Objective. To determine how reliance on Veterans Affairs (VA) for medical care among veterans enrolled in Medicare is affected by medical conditions, access, and patient characteristics. Data Sources/Study Setting. Department of Veterans Affairs. Study Design. We examined reliance on the VA for inpatient, outpatient, and overall medical care among all VA users in fiscal years 2003 and 2004 who were also enrolled in Medicare. We calculated the marginal effects of patient factors on VA reliance using fractional logistic regression; we also analyzed overall VA reliance separately for under-65 and age-651 groups. The primary focus of this analysis was the relationship between aggregated condition categories (ACCs), which represent medical conditions, and reliance on the VA. Principal Findings. Mean VA reliance was significantly higher in the under-65 population than in the age-651 group (0.800 versus 0.531). Lower differential distance to the VA, and higher VA-determined priority for health care, predicted higher VA reliance. Most individual ACCs were negatively associated with VA reliance, though substance abuse and mental health disorders were significantly associated with increased reliance on VA care. Conditions of the eyes and ears/nose/throat had positive marginal effect on VA reliance for the under 65, while diabetes was positive for age 651. Among inpatients, veterans with ACCs for mental health conditions, eye conditions, amputations, or infectious and parasitic conditions had higher likelihood of a VA hospitalization than inpatients without these conditions. Conclusions. Many dually enrolled Veterans use both Medicare and VA health care. Age, accessibility, and priority level for VA services have a clear relationship with VA reliance. Because dual use is common, coordination of care among health care settings for such patients should be a policy priority.

Poorer familiarity with Medicare may affect beneficiaries' ability to access needed care effectively, may lead them to delay or avoid seeking care, and ultimately may have negatively affect the quality of the health care that they receive and their outcomes.

OBJECTIVE We conducted a population-based study to describe the utilization, determinants, and survival effects of adjuvant therapies following surgery among older patients with pancreatic cancer. METHODS Using SEER-Medicare data, we identified patients >65 years who received surgical resection for pancreatic cancer during 1992–2002. We constructed multiple logistic regression models to examine patient, clinical, and hospital factors associated with receiving adjuvant therapy. Cox proportional hazards models were used to examine the effect of therapy on survival. RESULTS Approximately 49% of patients received adjuvant therapy following surgery. Patient factors associated with increased receipt of adjuvant therapy included more recent diagnosis, younger age, stage II disease, higher income, and geographic location. Hospital factors associated with increased receipt of adjuvant therapy included cooperative group membership and larger size. Adjuvant treatments associated with a significant reduction in 2-year mortality (relative to surgery alone) were chemoradiation or radiation alone, but not chemotherapy alone. CONCLUSIONS Our findings suggest that adjuvant chemoradiation and to a lesser degree radiation only, are associated with a reduction in the risk of mortality among older patients who undergo surgery for pancreatic cancer. However, receipt of adjuvant therapy varied by time period and geography as well as certain patient and hospital factors.