Biomedical subjects

W Bruce Vogel

Publications and source records attributed to W Bruce Vogel.

7 recordsLinked to original sources

PubMed2006

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.

Aged↗

PubMed2006

The effectiveness of a care coordination home telehealth program for veterans with diabetes mellitus: a 2-year follow-up.

OBJECTIVES: To assess healthcare use among veterans with diabetes mellitus (DM) enrolled in a Department of Veterans Affairs (VA) Care Coordination Home Telehealth (CCHT) program during 24 months and to contrast this utilization with the service use of a comparison group of veterans with DM not enrolled in the program. STUDY DESIGN: Two-year, retrospective, concurrent matched cohort study design. METHODS: The VA CCHT program included older veterans with type 2 DM at high risk for multiple VA inpatient and outpatient visits. Healthcare utilization (hospitalizations, length of stay, and outpatient visits by type) was assessed at baseline and at 24 months after intervention for the treatment (n = 400) and comparison (n = 400) groups. Propensity scores were used to improve the balance between the treatment and comparison groups. A difference-in-differences approach was used to control for selection bias and for intervening time factors. RESULTS: Two years after enrollment, the treatment group exhibited a statistically significant reduction in the likelihood of all-cause and DM-related hospitalizations. In a subgroup analysis in which we controlled for patients' baseline glycosylated hemoglobin levels, the treatment group had a lower likelihood of having any care coordinator-initiated primary care clinic visits (in which the care coordinator initiated referral to primary care based on health information received from patients' CCHT technology). CONCLUSION: After controlling for selection bias and for intervening time factors, the VA CCHT program reduced avoidable healthcare services for DM (such as hospitalizations) and reduced care coordinator-initiated primary care clinic visits.

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PubMed2005

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.

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PubMed2004

The sense of coherence, burden, and depressive symptoms in informal caregivers during the first month after stroke.

BACKGROUND: Individuals with a strong sense of coherence (SOC), which considers one's ability to respond to stressors by the appropriate use of adaptive coping resources, can avoid breakdown when confronted with stress. This study examined the associations between SOC, perceived burden (caregiver's perception of the effect of caregiving-related stress) and depressive symptoms of informal caregivers (family members and involved friends) of stroke survivors one-month after the stroke. METHODS: One-hundred and four ethnically diverse veterans who were hospitalized after experiencing an acute stroke and their informal caregivers were enrolled in the study prior to discharge. One-month after being discharged from one of five Veterans Affairs Medical Centers in Florida and Puerto Rico, comprehensive data was collected and analyzed. RESULTS: Multiple regression analyses showed that greater SOC was associated with both lower burden (p < 0.0001) and fewer depressive symptoms (p < 0.0001). Higher caregiver burden, in turn, was significantly associated with more depressive symptoms (p = 0.003). However, when depressive symptoms was regressed on both SOC and burden jointly, the previously significant association between burden and depressive symptoms was no longer significant (p = 0.80) and SOC was still strongly associated with fewer depressive symptoms (p < 0.0001). CONCLUSIONS: Determining factors that may lessen burden and depressive symptoms for caregivers of stroke survivors during the transition period after discharge to their residence are imperative for developing successful interventions. SOC appears to be an important response in alleviating the levels of perceived burden and especially in depressive symptoms.

Adaptation, Psychological↗

PubMedDate not supplied

Health services utilization of a care coordination/home-telehealth program for veterans with diabetes: a matched-cohort study.

This study examined the effectiveness of a veterans affairs (VA) patient-centered care coordination/home-telehealth (CC/HT) program as an adjunct to treatment for veterans with diabetes. Using an adapted version of the Chronic Care Model, we analyzed the differences in healthcare service use between a cohort of 400 veterans with diabetes who were enrolled in a VA CC/HT program and a matched comparison cohort of 400 veterans with diabetes who received no CC/HT intervention. Propensity scores were used to improve the balance between the treatment and comparison groups. Service use outcomes were assessed at 12 months before and after enrollment. A difference-in-differences approach was used in the multivariate models to assess the treatment effect for patients in the CC/HT programs. Twelve months after enrollment, there was a significant difference between the treatment and comparison groups in terms of need-based primary care visits (newly scheduled visits that enable the veteran to be seen "just in time," where the health status is monitored and met before health deteriorates), increasing in the treatment group and decreasing in the comparison group (P < .01). In a subgroup analysis, where we were able to control for the patients' Hb A1c values, we found that the treatment group had a lower likelihood of having 1 or more hospitalizations than patients in the comparison group. Our findings have implications for management in that the CC/HT program appears to improve the ability of older veterans with diabetes to receive appropriate, timely care, thereby improving the quality of care for them and making more efficient use of VA healthcare resources.

Aged↗

PubMedDate not supplied

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.

Databases, Factual↗

PubMedDate not supplied

Outcomes from stroke rehabilitation in Veterans Affairs rehabilitation units: detecting and correcting for selection bias.

This paper addresses the issue of statistical selection bias in multivariate models of functional gain estimated from observational data. Stroke patients from 20 high-volume Veterans Affairs Medical Centers (VAMCs) with acute and subacute inpatient rehabilitation treatment units were observed. Their gains in overall, motor, and cognitive functional status were measured with the use of the Functional Independence Measure (FIM). In estimating multivariate models of FIM gain during rehabilitation using these observational data, we found statistically significant evidence of selection bias, along with considerable differences in inferences between standard multivariate analyses and our selectivity-corrected models. Our results demonstrate the importance of detecting and correcting for statistical selection bias when one uses nonexperimental data to study gains in functional status.

Activities of Daily Living↗