Gupta
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
| | - Christopher F Dibble
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
| | - Jawad M Khalifeh
- Department of Neurological Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | - Huacong Wen
- Department of Physical Medicine and Rehabilitation, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Yuying Chen
- Department of Physical Medicine and Rehabilitation, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Yikyung Park
- Division of Public Health Sciences, Department of Surgery, Washington University, St. Louis, Missouri, USA
| | - Allan Belzberg
- Department of Neurological Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | - Sami Tuffaha
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University, Baltimore, Maryland, USA
| | - Stephen Shelby Burks
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Allan D Levi
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Eric L Zager
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Amir H Faraji
- Department of Neurological Surgery, Houston Methodist Hospital, Houston, Texas, USA
| | - Mark A Mahan
- Department of Neurological Surgery, University of Utah, Salt Lake City, Utah, USA
| | - Rajiv Midha
- Department of Clinical Neurosciences, University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Thomas J Wilson
- Department of Neurosurgery, Stanford University, Palo Alto, California, USA
| | - Neringa Juknis
- Physical Medicine and Rehabilitation, Washington University, St. Louis, Missouri, USA
| | - Wilson Z Ray
- Department of Neurological Surgery, Washington University, St. Louis, Missouri, USA
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Fellinghauer C, Debelak R, Strobl C. What Affects the Quality of Score Transformations? Potential Issues in True-Score Equating Using the Partial Credit Model. EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT 2023; 83:1249-1290. [PMID: 37970488 PMCID: PMC10638984 DOI: 10.1177/00131644221143051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
This simulation study investigated to what extent departures from construct similarity as well as differences in the difficulty and targeting of scales impact the score transformation when scales are equated by means of concurrent calibration using the partial credit model with a common person design. Practical implications of the simulation results are discussed with a focus on scale equating in health-related research settings. The study simulated data for two scales, varying the number of items and the sample sizes. The factor correlation between scales was used to operationalize construct similarity. Targeting of the scales was operationalized through increasing departure from equal difficulty and by varying the dispersion of the item and person parameters in each scale. The results show that low similarity between scales goes along with lower transformation precision. In cases with equal levels of similarity, precision improves in settings where the range of the item parameters is encompassing the person parameters range. With decreasing similarity, score transformation precision benefits more from good targeting. Difficulty shifts up to two logits somewhat increased the estimation bias but without affecting the transformation precision. The observed robustness against difficulty shifts supports the advantage of applying a true-score equating methods over identity equating, which was used as a naive baseline method for comparison. Finally, larger sample size did not improve the transformation precision in this study, longer scales improved only marginally the quality of the equating. The insights from the simulation study are used in a real-data example.
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Javeed S, Greenberg JK, Zhang JK, Dibble CF, Khalifeh JM, Liu Y, Wilson TJ, Yang LJ, Park Y, Ray WZ. Derivation and Validation of a Clinical Prediction Rule for Upper Limb Functional Outcomes After Traumatic Cervical Spinal Cord Injury. JAMA Netw Open 2022; 5:e2247949. [PMID: 36542381 PMCID: PMC9857030 DOI: 10.1001/jamanetworkopen.2022.47949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
IMPORTANCE Traumatic cervical spinal cord injury (SCI) can result in debilitating paralysis. Following cervical SCI, accurate early prediction of upper limb recovery can serve an important role in guiding the appropriateness and timing of reconstructive therapies. OBJECTIVE To develop a clinical prediction rule to prognosticate upper limb functional recovery after cervical SCI. DESIGN, SETTING, AND PARTICIPANTS This prognostic study was a retrospective review of a longitudinal cohort study including patients enrolled in the National SCI model systems (SCIMS) database in US. Eligible patients were 15 years or older with tetraplegia (neurological level of injury C1-C8, American Spinal Cord Injury Association [ASIA] impairment scale [AIS] A-D), with early (within 1 month of SCI) and late (1-year follow-up) clinical examinations from 2011 to 2016. The data analysis was conducted from September 2021 to June 2022. MAIN OUTCOMES AND MEASURES The primary outcome was a composite of dependency in eating, bladder management, transfers, and locomotion domains of functional independence measure at 1-year follow-up. Each domain ranges from 1 to 7 with a lower score indicating greater functional dependence. Composite dependency was defined as a score of 4 or higher in at least 3 chosen domains. Multivariable logistic regression was used to predict the outcome based on early neurological variables. Discrimination was quantified using C statistics, and model performance was internally validated with bootstrapping and 10-fold cross-validation. The performance of the prediction score was compared with AIS grading. Data were split into derivation (2011-2014) and temporal-validation (2015-2016) cohorts. RESULTS Among 2373 patients with traumatic cervical SCI, 940 had complete 1-year outcome data (237 patients [25%] aged 60 years or older; 753 men [80%]). The primary outcome was present in 118 patients (13%), which included 92 men (78%), 83 (70%) patients who were younger than 60 years, and 73 (62%) patients experiencing AIS grade A SCI. The variables significantly associated with the outcome were age (age 60 years or older: OR, 2.31; 95% CI, 1.26-4.19), sex (men: OR, 0.60; 95% CI, 0.31-1.17), light-touch sensation at C5 (OR, 0.44; 95% CI, 0.44-1.01) and C8 (OR, 036; 95% CI, 0.24-0.53) dermatomes, and motor scores of the elbow flexors (C5) (OR, 0.74; 95% CI, 0.60-0.89) and wrist extensors (C6) (OR, 0.61; 95% CI, 0.49-0.75). A multivariable model including these variables had excellent discrimination in distinguishing dependent from independent patients in the temporal-validation cohort (C statistic, 0.90; 95% CI, 0.88-0.93). A clinical prediction score (range, 0 to 45 points) was developed based on these measures, with higher scores increasing the probability of dependency. The discrimination of the prediction score was significantly higher than from AIS grading (change in AUC, 0.14; 95% CI, 0.10-0.18; P < .001). CONCLUSIONS AND RELEVANCE The findings of this study suggest that this prediction rule may help prognosticate upper limb function following cervical SCI. This tool can be used to set patient expectations, rehabilitation goals, and aid decision-making regarding the appropriateness and timing for upper limb reconstructive surgeries.
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Affiliation(s)
- Saad Javeed
- Department of Neurological Surgery, Washington University, St. Louis, Missouri
| | - Jacob K. Greenberg
- Department of Neurological Surgery, Washington University, St. Louis, Missouri
| | - Justin K. Zhang
- Department of Neurological Surgery, Washington University, St. Louis, Missouri
| | | | - Jawad M. Khalifeh
- Department of Neurological Surgery, Johns Hopkins University, Baltimore, Maryland
| | - Ying Liu
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St Louis, Missouri
| | - Thomas J. Wilson
- Department of Neurosurgery, Stanford University, Stanford, California
| | - Lynda J. Yang
- Department of Neurological Surgery, University of Michigan School of Medicine, Ann Arbor
| | - Yikyung Park
- Department of Neurological Surgery, Johns Hopkins University, Baltimore, Maryland
| | - Wilson Z. Ray
- Department of Neurological Surgery, Washington University, St. Louis, Missouri
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Maritz R, Fellinghauer C, Brach M, Curt A, Gmünder HP, Hopfe M, Hund-Georgiadis M, Jordan X, Scheel-Sailer A, Stucki G. A Rasch-Based Comparison of the Functional Independence Measure and Spinal Cord Independence Measure for Outcome and Quality in the Rehabilitation of Persons with Spinal Cord Injury. J Rehabil Med 2022; 54:jrm00262. [PMID: 35166364 PMCID: PMC8892304 DOI: 10.2340/jrm.v54.82] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022] Open
Abstract
Objective The Functional Independence Measure (FIM™) and spinal cord injury (SCI)-specific Spinal Cord Independence Measure (SCIM) are commonly used tools for outcome measurement and quality reporting in rehabilitation. The objective of this study was to investigate the psychometric properties of FIM™ and SCIM and to equate the 2 scales. Methods First, content equivalence of FIM™ and SCIM was established through qualitative linking with the International Classification for Functioning, Disability and Health (ICF). Secondly, a Rasch analysis of overlapping contents determined the metric properties of the scales and provided the empirical basis for scale equating. Furthermore, a transformation table for FIM™ and SCIM was created and evaluated. Subjects Patients with SCI in Swiss inpatient rehabilitation in 2017–18. Results The ICF linking and a separate Rasch analysis of FIM™ restricted the analysis to the motor scales of FIM™ and SCIM. The Rasch analysis of these scales showed good metric properties. The co-calibration of FIM™ and SCIM motor scores was supported with good fit to the Rasch model. The operational range of SCIM is larger than for FIM™ motor scale. Discussion This study supports the advantage of using SCIM compared with FIM™ for assessing the functional independence of patients with SCI in rehabilitation.
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Affiliation(s)
- Roxanne Maritz
- Swiss Paraplegic Research, Nottwil; Center for Rehabilitation in Global Health Systems, Department of Health Sciences and Medicine, University of Lucerne, Lucerne.
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