WHAT IS A MORTALITY RATE?
WHAT IS A MORTALITY RATE?
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什么是死亡率?
DOI:
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发表时间:
1950
期刊:
影响因子:
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通讯作者:
H. M. Luykx
中科院分区:
文献类型:
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作者:
H. M. Luykx
In medical problems, the human population is considered to be the province of the clinician. This is amply justified by the fact that, in the study of disease, the first obligation to the diseased is to make them well. Being trained to consider the requirements of the individual patient as paramount, the clinician cannot be expected to confine himself exclusively to cold scientific judgment. For this reason, he must rely heavily on the statistician or biometrician in his experimentation. Most statisticians are trained in the scientific or experimental approach. Initially, this might not have been considered to be applicable to the human population, except in certain inexact ways. With the modern development of biometry, however, unknown and ill-defined factors also have assumed their places in mathematical treatment, with the result that statistical methods can be applied more and more extensively in biological sciences, including now that essentially human science, medicine. There is evidence, however, that mathematical statisticians, in making their invaluable contributions in a field where their every effort is to be encouraged, have a tendency to overlook some of the fundamental limitations of human material. When one works with clinical subjects, there is obvious difficulty in controlling and defining experimental observations; hence, one is limited to only the most objective type of phenomena. Of these, the fact of death is in many ways the most useful, as it lends itself readily to biological definition and to description in terms of recognizable attributes such as cause of death, age a t death, and so on. Thus, there has resulted the wide usage of a factor called the mortality rate, commonly defined as the ratio of deaths to the living population. (That this definition is misleading in the first place will be touched upon presently.) The mathematician, being presented with a proportion, has easily explored the relationships of numerator and denominator in the light of the theory of errors, sampling statistics, distribution functions, etc. Insufficient attention has been paid, however, to the more fundamental attributes of a mortality rate, not the mathematical properties, but the clinical properties, as it were. Perhaps we can point out, a t this time, some questions concerning the subject which too often are not adequately understood.