ObjectiveThe authors examined the effect of hospital and surgeon volume on perioperative mortality rates after pancreatic resection for the treatment of pancreatic cancer. Methods ResultsMore than 75% of patients underwent resection at minimal-volume (fewer than 10 cases) or low-volume (10-50 cases) centers (defined as hospitals in which a minimal number of resections were performed in a given year), and these hospitals represented 98% of the institutions treating peripancreatic cancer. The two high-volume hospitals (more than 81 cases) demonstrated a significantly lower perioperative mortality rate (4.0%) compared with the minimal-(21.8%) and low-volume (12.3%) hospitals (p < 0.001).The penoperative mortality rate was 15.5% for low-volume (fewer than 9 cases) surgeons (defined as surgeons who had performed a minimal number of resections in any hospital in a given year) (n = 687) compared with 4.7% for high-volume (more than 41 cases) pancreatic surgeons (n = 4) (p < 0.001).Logistic regression analysis demonstrated that perioperative death is significantly (p < 0.05) related to hospital volume, but the surgeon's experience is not significantly related to perioperative deaths when hospital volume is controlled. ConclusionsThese data support a defined minimum hospital experience for elective pancreatectomy for malignancy to minimize perioperative deaths. 638

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Pediatric hospice and palliative care has progressed in recent years with the development of new programs and models of care. Missing from the empirical literature, however is a model of the needs of children. The purpose of the present study was to develop an empirically based conceptual model of the needs of children with life-limiting conditions. Recognizing the value of both qualitative and quantitative data, concept mapping methodology was selected as an effective way to obtain data that reflected both the "big picture" and subtleties of pediatric end-of-life needs. The seven-cluster concept map appeared best in terms of both interpretability and parsimony. This model includes the following clusters of needs: 1) pain, 2) decision making, 3) medical system access and quality, 4) dignity and respect, 5) family-oriented care, 6) spirituality, and 7) psychosocial issues. We believe that the development of a comprehensive model of the needs of such children is a step toward concrete, measurable, and effective support for children and their families.