Race, employment, and spinal cord injury

OBJECTIVES: To examine issues of employment and race for persons with spinal cord injury (SCI), by assessing the type of work that was being done before and after injury and by placing this in the context of patterns for the general population. DESIGN: Retrospective, cross-sectional analysis. SETTING: Centers funded as part of the federally sponsored Model Spinal Cord Injury Systems (MSCIS) Project. PARTICIPANTS: Two samples: 5925 African Americans and whites with SCI who are part of the MSCIS and a subset of 577 people with SCI. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Demographic information, occupational status, employment rate, job census codes, Craig Hospital Assessment and Reporting Technique-Short Form, and Satisfaction With Life Scale. RESULTS: Racial disparities were found in employment rates before injury and at 1, 5, 10, 15, and 20 years after SCI. Differences were also found in the types of jobs that were held before SCI with patterns for participants similar to those of African Americans and whites in the general population. No differences were found in the types of jobs held by African Americans and whites with SCI at 1 year after injury. After injury, African Americans had lower economic self-sufficiency scores, regardless of employment status, and lower social integration scores among those who were not employed. CONCLUSIONS: Racial disparities found in employment patterns among persons with SCI mirrored patterns among the general population.     

Etiology and incidence of rehospitalization after traumatic spinal cord injury: a multicenter analysis

OBJECTIVES: To examine the frequency and reasons for rehospitalization in persons with acute traumatic spinal cord injury (SCI) during follow-up years and to examine the association between rehospitalization and demographics, neurologic category, payer sources, length of stay (LOS), discharge motor FIM instrument score, and discharge residence. DESIGN: Survey design with analysis of cross-sectional data. SETTING: Model Spinal Cord Injury Systems (MSCIS) centers. PARTICIPANTS: Data for 8668 persons with SCI from 16 MSCIS centers entered in the National Spinal Cord Injury Statistical Center database between 1995 and 2002. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: MSCIS Forms I and II were used to identify the annual incidence, medical complications, and etiologies of rehospitalizations reported at 1-, 5-, 10-, 15-, and 20-year follow-ups. RESULTS: The leading cause of rehospitalization was diseases of the genitourinary system, including urinary tract infections (UTIs). Diseases of the respiratory system tended to be more likely in patients with tetraplegia (C1-8 American Spinal Injury Association [ASIA] grades A, B, C); whereas patients with paraplegia (T1-S5 ASIA grades A, B, C) were more likely to be rehospitalized for pressure ulcers. The rate of rehospitalization was significantly higher at year 1, 5, and 20 for those who were discharged to a skilled nursing facility after acute rehabilitation. Lower motor score using the FIM was predictive of rehospitalization (P=.000). The average LOS per rehospitalization at the year-5 follow-up was approximately 12 days, which is lower than in past MSCIS reports. CONCLUSIONS: Despite improvements in SCI medical management, rehospitalization rates remain high, with an increased incidence in conditions associated with the genitourinary system (including UTIs), respiratory complications (including pneumonia), and diseases of the skin (including pressure ulcers). Acutely injured patients need close follow-up to reduce morbidity and rehospitalizations.     

Trends in spinal cord injury demographics and treatment outcomes between 1973 and 1986.

A study of the National Spinal Cord Injury Statistical Center database on 6,563 persons treated at Spinal Cord Injury Care Systems was conducted to detect demographic and treatment outcome trends over time. Data from the initial hospitalization and first two years postinjury were divided into four time periods based on injury year (1973 to 1977, 1978 to 1980, 1981 to 1983, 1984 to 1986). Between 1973 and 1986, mean age at injury increased, as did the percentage of nonwhites and the percentage of persons with quadriplegia, while the percentage of neurologically complete lesions decreased. There was an increase in long-term use of intermittent catheterization. Ventilator use during hospitalization also increased. Mean lengths of stay for acute care and rehabilitation decreased, although mean inflation-adjusted hospital charges increased. The percentage of persons rehospitalized during the second postinjury year decreased substantially. From 1973 to 1986, for persons admitted to the model system within 24 hours of injury, there was a 66% decrease in the risk of dying within the first two years postinjury. Overall, these data document changing demographics and treatment practices as well as an improved prognosis for persons with spinal cord injuries.     

Late neurologic recovery after traumatic spinal cord injury

OBJECTIVE: To present Model Spinal Cord Injury System (MSCIS) data on late neurologic recovery after 1 year after spinal cord injury (SCI). DESIGN: Longitudinal study of neurologic status as determined by annual evaluations at 1 and 5 years postinjury. SETTING: MSCIS centers contributing data on people with traumatic SCI to the National Spinal Cord Injury Statistical Center database. PARTICIPANTS: People with traumatic SCI (N=987) admitted to an MSCIS between 1988 and 1997 with 1- and 5-year follow-up examinations. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: American Spinal Injury Association (ASIA) Impairment Scale (AIS) classification, motor index scores (MIS), motor level, and neurologic level of injury (NLI), measured and compared for changes over time. RESULTS: The majority of subjects (94.4%) who had a neurologically complete injury at 1 year remained complete at 5 years postinjury, with 3.5% improving to AIS grade B, and up to 1.05% each improving to AIS grades C and D. There was a statistically significant change noted for MIS. There were no significant changes for the motor level and NLI over 4 years; however, approximately 20% of subjects improved their motor level and NLI. People with complete and incomplete injuries had similar improvements in motor level, but subjects with an incomplete injury had a greater chance of improvement in NLI and MIS. CONCLUSIONS: There was a small degree of neurologic recovery (between 1 and 5 y postinjury) after a traumatic SCI. Late conversion, between 1 and 5 years, from a neurologically complete to an incomplete injury occurred in 5.6% of cases, but in only up to 2.1% was there a conversion from motor complete to motor incomplete status. Limitations of this study included changes in the ASIA classification during the study and in the intra- and interrater reliability typically seen in longitudinal studies of the ASIA standards. Functional changes were not studied. Knowledge of the degree of late recovery may help in analyzing newer interventions to enhance recovery.     

History, implementation, and current status of the National Spinal Cord Injury Database

OBJECTIVE: To summarize a 25-year history of the Model Spinal Cord Injury Program and the coexistent National Spinal Cord Injury Database and provide the status of the Database with a discussion of the strengths and weaknesses. DESIGN: Inception cohort. SETTING: Model spinal cord injury systems throughout the United States. RESULTS: As of September 1998, the National Spinal Cord Injury Database included abbreviated registry records on 6,085 new patients, more complete initial injury and hospitalization records on 18,969 new patients, and 78,627 annual follow up records on those persons. Although stability and continuity of the Database has been a priority since it was started, some changes were needed to meet the changes in health care, health care policy, and new technology. CONCLUSION: This large database can now provide a wealth of information about short- and long-term outcomes, provide data on which future health care policies can be evaluated, and act as a source for answers to future research questions.     

A demographic profile of new traumatic spinal cord injuries: change and stability over 30 years

OBJECTIVE: To evaluate epidemiologic trends in new spinal cord injuries (SCIs) in the United States over 3 decades. DESIGN: Consecutive case series. SETTING: Model Spinal Cord Injury Systems (MSCIS) facilities. Participants: Persons (N=30,532) admitted to MSCIS facilities within 365 days of injury between 1973 and 2003, and enrolled in the National Spinal Cord Injury Database. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Data were collected at MSCIS admission and rehabilitation discharge. Variables included age, gender, race and ethnic group, year of injury, and level and extent of injury. Specific etiologies were grouped as motor vehicle collisions (MVCs), violence, falls, sports, and other. Demographic and injury severity trends were analyzed by year of injury groupings according to decades (1973-1979, 1980-1989, 1990-1999, 2000-2003.) Chi-square tests assessed statistical significance. One-way analysis of variance compared mean ages. RESULTS: The male/female ratio remained fairly stable at 4:1, but the percentage of women increased slightly over time, especially from MVC etiologies ( P <.001). Over time, the mean age at injury increased significantly ( P <.001); it was 37.7+/-17.5 years in 2000-2003. The majority of cases were white (66.1%). Tetraplegia (54.1%) and complete injuries (55.6%) occurred more than paraplegia and incomplete injuries, respectively. MVCs (45.6%) remained the most common etiology; falls (19.6%) held the second position over violence (17.8%), except for the 1990-1999 period when the positions were reversed. Significantly increasing percentages of new injuries were seen for SCI due to automobile, motorcycle, bicycle, and all-terrain vehicle crashes, blunt object attacks, snow skiing, and medical and surgical mishaps. CONCLUSIONS: Many previously seen SCI demographic trends continued into the 2000 decade.     

Research from the Model Spinal Cord Injury Systems: findings from the current 5-year grant cycle

This issue of the Archives of Physical Medicine and Rehabilitation is dedicated to current research findings of the Model Spinal Cord Injury Systems (MSCIS) program. The MSCIS grants were established by the Rehabilitation Services Administration in the 1970s. Now administered by the National Institute on Disability and Rehabilitation Research within the Office of Special Education and Rehabilitation Services in the US Department of Education, the program has included 27 spinal cord injury centers in the United States over the years. In the current 5-year grant cycle (2000-2005), there are 16 designated regional MSCIS centers. In addition to establishing a comprehensive system of care, the grantees contribute patient data to the National Spinal Cord Injury Database (which now contains data on 30,532 subjects with follow-up of up to 30 y). In addition, the MSCIS grants enable the conduct of site-specific and collaborative research projects. To highlight the research findings of the program, the MSCIS have produced a special dissemination effort during each of the previous 5 grant cycles, with this issue of the Archives representing the latest of these endeavors. This article provides a brief history of the MSCIS program and highlights the important findings of the 17 original research articles contained in this issue.     

Economic factors and longevity in spinal cord injury: a reappraisal

Strauss D, DeVivo M, Shavelle R, Brooks J, Paculdo D. Economic factors and longevity in spinal cord injury: a reappraisal.

Objective

To review and reassess the findings of Krause and colleagues on the effect of economic and other risk factors on life expectancy after spinal cord injury, using an expanded and updated database.

Design

Pooled person-year analysis.

Setting

Model Spinal Cord Injury Systems hospitals.

Participants

A total of 7331 persons injured since 1973 who were enrolled in the National Spinal Cord Injury Database and received an evaluation between November 1995 and December 2005.

Interventions

Not applicable.

Main Outcome Measures

Mortality, determined by routine follow-up supplemented by information from the Social Security Death Index. Logistic regression models based on the predictor variables were developed to estimate the chance of dying in a given year.

Results

As in the Krause study, life expectancies of persons with the greatest handicap in economic self-sufficiency were substantially shorter than average. However, the positive effect of favorable economics was much less than previously reported, largely because having health insurance coverage through workers’ compensation was no longer a powerful (or statistically significant) predictor of survival.

Conclusions

The beneficial effect of favorable economics appears to be much less than previously reported. Further, the interpretation of the effects of modifiable factors (such as economics and social integration) is complicated by questions of cause and effect.     

Patterns of Internet use by persons with spinal cord injuries and relationship to health-related quality of life

OBJECTIVES: To examine patterns of computer and Internet use among persons with spinal cord injuries (SCI) and to assess the relationship between Internet use and health-related quality of life (HRQOL). DESIGN: Cross-sectional survey design. SETTING: National Model Spinal Cord Injury Systems. PARTICIPANTS: People with SCI enrolled in a national database. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Patterns of Internet use and relationship to HRQOL indicators: self-perceived health status, health status compared with 1 year ago, severity of depression, social integration score, occupation score, contacts with friends, business contacts, and satisfaction with life. RESULTS: Most subjects owned computers, had Internet access, and used the Internet regularly-primarily for email, disability and health information, and shopping. Bivariate analysis revealed significant differences in Internet access based on sociodemographics, particularly among subjects with less education and among African Americans and Hispanics. In initial univariate analysis, most HRQOL indicators were significantly better for Internet users; once sociodemographic factors were included, 4 indicators remained significant. CONCLUSIONS: Complex factors contribute to Internet access among people with SCI, with more barriers among specific subgroups. A significant HRQOL benefit from Internet use is suggested. Targeted interventions and studies of usage patterns are recommended.     

Effects of gender on neurologic and functional recovery after spinal cord injury

OBJECTIVE: To assess gender differences in neurologic and functional outcome measures in persons with spinal cord injury (SCI). DESIGN: Case series. SETTINGS: Model Spinal Cord Injury Systems (MSCIS) throughout the United States. PARTICIPANTS: People (N=14,433) admitted to an MSCIS within 30 days of injury. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Improvement in American Spinal Injury Association (ASIA) motor index score, ASIA Impairment Scale, level of injury, and FIM instrument scores after SCI. RESULTS: When examining subjects grouped by severity of injury, changes in ASIA motor index total scores, from system admission to 1-year anniversary, were significantly greater for women than men with either complete ( P =.035) or incomplete ( P =.031) injuries. Functional comparison of men and women, using the FIM motor subscale, revealed that men had higher FIM motor scores at rehabilitation discharge among those with motor-complete injuries, except for those with C1-4 and C6 neurologic levels. Women with motor-incomplete high tetraplegia (C1-4 levels) had higher discharge FIM motor scores than did similarly afflicted men. There were no significant differences in FIM motor scores among men and women with other levels of motor incomplete SCI. CONCLUSIONS: Gender differences in SCI were seen in several areas. Women may have more natural neurologic recovery than men; however, for a given level and degree of neurologic injury, men tend to do better functionally than women at time of discharge from rehabilitation. Future prospective study of the effects of estrogen on neurologic recovery and the effects of gender on functional potential are recommended.     

Predictors of life satisfaction: a spinal cord injury cohort study

OBJECTIVE: To determine unique demographic, medical, perceived health, and handicap predictors of life satisfaction 2 years after spinal cord injury (SCI), as well as the predictors of change in life satisfaction from year 1 to year 2. DESIGN: Prospective predictive study performed by using longitudinal data from 18 Spinal Cord Injury Model Systems. SETTING: University physical medicine and rehabilitation department. PARTICIPANTS: Adults with traumatic onset SCI (N = 940) evaluated at 1 and 2 years' postinjury. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Satisfaction with Life Scale (SWLS) 2 years post-SCI. Predictor variables: demographic characteristics, impairment and disability classifications, and 1 year post-SCI measures of life satisfaction (SWLS), medical complications, self-perceived health (Medical Outcomes Study 12-Item Short-Form Health Survey), and extent of handicap (Craig Handicap Assessment and Reporting Technique). RESULTS: The factors uniquely associated with an increased risk of lower self-reported life satisfaction at year 2 post-SCI included being male and unemployed, with poor perceived health, decreased mobility, and decreased social integration. After controlling for year 1 estimates of life satisfaction (ie, examining change in life satisfaction), only mobility and perceived health were uniquely related to life satisfaction 2 years post-SCI. CONCLUSION: Mobility and perceived health appear to be the consistent predictors of life satisfaction at year 2 post-SCI, as well as change in satisfaction from year 1 to year 2. Because both factors are amenable to change, they are reasonable targets of intervention programs. Identifying specific mechanisms of perceived health and mobility associated with life satisfaction should be an important area of continued research.     

Gender and minority differences in the pain experience of people with spinal cord injury

OBJECTIVES: To examine gender and minority differences in the prevalence and severity of pain in people with traumatic-onset spinal cord injury (SCI) during follow-up, and to determine the relation of those differences to demographic characteristics, etiology of injury, and level and extent of the lesion. DESIGN: Survey and analysis of cross-sectional data using case-control methodology and multiple regression methods. SETTING: Model Spinal Cord Injury Systems (MSCIS). PARTICIPANTS: A total of 7379 individuals with traumatic-onset SCI from 16 MSCIS entered in the National Spinal Cord Injury Statistical Center database between 1998 and 2002. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Prevalence and severity of pain as reported in follow-up surveys. RESULTS: Pain prevalence remained fairly stable over time, ranging from 81% at 1 year postinjury to 82.7% at 25 years. Pain was no more common in women than in men, nor did pain severity scores differ significantly. However, pain prevalence was significantly lower among nonwhites, although they tended to report a higher average pain severity score when pain was present. Also, people with SCI who were employed when injured, who had more than a high school education, and who were not tetraplegic reported a higher prevalence of pain. Pain interfered with work more often for women and nonwhites during some, but not all, follow-up years, and for those who were not employed at the time of interview, for those whose SCI was caused by violence, for those with paraplegia, and for those with incomplete SCI. CONCLUSIONS: Pain is a common and significant problem for the majority of people with SCI. It may interfere less frequently with work over time, which suggests that an adaptive process may be occurring. Gender differences in the pain experience did not emerge, but nonwhites tended to have a lower prevalence of pain. If pain was present, nonwhites tended to report more severe pain than did whites. Further research is needed to delineate the possible psychosocial and biomedical causes of these findings.     

Aging with spinal cord injury: changes in selected health indices and life satisfaction

OBJECTIVES: To document the impact of age, age at injury, years postinjury, and injury severity on changes over time in selected physical and psychosocial outcomes of people aging with spinal cord injury (SCI), and to identify the best predictors of these outcomes. DESIGN: Retrospective cross-sectional and longitudinal examination of people with SCI. SETTING: Follow-up of people who received initial rehabilitation in a regional Model Spinal Cord Injury System. PARTICIPANTS: People who meet the inclusion criteria for the National Spinal Cord Injury Database were studied at 5, 10, 15, 20, and 25 years postinjury. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Number of pressure ulcers, number of times rehospitalized, number of days rehospitalized, perceived health status, satisfaction with life, and pain during the most recent follow-up year. RESULTS: The number of days rehospitalized and frequency of rehospitalizations decreased and the number of pressure ulcers increased as time passed. For the variables of pressure ulcers, poor perceived health, the perception of pain and lower life satisfaction, the best predictor of each outcome was the previous existence or poor rating of that same outcome. CONCLUSIONS: Common complications of SCI often herald the recurrence of those same complications at a later point in time, highlighting the importance of early intervention to prevent future health and psychosocial difficulties.     

Quality of life after spinal cord injury caused by gunshot.

OBJECTIVE: To determine what effect gunshot-caused spinal cord injury (SCI) has on self-reported quality of life (QOL) and on the frequency of pain sufficient to interfere with day-to-day activities. DESIGN: Follow-up, case-control design. SETTING: Analysis of data obtained from the (US) National Spinal Cord Injury Statistical Center from 18 funded Spinal Cord Injury Model Systems. PARTICIPANTS: Individuals with traumatic onset SCI (n = 1901). From these, 111 persons with gunshot-caused SCI were matched to persons with nongunshot SCI. MAIN OUTCOME MEASURES: Satisfaction with Life Scale (SWLS), the Craig Handicap Assessment and Reporting Technique (CHART), Medical Outcomes Study Short-Form Health Survey (SF-12), and an individual pain item from the SF-12. RESULTS: No between-group differences were found on any of the QOL outcome measures. In contrast, those with SCI caused by gunshot reported that pain more frequently interfered with day-to-day activities than the matched comparison group. CONCLUSIONS: SCI caused by gunshot appears largely unrelated to QOL, after controlling for demographic and medical characteristics associated with this group. Gunshot as a mechanism of SCI may place individuals at an increased risk of subsequent development of pain that interferes with activities of daily living.     

Recent demographic and injury trends in people served by the Model Spinal Cord Injury Care Systems

OBJECTIVE: To identify trends in the demographic and injury data of persons with spinal cord injury (SCI). DESIGN: Consecutive case series. SETTINGS: Model Spinal Cord Injury Care Systems throughout the United States. PATIENTS: A total of 25,054 persons admitted to a Model Spinal Cord Injury Care System within 365 days of injury between 1973 and 1998. RESULTS: Many trends and changes have been noted in the clinical features of patients who have been admitted to the Model SCI Care Systems. Average age at time of injury is rising; persons older than 60 comprise 11.5% of all persons enrolled in the National Database during the 1994-1998 period. Although the overall male-to-female ratio is greater than 4:1, the proportion of males has decreased significantly in recent years. Violence-related injuries have increased dramatically from 13.9% in 1973-1977 to 21.8% in 1994-1998. Since 1973, the proportions of injuries resulting from vehicular crashes and sports declined while injuries from falls increased. Injury continues to occur most commonly in the summer. When age, race, and gender are considered, violence is a more common cause of injury among individuals who are younger, male, or African American. Complete injuries were more common among younger individuals and among men than among older adults and women. CONCLUSION: Trends in the national database provide valuable data for tracking groups at risk for traumatic SCI.     

Comparison of Life Satisfaction in Persons With Spinal Cord Injury Living in 22 Countries With Different Economic Status

ObjectiveTo analyze and compare life satisfaction (LS) in persons with spinal cord injury (SCI) living in 22 countries participating in the International Spinal Cord Injury (InSCI) community survey. The study tested the hypothesis that there are differences in LS across InSCI countries according to the countries’ economic status specified as gross domestic product per capita purchased power parity (GDP-PPP).DesignCross-sectional survey.SettingCommunity setting (22 countries representing all 6 World Health Organization regions).ParticipantsPersons (N=12,108) with traumatic or nontraumatic SCI aged at least 18 years, living in the community and able to respond to one of the available language versions of the questionnaire.InterventionsNot applicable.Main Outcome MeasuresLS measured by 5 items selected from the World Health Organization Quality of Life Assessment-BREF: satisfaction with overall quality of life, health, daily activities, relationships, and living conditions. LS index was calculated as the mean of these 5 items.ResultsThe highest level of LS was reported by persons with SCI living in the United States, Malaysia, and Switzerland (mean range, 3.76-3.80), and the lowest was reported by persons with SCI living in South Korea, Japan, and Morocco (mean range, 2.81-3.16). There was a significant cubic association between LS index and GDP-PPP. Regression tree analysis revealed the main variables differentiating LS index were GDP-PPP and monthly income, followed by time since injury and education.ConclusionsLife satisfaction reported by persons with SCI related mainly to their country economic situation expressed by GDP-PPP and monthly income. The results of this study underscore the need for policy dialogues to avoid inequalities and improve the life experience in persons with SCI.     

Access to the environment and life satisfaction after spinal cord injury

OBJECTIVE: To determine the potential relation between satisfaction with life after spinal cord injury and access to the environment as measured by selected items from the Craig Handicap Assessment and Reporting Technique (CHART). DESIGN: Prospective, correlational/predictive study using cross-sectional and longitudinal data from 18 Model Spinal Cord Injury Systems of Care. SUBJECTS: Adult persons with traumatic-onset spinal cord injury (n = 650) evaluated at 1 or 2 years postinjury. OUTCOME MEASURE: Satisfaction With Life Scale (SWLS). PREDICTOR VARIABLES: Demographic characteristics, impairment and disability classifications. medical complications, rehabilitation insurance status, occupational status as measured by the CHART Occupation Scale, self-perceived health (from SF-36), and access to the environment as measured by items from the CHART Mobility Scale. RESULTS: Access to the environment was positively and linearly associated with satisfaction with life, demonstrated both positive and negative change over time, and was positively associated with subject's neurologic status. Access to the environment added to the explanatory model to predict life satisfaction even after all other independent measures were accounted for. CONCLUSION: Access to the environment (an "outside the person" factor) is important in predicting satisfaction with life for persons with spinal cord injury. The measure of access to the environment developed here is promising and worthy of further exploration and expansion.     

Predicting community reintegration after spinal cord injury from demographic and injury characteristics

OBJECTIVE: To determine the influence of demographic and injury characteristics on the community reintegration of people with spinal cord injury (SCI). DESIGN: Prospective cross-sectional and longitudinal examination of individuals with SCI. SETTING: Follow-up of individuals at 1, 2, 5, 10, 15, and 20 years after SCI who received their initial rehabilitation in a Regional Model Spinal Cord Injury System. PARTICIPANTS: A total of 3,835 individuals who met the inclusion criteria for the National SCI Database were studied cross-sectionally, and a subset of 347 individuals who were also enrolled in a longitudinal study of aging with SCI. MAIN OUTCOME MEASURES: Subscales of the Craig Handicap Assessment and Reporting Technique (CHART). RESULTS: Neurologic classification, age, years postinjury, gender, ethnicity, and education explain 29% of the variance in physical independence, 29% of the variance in mobility, 28% of the variance in occupation. 9% of the variance in social integration, and 18% of the variance in economic self-sufficiency. CONCLUSIONS: Although these factors are inadequate to explain most of the variation in community reintegration (handicap) after SCI, they might appropriately be used to adjust for case-mix differences when comparing rehabilitation facilities and techniques.