Rothberg J M, Holloway H C, Nace E P
Int J Addict. 1976;11(5):819-30. doi: 10.3109/10826087609058814.
This application of stepwise discriminant analysis explores a way to structure skewed-sample interview data, discusses some implications of the results and the conceptual limitations of assumptions about deviancy, and suggests a focus for future studies of the complex phenomena of drug abuse. The methodology differs from previous reports in that it uses a constant probability level, letting the computational procedure determine the number of significant variables. It also provides a method of determining the "chance" level (the amount of correct classification when there are no differences between the groups) so that the observed correct classification values may be usefully interpreted.
这种逐步判别分析的应用探索了一种构建偏态样本访谈数据的方法，讨论了结果的一些影响以及关于偏差假设的概念局限性，并为未来药物滥用复杂现象的研究提出了一个重点。该方法与之前的报告不同，它使用恒定的概率水平，让计算程序确定显著变量的数量。它还提供了一种确定“机会”水平（即组间无差异时正确分类的数量）的方法，以便能有效地解释观察到的正确分类值。
