Iversen E
Bull World Health Organ. 1967;36(5):733-46.
The experience of a group of patients, observed in a follow-up study, may conveniently be described by means of decrement tables, of which the survival table is the best known. Just as this table shows how a population group has decreased gradually because of death, so other decrement tables may depict the cumulative effect of cure, or of death and cure combined.Decrement tables can be established not only when all patients under study have been observed from the onset of their disease until cure or death, but also when patients with varying durations of disease have been followed for only a few years; in this case the statistical technique used for the construction of life-tables must be applied.This paper demonstrates in detail the tabulations and calculations involved in this technique, using nationwide data from the Danish Tuberculosis Register as the basis, and applying the technique to aspects of the prognosis for tuberculosis patients that have hitherto been difficult to quantify.
在一项随访研究中观察到的一组患者的经历，可以通过递减表方便地进行描述，其中生存表最为人所知。正如该表显示了一个人群组如何因死亡而逐渐减少一样，其他递减表可以描述治愈的累积效应，或死亡与治愈相结合的累积效应。不仅可以在对所有研究患者从疾病发作起一直观察到治愈或死亡时建立递减表，而且当对患有不同病程疾病的患者仅随访了几年时也可以建立递减表；在这种情况下，必须应用用于构建生命表的统计技术。本文以丹麦结核病登记处的全国数据为基础，详细演示了该技术所涉及的列表和计算，并将该技术应用于迄今难以量化的结核病患者预后方面。
