Kötzschke H
Stomatol DDR. 1978 Nov;28(11):829-33.
Periodontal disease indices are a must in epidemiologic studies, analytical epidemiology making special demands. The indices hitherto commonly used do not meet all demands; consequently, they can be applied only in certain studies, especially in the sense of descriptive epidemiology. For 15 years, the periodontal disease index according to Kötzschke has proved to be useful for large-scale correlation calculations, being well suited for making evident the effects of the most different factors. At the beginning of any experiment and investigation, exact considerations must be given to the aim and special objectives of an index.
牙周疾病指数在流行病学研究中是必不可少的，分析流行病学对此有特殊要求。迄今常用的指数并不能满足所有要求；因此，它们只能应用于某些研究，特别是在描述性流行病学方面。十五年来，科茨施克的牙周疾病指数已被证明对大规模相关性计算很有用，非常适合于揭示最不同因素的影响。在任何实验和调查开始时，必须对指数的目的和特殊目标进行精确考量。
