Zaric Gregory S, Brandeau Margaret L
Ivey School of Business, University of Western Ontario, London, Canada.
Med Decis Making. 2007 Jan-Feb;27(1):71-81. doi: 10.1177/0272989X06297395.
HIV prevention funds are often allocated by decision makers at multiple levels. High-level decision makers may allocate funds to regions, and regional decision makers then allocate those funds to specific programs. Often, funds are allocated proportionally (e.g., in proportion to HIV incidence) rather than efficiently (i.e., to maximize HIV infections averted). The authors investigate the impact of efficient and proportional allocation methods at 2 different decision levels.
The authors developed an optimization model of resource allocation at 2 levels-an aggregate upper level and multiple local levels-and considered efficient allocation and allocation proportional to HIV incidence. Using data from 40 U.S. states, they compared 4 strategies for allocating HIV prevention funds.
The greatest health benefit (HIV infections averted) occurred when efficient allocations were made at both levels. When funds were allocated proportionally at the higher level and efficiently at the lower level, the health benefit was about 5% less than when efficient allocations were made at both levels. When funds were allocated efficiently at the higher level and proportionally at the lower level, the health benefit was 15% less than when efficient allocations were made at both levels. The least health benefit (23% less than when efficient allocations were made at both levels) occurred with proportional allocation at both levels.
Efficient allocation only at the higher level cannot overcome poor allocations at lower levels. Moreover, efficient allocation at the lower level is likely to yield greater gains than efficient allocation at the higher level. Thus, upper-level decision makers, such as donor organizations, should develop incentives to promote efficient allocation by lower-level decision makers.
艾滋病病毒(HIV)预防资金通常由多个层面的决策者进行分配。高层决策者可能会将资金分配到各个地区,然后地区决策者再将这些资金分配到具体项目。通常情况下,资金是按比例分配(例如,与HIV发病率成比例),而非高效分配(即,使避免的HIV感染人数最大化)。作者研究了在两个不同决策层面采用高效和按比例分配方法的影响。
作者开发了一个两级资源分配优化模型——一个总体的上层和多个局部层面——并考虑了高效分配以及与HIV发病率成比例的分配。利用来自美国40个州的数据,他们比较了4种分配HIV预防资金的策略。
当两个层面都进行高效分配时,健康效益(避免的HIV感染)最大。当资金在较高层面按比例分配而在较低层面高效分配时,健康效益比两个层面都进行高效分配时约低5%。当资金在较高层面高效分配而在较低层面按比例分配时,健康效益比两个层面都进行高效分配时低15%。两个层面都按比例分配时健康效益最小(比两个层面都进行高效分配时低23%)。
仅在较高层面进行高效分配无法克服较低层面的不合理分配。此外,在较低层面进行高效分配可能比在较高层面进行高效分配产生更大的收益。因此,诸如捐助组织等上层决策者应制定激励措施,以促进下层决策者进行高效分配。