MEDICINE AND MATHEMATICS - STATISTICS AND ETHICS IN MEDICAL-RESEARCH .3. HOW LARGE A SAMPLE
MEDICINE AND MATHEMATICS - STATISTICS AND ETHICS IN MEDICAL-RESEARCH .3. HOW LARGE A SAMPLE
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DOI：
10.1136/bmj.281.6251.1336
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发表时间：
1980-01-01
影响因子：
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通讯作者：
ALTMAN, DG
中科院分区：
文献类型：
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作者：
ALTMAN, DG
无论采用何种统计设计，都必须面对样本容量的问题。这一点给研究人员带来了相当大的困难，也许是咨询统计学家的最常见原因。然而，也有许多人很少考虑样本量，选择最方便的数字（20，50，100等）或时间段（一个月，一年等）进行研究。他们和那些批准此类研究的人应该意识到，在选择研究样本量时，有重要的统计和伦理影响。
Whatw~ r type of statistical design is used for a study, the problem of sample size must be faced. This aspect, which causes considerable difficulty for researchers, is perhaps the most common reason for consulting a statistician. There are also, however, many who give little thought to sample size, choosing the most convenient number (20, 50, 100, etc) or time period (one month, one year, etc) for their study. They, and those who approve such studies, should realise that there are important statistical and ethical implications in the choice of sample size for a study.