Huanguang Jia

Ethnic Disparities in Stroke Epidemiology, Acute Care, and Postacute Outcomes

Background and Purpose— Evidence for ethnic disparities in stroke incidence, severity, and mortality has continued to mount in recent years. However, the picture for disparities in acute management and rehabilitation remains more ambiguous. The objective of this report is to summarize current evidence from stroke epidemiology and studies focusing on disparities in stroke care and disability, suggesting courses for action. Methods— A comprehensive search of current literature on ethnic/racial variation in stroke incidence, mortality, and severity, as well as acute and postacute patient care was performed. Results— Recent evidence unambiguously reaffirms a greater burden of disease in stroke, greater mortality, and greater severity of strokes for blacks. Evidence for disparities in acute and postacute care is less conclusive, as is the evidence for disparities among other ethnic groups. Evidence for health disparities in stroke care across settings, regions, and the continuum of care varies considerably. Conclusions— Minority ethnic groups have higher rates or more severe stroke, but variations in prognosis for clinical outcomes other than mortality remain less certain. There is considerable need for more studies that take into account regional ethnic variations in treatment and outcomes, and for better documentation of stroke outcomes among groups in addition to blacks. Dealing with ethnic disparities in stroke will be served by sustained attention to quality improvement in high-impact areas in stroke care, complemented by initiatives that promote cultural competence.

The Impact of Poststroke Depression on Healthcare Use by Veterans With Acute Stroke

Background and Purpose— Poststroke depression (PSD) is common among stroke survivors, and it is associated with worse functional outcomes and increased poststroke mortality. Limited information is available about its impact on healthcare use. This study assessed the impact of PSD on healthcare use by veterans with acute stroke. Methods— In this retrospective, observational national study, 5825 veterans with acute stroke were identified from Veterans Affairs’ (VA) inpatient databases. To determine the patients’ comprehensive PSD and use status, VA and Medicare fee-for-service inpatient and outpatient as well as VA pharmacy data were used. PSD was established if a patient had an inpatient or outpatient depression diagnosis or if a patient received one of the antidepressants within the VA 12 months postindex stroke. Healthcare use referred to the number of hospital stays, outpatient visits, and cumulative length of inpatient stays under both VA and Medicare fee-for-service programs. Poisson regression was fitted to estimate the impact of PSD on use controlling for sociodemographic, clinical, and disease severity factors. Results— Forty-one percent of the sample had PSD. After adjusting for patient demographic and clinical factors, we found that the patients with stroke with PSD had significantly (P<0.0001) more hospitalizations, outpatient visits, and longer length of stays 12 months poststroke compared with these patients with stroke without PSD. Conclusions— Patients with PSD had greater 12-month poststroke healthcare use even when controlling for other demographic and clinical variables. Early detection and appropriate management of PSD for veterans with acute stroke may help reduce their poststroke healthcare use.

Multiple System Utilization and Mortality for Veterans With Stroke

Background and Purpose— Many Veteran Health Administration (VHA) enrollees receive health services outside the VHA system. However, limited information is available about poststroke utilization and mortality by veterans who used multiple sources of health care. This study assessed the likelihood of 12-month poststroke rehospitalization and mortality of veterans who used VHA only versus those who used multiple sources of care. Methods— Our retrospective observational study examined veterans living in Florida and diagnosed with acute stroke. We categorized users into 4 groups: VHA-only, VHA-Medicare, VHA-Medicaid, and VHA-Medicare-Medicaid based on their use of each health care program. Logistic regression models were fitted for 12-month poststroke general rehospitalization, recurrent stroke readmission, and mortality, adjusting for sociodemographic and clinical factors. Results— The sample consisted of 29% VHA-only users, 61% VHA-Medicare users, 3% VHA-Medicaid users, and 7% VHA-Medicare-Medicaid triple users. Compared with the VHA-only users, multiple system users were significantly more likely to be rehospitalized for any cause and for recurrent stroke 12-months postindex. Mortality outcomes depended on when the outcome was measured; at the index admission date, we found no significant difference in mortality across the user groups; at the index discharge date, the VHA-only users was less likely to die within the first 12 months than the users of the 2 dual groups (VHA-Medicare and VHA-Medicaid). Conclusions— Multiple health care source use was common among VHA enrollees with acute stroke in Florida. Multiple system users were more likely to be rehospitalized and the mortality outcomes were dependent on when the outcome was measured.

Long-term effect of home telehealth services on preventable hospitalization use

In this study, we assessed the longitudinal effect of a Department of Veterans Affairs (VA) patient-centered Care Coordination Home Telehealth (CCHT) program on preventable hospitalization use by veterans with diabetes mellitus (DM) at four VA medical centers. We used a matched treatment-control design (n = 387 for both groups). All patients were followed for 4 years. We operationalized ambulatory care-sensitive conditions (ACSCs) by applying Agency for Healthcare Research and Quality criteria to VA inpatient databases to determine preventable hospitalization use. We used a generalized linear mixed model to estimate the adjusted effect of the CCHT program on preventable hospitalization use over time. During the initial 18 months of follow-up, CCHT enrollees were less likely to be admitted for a preventable hospitalization than their nonenrollee counterparts, and this difference diminished during the rest of the 4-year follow-up period. The VA CCHT program for DM patients reduced preventable hospitalizations. These findings are some of the first that have systematically examined the extent to which home telehealth programs have a long-term effect on preventable hospitalization use.

Mortality risk for diabetes patients in a care coordination, home-telehealth programme.

We assessed a home monitoring/care coordination programme for veterans with diabetes. Patients enrolled in the programme (n = 387) were followed for four years and compared with a retrospective control group (n = 387). Each patient in the intervention group used a messaging device in the home that was connected by a conventional telephone line. Care coordinators monitored the answers from the devices daily so that early interventions could be made. There were significantly more deaths in the control group (n = 102, 26%) compared with the intervention group (n = 75, 19%). There was longer survival for the intervention group versus the control group (mean survival time 1348 vs 1278 days; P = 0.015). A multivariate analyses indicated that the telemonitoring programme was associated with reduced 4-year all-cause mortality (hazard ratio = 0.7, 95% CI 0.5–0.9, P = 0.013). The results suggest that daily management of patients with diabetes through home monitoring by a registered nurse reduces mortality.

Racial and ethnic disparities in post-stroke depression detection

Post‐stroke depression (PSD) is common among stroke survivors and is associated with increased morbidity and mortality. Little is understood about racial/ethnic differences in PSD detection. This study assessed the racial/ethnic disparities in PSD detection in a national cohort of Department of Veterans Affairs (VA) acute stroke patients.

Race/ethnicity: who is counting what?

Misclassification of race and ethnicity in administrative data may produce misleading results if it is overlooked or ignored. In this study, we examined the racial/ethnic classifications of 1,084 veterans with stroke in Florida who received inpatient and outpatient services within the Department of Veterans Affairs (VA) healthcare system and who were also eligible for Medicare between 2000 and 2001. We compared the reliability of racial/ethnic classifications between VA inpatient data, VA outpatient data, and Medicare data. Our results showed that (1) the rate of unknown racial/ethnic classification in VA outpatient and inpatient data was high, (2) minimizing the unknowns by substituting known values from other data when available would greatly enhance the overall and individual classification reliability, (3) black and white classifications in the VA data had stronger agreement with Medicare data, and (4) Medicare data may under-represent Hispanic patients.

Rural‐Urban Differences in Inpatient Quality of Care in US Veterans With Ischemic Stroke

PURPOSE Differences in stroke care quality for patients in rural and urban locations have been suggested, but whether differences exist across Veteran Administration Medical Centers (VAMCs) is unknown. This study examines whether rural-urban disparities exist in inpatient quality among veterans with acute ischemic stroke. METHODS In this retrospective study, inpatient stroke care quality was assessed in a national sample of veterans with acute ischemic stroke using 14 quality indicators (QIs). Rural-Urban Commuting Areas codes defined each VAMCs rural-urban status. A hierarchical linear model assessed the rural-urban differences across the 14 QIs, adjusting for patient and facility characteristics, and clustering within VAMCs. FINDINGS Among 128 VAMCs, 18 (14.1%) were classified as rural VAMCs and admitted 284 (7.3%) of the 3,889 ischemic stroke patients. Rural VAMCs had statistically significantly lower unadjusted rates on 6 QIs: Deep vein thrombosis (DVT) prophylaxis, antithrombotic at discharge, antithrombotic at day 2, lipid management, smoking cessation counseling, and National Institutes of Health Stroke Scale completion, but they had higher rates of stroke education, functional assessment, and fall risk assessment. After adjustment, differences in 2 QIs remained significant-patients treated in rural VAMCs were less likely to receive DVT prophylaxis, but more likely to have documented functional assessment. CONCLUSIONS After adjustment for key demographic, clinical, and facility-level characteristics, there does not appear to be a systematic difference in inpatient stroke quality between rural and urban VAMCs. Future research should seek to understand the few differences in care found that could serve as targets for future quality improvement interventions.

A longitudinal study of health service utilization for diabetes patients in a care coordination home-telehealth programme.

We assessed the effects of a care coordination home-telehealth (CCHT) programme on health service utilization. The subjects (n = 387 for each group) were US veterans diagnosed with diabetes and followed for 48 months. The service utilization measures were numbers of all-cause inpatient stays and outpatient visits during the follow-up period. We used generalized linear mixed models to estimate the adjusted effects of the CCHT programme on service use over time. Compared with the controls, the CCHT clients were less likely to be admitted for inpatient care during the first (P < 0.001) and second (P < 0.01) six-month follow-up period, and were consistently more likely to visit outpatient clinics (P < 0.001) during the whole 48-month follow-up period. The likelihood of increase in outpatient utilization tended to decline over time. The findings suggest that the CCHT programme helped to reduce overall inpatient and outpatient use by the clients over the 48-month follow-up period.

Does Inpatient Quality of Care Differ by Age Among US Veterans with Ischemic Stroke

BACKGROUND Some studies have found that older individuals are not as likely as their younger counterparts to be treated with some guideline-based stroke therapies. We examined whether age-related differences in inpatient quality of care exist among US veterans with ischemic stroke. METHODS This was a retrospective study of a national sample of veterans admitted to 129 Veterans Affairs medical centers for ischemic stroke during fiscal year 2007. Inpatient stroke care quality was examined across 14 inpatient processes of care, including dysphagia screening, National Institutes of Health Stroke Scale (NIHSS) score documentation, thrombolysis, deep venous thrombosis prophylaxis, antithrombotic therapy by hospital day 2 and at discharge, early ambulation, fall risk assessment, pressure ulcer risk assessment, rehabilitation needs assessment, atrial fibrillation management, lipid management, smoking cessation counseling, and stroke education. RESULTS Among the 3939 veterans with ischemic stroke, the mean age was 67.8 years (standard deviation, 11.5). The overall performance rate was >70% for 10 of the 14 quality indicators. In unadjusted analyses, older patients were less likely to receive lipid management, smoking cessation, NIHSS documentation, and early ambulation compared with younger patients; conversely, older patients were more likely to receive dysphagia screening and stroke education. After adjusting for demographic, clinical, and hospital level characteristics, the age-related differences in processes of care were less consistent; however, the youngest patients were more likely to receive smoking cessation counseling and the oldest patients were less likely to receive lipid management. CONCLUSIONS Risk-adjusted inpatient stroke care quality varies little with age for veterans admitted to a Veterans Affairs medical center for acute ischemic stroke.