Inpatient Rehabilitation Facility Ownership Type Yields Mixed Performances on Quality Measures.

OBJECTIVE: To evaluate the effects of inpatient rehabilitation facility (IRF) ownership type on IRF-Quality Reporting Program (IRF-QRP) measures. DESIGN: Cross-sectional, observational design. SETTING: We used 2 Centers for Medicare and Medicare publicly-available, facility-level data sources: (1) IRF compare files and (2) IRF rate setting files - final rule. Data from 2021 were included. PARTICIPANTS: The study sample included 1092 IRFs (N=1092). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: We estimated the effects of IRF ownership type, defined as for-profit and nonprofit, on 15 IRF-QRP measures using general linear models. Models were adjusted for the following facility-level characteristics: (1) Centers for Medicare and Medicaid census divisions; (2) number of discharges; (3) teaching status; (4) freestanding vs hospital unit; and (5) estimated average weight per discharge. RESULTS: Ownership type was significantly associated with 9 out of the fifteen IRF-QRP measures. Nonprofit IRFs performed better with having lower readmissions rates within stay and 30-day post discharge. For-profit IRFs performed better for all the functional measures and with higher rates of returning to home and the community. Lastly, for-profit IRFs spent more per Medicare beneficiary. CONCLUSIONS: Ideally, IRF performance would not vary based on ownership type. However, we found that ownership type is associated with IRF-QRP performance scores. We suggest that future studies investigate how ownership type affects patient-level outcomes and the longitudinal effect of ownership type on IRF-QRP measures.

Development of a Short Form Assessment Combining the Fugl-Meyer Assessment-Upper Extremity and the Wolf Motor Function Test for Evaluating Stroke Recovery.

OBJECTIVE: To use Rasch methodologies to combine the items of the Fugl-Meyer Assessment-Upper Extremity (FMA-UE, motor skill) and the Wolf Motor Function Test (WMFT, motor function) onto a single measurement metric and create an FMA-UE+WMFT short form. DESIGN: Secondary analysis of preintervention data from 2 upper extremity stroke rehabilitation trials. Confirmatory factor analysis and Rasch rating scale analysis were first applied to examine the properties of the pooled item bank and then item response theory methodologies were used to develop the short form. Confirmatory factor analysis and Rasch analysis were then applied to the short form to examine the dimensionality and measurement properties. SETTING: Outpatient academic medical research center. PARTICIPANTS: Data from 167 participants who completed the FMA-UE and WMFT (rating scale score) were pooled (N=167). Participants were eligible if they had a stroke ≥3 months prior and had upper extremity (UE) hemiparesis and excluded if they had severe UE hemiparesis, severe UE spasticity, or UE pain. INTERVENTION: Not applicable. MAIN OUTCOME MEASURES: The dimensionality and measurement properties of the pooled 30-item FMA-UE and the 15-item WMFT and short form were examined. RESULTS: Five items from the pool of 45 items were misfit and were removed. The 40-item pool demonstrated adequate measurement properties. A 15-item short form was then developed and met rating diagnostic scale criteria. All items on the 15-item short form met the Rasch fit criteria, and the assessment met criteria for reliability (Cronbach alpha=.94), separation (person separation = 3.7), and strata (number of strata = 5). CONCLUSIONS: Items from the FMA-UE and WMFT can be pooled to create a psychometrically sound 15-item short form.

Addressing non-response data for standardized post-acute functional items.

BACKGROUND: The post-acute patient standardized functional items (Section GG) include non-response options such as refuse, not attempt and not applicable. We examined non-response patterns and compared four methods to address non-response functional data in Section GG at nation-wide inpatient rehabilitation facilities (IRF). METHODS: We characterized non-response patterns using 100% Medicare 2018 data. We applied four methods to generate imputed values for each non-response functional item of each patient: Monte Carlo Markov Chains multiple imputations (MCMC), Fully Conditional Specification multiple imputations (FCS), Pattern-mixture model (PMM) multiple imputations and the Centers for Medicare and Medicaid Services (CMS) approach. We compared changes of Spearman correlations and weighted kappa between Section GG and the site-specific functional items across impairments before and after applying four methods. RESULTS: One hundred fifty-nine thousand six hundred ninety-one Medicare fee-for-services beneficiaries admitted to IRFs with stroke, brain dysfunction, neurologic condition, orthopedic disorders, and debility. At discharge, 3.9% (self-care) and 61.6% (mobility) of IRF patients had at least one non-response answer in Section GG. Patients tended to have non-response data due to refused at discharge than at admission. Patients with non-response data tended to have worse function, especially in mobility; also improved less functionally compared to patients without non-response data. Overall, patients coded as 'refused' were more functionally independent in self-care and patients coded as 'not applicable' were more functionally independent in transfer and mobility, compared to other non-response answers. Four methods showed similar changes in correlations and agreements between Section GG and the site-specific functional items, but variations exist across impairments between multiple imputations and the CMS approach. CONCLUSIONS: The different reasons for non-response answers are correlated with varied functional status. The high proportion of patients with non-response data for mobility items raised a concern of biased IRF quality reporting. Our findings have potential implications for improving patient care, outcomes, quality reporting, and payment across post-acute settings.

Assigning lifetime occupation domains for older Mexicans: MHAS-O*NET linkage protocol.

OBJECTIVE: We developed a MHAS (Mexican Health and Aging Study) and O*NET (Occupational Information Network) linkage to allow global researchers using MHAS data to assign lifetime occupation domains for older Mexicans. MATERIALS AND METHODS: Three bilingual raters independently matched 440 records with 132 unique occupation codes from the 2012 MHAS. We used a modified Delphi technique to reach agreements. To assess reliability, we compared the distribution of observations between the MHAS file and the MHAS-O*NET linked file across five job categories (upper white collar, lower white collar, upper blue collar, low blue collar, and agriculture/fishing/forestry). The Institutional Review Board at the University of Texas Medical Branch reviewed and approved the research (IRB # 21-0268). RESULTS: Using the developed 1:1 MHAS-ONET linkage, consistency between MHAS and ONET was 97.4% across the five job categories. CONCLUSION: This MHAS-O*NET linkage will allow researchers to analyze the association between lifetime occupation and multiple dimensions of health, functionality, and retirement determinants for a low-middle income country with a large proportion of workers in the informal sector.

Using Machine Learning to Develop a Short-Form Measure Assessing 5 Functions in Patients With Stroke.

OBJECTIVE: This study aimed to develop and validate a machine learning-based short measure to assess 5 functions (the ML-5F) (activities of daily living [ADL], balance, upper extremity [UE] and lower extremity [LE] motor function, and mobility) in patients with stroke. DESIGN: Secondary data from a previous study. A follow-up study assessed patients with stroke using the Barthel Index (BI), Postural Assessment Scale for Stroke (PASS), and Stroke Rehabilitation Assessment of Movement (STREAM) at hospital admission and discharge. SETTING: A rehabilitation unit in a medical center. PARTICIPANTS: Patients (N=307) with stroke. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: The BI, PASS, and STREAM. RESULTS: A machine learning algorithm, Extreme Gradient Boosting, was used to select 15 items from the BI, PASS, and STREAM, and transformed the raw scores of the selected items into the scores of the ML-5F. The ML-5F demonstrated good concurrent validity (Pearson's r, 0.88-0.98) and responsiveness (standardized response mean, 0.28-1.01). CONCLUSIONS: The ML-5F comprises only 15 items but demonstrates sufficient concurrent validity and responsiveness to assess ADL, balance, UE and LE functions, and mobility in patients with stroke. The ML-5F shows great potential as an efficient outcome measure in clinical settings.

Health Services Research and Occupational Therapy: Ensuring Quality and Cost-Effectiveness.

Health services research focuses on access, quality, and cost-effectiveness of care. As a result of increasing emphasis on value-based reimbursement models, conducting health services research to demonstrate the value of occupational therapy is timely. This special issue serves to highlight health services research relevant to occupational therapy practice. Articles included in this special issue describe (1) clients' access to and use of occupational therapy, (2) the effects of occupational therapy on important quality-of-care indicators and client outcomes, and (3) the value of occupational therapy services through the lens of cost-effectiveness. This special issue illustrates the state of health services research in the field of occupational therapy and reveals key insights to advance occupational therapy practice using health services research.

Post-acute care use patterns among Hospital Service Areas by older adults in the United States: a cross-sectional study.

BACKGROUND: Despite the success of stroke rehabilitation services, differences in service utilization exist. Some patients with stroke may travel across regions to receive necessary care prescribed by their physician. It is unknown how availability and combinations of post-acute care facilities in local healthcare markets influence use patterns. We present the distribution of skilled nursing, inpatient rehabilitation, and long-term care hospital services across Hospital Service Areas among a national stroke cohort, and we describe drivers of post-acute care service use. METHODS: We extracted data from 2013 to 2014 of a national stroke cohort using Medicare beneficiaries (174,498 total records across 3232 Hospital Service Areas). Patients' ZIP code of residence was linked to the facility ZIP code where care was received. If the patient did not live in the Hospital Service Area where they received care, they were considered a "traveler". We performed multivariable logistic regression to regress traveling status on the care combinations available where the patient lived. RESULTS: Although 73.4% of all Hospital Service Areas were skilled nursing-only, only 23.5% of all patients received care in skilled nursing-only Hospital Service Areas; 40.8% of all patients received care in Hospital Service Areas with only inpatient rehabilitation and skilled nursing, which represented only 18.2% of all Hospital Service Areas. Thirty-five percent of patients traveled to a different Hospital Service Area from where they lived. Regarding "travelers," for those living in a skilled nursing-only Hospital Service Area, 49.9% traveled for care to Hospital Service Areas with only inpatient rehabilitation and skilled nursing. Patients living in skilled nursing-only Hospital Service Areas had more than five times higher odds of traveling compared to those living in Hospital Service Areas with all three facilities. CONCLUSIONS: Geographically, the vast majority of Hospital Service Areas in the United States that provided rehabilitation services for stroke survivors were skilled nursing-only. However, only about one-third lived in skilled nursing-only Hospital Service Areas; over 35% traveled to receive care. Geographic variation exists in post-acute care; this study provides a foundation to better quantify its drivers. This study presents previously undescribed drivers of variation in post-acute care service utilization among Medicare beneficiaries-the "traveler effect".

Supporting Occupational Justice for Transgender and Gender-Nonconforming People Through Narrative-Informed Theater: A Mixed-Methods Feasibility Study.

IMPORTANCE: Societal stigma gravely impedes occupational justice for transgender and gender-nonconforming (TGNC) people, producing vast health disparities for this population. OBJECTIVE: To test the feasibility of an intervention to reduce stigma and improve the well-being of TGNC people. DESIGN: A parallel, mixed-methods design was used to test feasibility in the areas of acceptability, demand, and limited efficacy. SETTING: Community. PARTICIPANTS: Forty-two audience members and 5 TGNC interviewees. INTERVENTION: Virtual, narrative-informed play reading and moderated discussion about gender diversity and affirmative care. Outcomes and Measures: The valid and reliable Acceptance and Action Questionnaire-Stigma was used to assess stigma beliefs. An open-ended, qualitative question assessed TGNC interviewees' experiences. RESULTS: Recruitment and participant responses to the intervention indicated feasibility in the areas of acceptability, demand, and limited efficacy. However, future efforts at obtaining a diverse TGNC sample are needed. CONCLUSIONS AND RELEVANCE: The intervention decreased stigma beliefs in audience members and offered a positive experience for TGNC participants. Feasibility outcomes warrant future efficacy testing. What This Article Adds: This article adds an innovative intervention for promoting occupational justice to support the health and well-being of TGNC people. The community-based intervention facilitates change in societal attitudes and stigmatizing beliefs.

Addressing the Gap: Occupational Therapy in Hospice Care.

Patients receiving hospice care have a host of occupational challenges, though few are being seen in occupational therapy for treatment. Occupational therapy can help those receiving hospice care live with dignity before death. Data retrieved from the National Home and Hospice Care Survey were analyzed using independent t-tests, Wilcoxon rank-sum tests, Chi-square tests and logistic regressions. Only 10.6% of the participants received occupational therapy. Patients who received occupational therapy were significantly older and had shorter lengths of hospice care service compared to their counterparts. Over 85% of the patients needed assistance with at least one task of activity of daily living (ADL). Findings suggested a need to increase occupational therapy workforce in hospice care and advocate the value of occupational therapy services in hospice settings.

Frailty transitions predict healthcare use and Medicare payments in older Mexican Americans: a longitudinal cohort study.

BACKGROUND: Little is known regarding the impact of transitions in frailty on healthcare use and payment in older Mexican Americans. We address this gap in knowledge by investigating the effect of early transitions in physical frailty on the use of healthcare services and Medicare payments involving older Mexican Americans. METHODS: Longitudinal analyses were conducted using the Hispanic Established Populations for the Epidemiological Study of the Elderly (Hispanic-EPESE) survey data from five Southwest states linked to the Medicare claims files from the Centers for Medicare and Medicaid Services. Seven hundred and eighty-eight community-dwelling Mexican Americans 72 years and older in 2000/01 were studied. We used a modified Frailty Phenotype (unintentional weight loss, weakness, self-reported exhaustion and slow walking speed) to classify frailty status (non-frail, pre-frail or frail). Each participant was placed into one of 5 frailty transition groups: 1) remain non-frail, 2) remain pre-frail, 3) remain frail, 4) improve (pre-frail to non-frail, frail to non-frail, frail to pre-frail) and 5) worse (non-frail to pre-frail, non-frail to frail, pre-frail to frail). The outcomes for the one-year follow-up period (2000-2001) were: (a) healthcare use (hospitalization, emergency room [ER] admission and physician visit); and (b) Medicare payments (total payment and outpatient payment). RESULTS: Mean age was 78.8 (SD = 5.1) years and 60.3% were female in 1998/99. Males who remained pre-frail (Odds Ratio [OR] = 3.49, 1.13-10.8, remained frail OR = 6.92, 1.61-29.7) and transitioned to worse frail status (OR = 4.49, 1.74-11.6) had significantly higher hospitalization risk compared to individuals who remained non-frail. Males in the 'worsened' groups, and females in the 'improved' groups, had significantly higher Medicare payments than individuals who remained non-frail (Cost Ratio [CR] = 2.00, 1.30-3.09; CR = 1.53, 1.12-2.09, respectively]. CONCLUSIONS: Healthcare use and Medicare payments differed by frailty transition status. The differences varied by sex. Research is necessary to elucidate the relationship between frailty transitions and outcomes, sex difference and Medicare payment for older Mexican Americans living in the community.

Use of the ICD-10 vision codes to study ocular conditions in Medicare beneficiaries with stroke.

BACKGROUND: Ocular conditions are common following stroke and frequently occur in combination with pre-existing ophthalmologic disease. The Medicare International Statistical Classification of Diseases and Related Health Problems (ICD-10) coding system for identifying vision related health conditions provides a much higher level of detail for coding these complex scenarios than the previous ICD-9 system. While this new coding system has advantages for clinical care and billing, the degree to which providers and researchers are utilizing the expanded code structure is unknown. The purpose of this study was to describe the use of ICD-10 vision codes in a large cohort of stroke survivors. METHODS: Retrospective cohort design to study national 100% Medicare claims files from 2015 through 2017. Descriptive data analyses were conducted using all available ICD-10 vision codes for beneficiaries who had an acute care stay because of a new stroke. The outcome of interest was ≥1 ICD-10 visual code recorded in the claims chart. RESULTS: The cohort (n = 269,314) was mostly female (57.1%) with ischemic stroke (87.8%). Approximately 15% were coded as having one or more ocular condition. Unspecified glaucoma was the most frequently used code among men (2.83%), those over 85+ (4.80%) and black beneficiaries (4.12%). Multiple vision codes were used in few patients (0.6%). Less than 3% of those in the oldest group (85+ years) had two or more vision codes in their claims. CONCLUSIONS: Ocular comorbidity was present in a portion of this cohort of stroke survivors, however the vision codes used to describe impairments in this population were few and lacked specificity. Future studies should compare ophthalmic examination results with billing codes to characterize the type and frequency of ocular comorbidity. It important to understand how the use of ICD-10 vision codes impacts clinical decision making, recovery, and outcomes.

Validation of the 10-item Center for Epidemiologic Studies Depression Scale Post Stroke.

OBJECTIVE: To establish reliability and validity of the abbreviated (10-item) Center for Epidemiologic Studies Depression Scale (CESD-10) among individuals post stroke. METHOD: The psychometric properties of the CESD-10 were evaluated in 1219 adults with stroke admitted to an eligible inpatient rehabilitation facilities (n = 11) across 9 different states post stroke during 2005 to 2006. This study was a secondary data analysis of the existing publicly available clinical trial dataset, Stroke Recovery in Underserved Populations study. Reliability, validity, factory structure and item-level psychometrics of the CESD-10 were examined. In addition, the predictive accuracy of the CESD-10 was compared against the CESD-20 (criterion). RESULTS: The CESD-10 was highly correlated with the CESD-20 (r = 0.97). The CESD-10 had good internal reliability (Cronbach's α = 0.86). The CESD-20 and CESD-10 had similar accuracy in classifying individuals as depressed (Kappa = 0.85). CONCLUSION: The 10-item CESD is a valid measure of depression for individuals post stroke.

Responsiveness of Life Participation for Parents (LPP®): A Tool for Family-Centered Rehabilitation.

Aims:The Life Participation for Parents (LPP®) is a Quality of Life assessment designed to measure family-centered practice outcomes. Previous studies of the LPP have established its internal consistency (Cronbach's alpha = .85), test-retest reliability (r = .89), construct validity, and concurrent validity. This study examined the responsiveness of the LPP, hypothesizing change scores after 3 months of intervention would exceed that explained by standard error. Methods: Thirty-two parents of children with disabilities completed the LPP to identify family-centered issues. The LPP was completed a second time after 3 months of intervention. Wilcoxon Signed Rank test was used to compare the median differences between two administrations. Minimal clinically important differences (MCID) were calculated for the total and two LPP subscales (efficiency and effectiveness). Cohen's effect size was calculated using the standardized response mean (SRM) to quantify the change. Results: The age range of the parents was 31-50 (72%), including 31 mothers (96.9%). Median differences between the two administrations were significantly different (p < .05). The MCID were 11.34, 9.82, and 4.48; the SRM were 0.42, 0.54, and 0.04, for the LPP total score, efficiency subscale and effectiveness subscale, respectively. Conclusions: The LPP is responsive to detect a change larger than measurement error in parental ability of participating in life occupations while raising a child with disabilities.

Effects of Age and Sex on Hospital Readmission in Traumatic Brain Injury.

OBJECTIVE: To investigate the effects of age and sex on 30-, 60-, and 90-day hospital readmission after acute hospital discharge for individuals with traumatic brain injury (TBI). DESIGN: Retrospective cohort study. SETTING: Acute hospitals and postacute discharge settings. PARTICIPANTS: Individuals (N=52,877) with Diagnosis Related Group codes of TBI, who were divided into 4 age groups: 18 to 40, 41 to 65, 66 to 75, and ≥76 years. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: All-cause hospital readmission. RESULTS: Sex differences in 30-, 60-, and 90-day hospital readmission were found among all age groups (P<.05 for all). The largest sex differences in hospital readmission were in the 2 oldest groups (66-75 and ≥76y). For both sexes, the oldest group (≥76y) had the highest adjusted 90-day readmission risk (eg, 90-d readmission: odds ratio, 2.32 [95% confidence interval, 2.01-2.69] for men; odds ratio, 1.96 [95% confidence interval, 1.59-2.43] for women). Among those readmitted within 90 days, the youngest group (18-40y) had the highest cumulative readmission percentage (35% for both sexes) within the first week of hospital discharge. CONCLUSIONS: Age and sex were significantly associated with hospital readmission during the first 90 days postdischarge in our TBI sample. Specifically, those aged 66 to 75 or ≥76 years had the highest readmission risk over 90 days for both sexes. The findings suggest that clinicians should consider age and sex in discharge planning and for the entire episode of care for the population with TBI.

Is Profit Status of Inpatient Rehabilitation Facilities Independently Associated With 30-Day Unplanned Hospital Readmission for Medicare Beneficiaries?

OBJECTIVE: To investigate the effects of facility-level factors on 30-day unplanned risk-adjusted hospital readmission after discharge from inpatient rehabilitation facilities (IRFs). DESIGN: Study using 100% Medicare claims data, covering 269,306 discharges from 1094 IRFs between October 2010 and September 2011. SETTING: IRFs with at least 30 discharges. PARTICIPANTS: A total number of 1094 IRFs (N=269,306) serving Medicare fee-for-service beneficiaries. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Risk-standardized readmission rate (RSRR) for 30-day hospital readmission. RESULTS: Profit status was the only provider-level IRF characteristic significantly associated with unplanned readmissions. For-profit IRFs had a significantly higher RSRR (13.26±0.51) than did nonprofit IRFs (13.15±0.47) (P<.001). After controlling for all other facility characteristics (except for accreditation status because of its collinearity with facility type), for-profit IRFs had a 0.1% point higher RSRR than did nonprofit IRFs, and census region was the only significant region-level characteristic, with the South showing the highest RSRR of all regions (type III test, P=.005 for both). CONCLUSIONS: Our findings support the inclusion of profit status on the IRF Compare website (a platform including IRF comparators to indicate quality of services). For-profit IRFs had a higher RSRR than did nonprofit IRFs for Medicare beneficiaries. The South had a higher RSRR than did other regions. The RSRR difference between for-profit and nonprofit IRFs could be due to the combined effects of organizational and regional factors.

FIM-Minimum Data Set Motor Item Bank: Short Forms Development and Precision Comparison in Veterans.

OBJECTIVE: To improve the practical use of the short forms (SFs) developed from the item bank, we compared the measurement precision of the 4- and 8-item SFs generated from a motor item bank composed of the FIM and the Minimum Data Set (MDS). DESIGN: The FIM-MDS motor item bank allowed scores generated from different instruments to be co-calibrated. The 4- and 8-item SFs were developed based on Rasch analysis procedures. This article compared person strata, ceiling/floor effects, and test SE plots for each administration form and examined 95% confidence interval error bands of anchored person measures with the corresponding SFs. We used 0.3 SE as a criterion to reflect a reliability level of .90. SETTING: Veterans' inpatient rehabilitation facilities and community living centers. PARTICIPANTS: Veterans (N=2500) who had both FIM and the MDS data within 6 days during 2008 through 2010. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Four- and 8-item SFs of FIM, MDS, and FIM-MDS motor item bank. RESULTS: Six SFs were generated with 4 and 8 items across a range of difficulty levels from the FIM-MDS motor item bank. The three 8-item SFs all had higher correlations with the item bank (r=.82-.95), higher person strata, and less test error than the corresponding 4-item SFs (r=.80-.90). The three 4-item SFs did not meet the criteria of SE <0.3 for any theta values. CONCLUSIONS: Eight-item SFs could improve clinical use of the item bank composed of existing instruments across the continuum of care in veterans. We also found that the number of items, not test specificity, determines the precision of the instrument.

Impact of Multiple Chronic Conditions on Activity Limitations Among Older Mexican-American Care Recipients.

INTRODUCTION: Older Mexican Americans are living longer with multiple chronic conditions (MCCs). This has placed greater demands on caregivers to assist with basic activities of daily living (ADL) or instrumental activities of daily living (IADL). To understand the needs of older Mexican-American care recipients, we examined the impact of MCC on ADL and IADL limitations. METHODS: We analyzed data from 485 Mexican American care-receiving/caregiving dyads. Selected MCCs in the analysis were diabetes, hypertension, stroke, heart disease, arthritis, emphysema/chronic obstructive pulmonary disease, cognitive impairment, depression, and cancer. Care recipients were dichotomized as having 3 or more conditions or as having 2 or fewer conditions. Three comorbidity clusters were established on the basis of the most prevalent health conditions among participants with comorbid arthritis and hypertension. These clusters included arthritis and hypertension plus: diabetes (cluster 1), cognitive impairment (cluster 2), and heart disease (cluster 3). RESULTS: Care recipients with 3 or more chronic conditions (n = 314) had higher odds of having mobility limitations (OR = 1.98; 95% CI, 1.34-2.94), self-care limitations (OR = 2.53; 95% CI, 1.70-3.81), >3 ADL limitations (OR = 2.00; 95% CI, 1.28-3.17), and >3 IADL limitations (OR = 1.88; 95% CI, 1.26-2.81). All clusters had increased odds of ADL and severe ADL limitations. Of care recipients in cluster 2, those with arthritis, hypertension, and cognitive impairment had significantly higher odds of mobility limitations (OR = 2.33; 95% CI, 1.05-5.24) than those with just arthritis and hypertension. CONCLUSION: MCCs were associated with more ADL and IADL limitations among care recipients, especially for those with hypertension and arthritis plus diabetes, cognitive impairment, or heart disease. These findings can assist in developing programs to meet the needs of older Mexican-American care recipients.

Linking existing instruments to develop a continuum of care measure: accuracy comparison using function-related group classification.

PURPOSES: To compare measurement accuracy of test forms with varied number of items (13, 8, and 4 items) generated from the self-care physical function item bank composed of Functional Independence Measure (FIM™) and the Minimum Data Set (MDS). METHODS: Retrospective data analysis of 2499 Veterans who completed both FIM and MDS within 6 days. We compared measurement accuracy between the converted FIM (FIMc) motor score generated from the MDS and the original FIM (FIMa) motor score (13 items) at: (a) individual-level using point differences, and (b) group-level using function-related group (FRG). RESULTS: The differences of mean FIMa and FIMc scores were between 0.05 and 1.07 points for all test forms. Over 81% of FIMc from MDS_13 were within 15 points of the FIMa. 81-90% of FRGs generated by the FIM short forms was identical to those generated by the FIMa for stroke, lower limb amputation, knee and hip replacement; and 59.9-90.5% by all MDS test forms. All MDS test forms had above 74% agreement with same or adjacent FMGs (ICC 0.65-0.91). CONCLUSIONS: The accuracy is dependent on the comparison level (i.e., individual or group), length of the test and which FRG is used. Our results partially support using existing instruments-without decreasing the number of the items-to generate a continuum of care measurement.

Assessment of the psychometrics of a PROMIS item bank: self-efficacy for managing daily activities.

PURPOSE: The aim of this study is to investigate the psychometrics of the Patient-Reported Outcomes Measurement Information System self-efficacy for managing daily activities item bank. METHODS: The item pool was field tested on a sample of 1087 participants via internet (n = 250) and in-clinic (n = 837) surveys. All participants reported having at least one chronic health condition. The 35 item pool was investigated for dimensionality (confirmatory factor analyses, CFA and exploratory factor analysis, EFA), item-total correlations, local independence, precision, and differential item functioning (DIF) across gender, race, ethnicity, age groups, data collection modes, and neurological chronic conditions (McFadden Pseudo R (2) less than 10 %). RESULTS: The item pool met two of the four CFA fit criteria (CFI = 0.952 and SRMR = 0.07). EFA analysis found a dominant first factor (eigenvalue = 24.34) and the ratio of first to second eigenvalue was 12.4. The item pool demonstrated good item-total correlations (0.59-0.85) and acceptable internal consistency (Cronbach's alpha = 0.97). The item pool maintained its precision (reliability over 0.90) across a wide range of theta (3.70), and there was no significant DIF. CONCLUSION: The findings indicated the item pool has sound psychometric properties and the test items are eligible for development of computerized adaptive testing and short forms.

Dimensionality and Item-Difficulty Hierarchy of the Lower Extremity Fugl-Meyer Assessment in Individuals With Subacute and Chronic Stroke.

OBJECTIVE: To investigate the dimensionality and item-difficulty hierarchy of the Fugl-Meyer Assessment of the lower extremity (FMA-LE). DESIGN: Secondary analyses of data pooled from 4 existing datasets: a phase III randomized controlled trial investigating the effectiveness of body weight support and a treadmill for rehabilitation of walking poststroke, and 3 cross-sectional studies investigating the link between impaired motor performance poststroke and walking. SETTING: University research centers and rehabilitation centers. PARTICIPANTS: A pooled sample of individuals with a stroke (N=535, men=313; mean age ± SD, 61.91±12.42y). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Confirmatory factor analyses (CFA) and Rasch residual principal component analysis (PCA) investigated the dimensionality of the FMA-LE. The Rasch analysis rating scale model investigated item-difficulty hierarchy of the FMA-LE. RESULTS: The CFA showed adequate fit of a 3-factor model, with 2 out of 3 indices (CFA=.95; Tucker-Lewis Index=.94; root mean square error of approximation=.124) showing good model fit. Rasch PCA showed that removal of the reflex and coordination items explained 90.8% of variance in the data, suggesting that the abnormal synergy items contributed to the measurement of a unidimensional construct. However, rating scale model results revealed deviations in the item-difficulty hierarchy of the unidimensional abnormal synergy items from the originally proposed stepwise sequence of motor recovery. CONCLUSIONS: Our findings suggest that the FMA-LE might represent a multidimensional construct, challenging the use of a total score of the FMA-LE to predict lower extremity motor recovery. Removal of the misfit items resulted in creation of a unidimensional scale composed of the abnormal synergy items. However, this unidimensional scale deviates from the originally proposed hierarchical ordering.