Ravn I
Department of Social Systems Sciences, Wharton School, University of Pennsylvania, Philadelphia 19104.
Int J Addict. 1987 Sep;22(9):813-23. doi: 10.3109/10826088709027461.
The single-distribution theory of alcohol consumption and the derived prevention strategy, the control-of-consumption approach, are conceptualized as three probabilistic relationships between four variables, collectively called "the Ledermann string": availability, average consumption, proportion of heavy drinkers, and prevalence of damage. This conceptualization suggests four different intervention strategies, only one of which is seriously considered by advocates of the single-distribution theory: restrictions on availability. A companion article reviews the scientific literature on the relationships of the Ledermann string.
酒精消费的单分布理论以及由此衍生的预防策略，即消费控制方法，被概念化为四个变量之间的三种概率关系，这四个变量统称为“莱德曼链”：可得性、平均消费量、重度饮酒者比例和损害发生率。这种概念化提出了四种不同的干预策略，而单分布理论的支持者只认真考虑了其中一种：限制可得性。一篇配套文章回顾了关于莱德曼链关系的科学文献。
