To match or not to match in epidemiological studies--same outcome but less power.

To match or not to match in epidemiological studies--same outcome but less power.
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DOI:
10.3390/ijerph7010325
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发表时间:
2010-01
影响因子:
--
通讯作者:
Faresjö A
Faresjö A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Faresjö T;Faresjö A

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本研究旨在分析IBS患者生活质量的病例对照研究中,与无疾病的对照组相比,当年龄和性别匹配程序应用于对照组时,与所有参与受试者均纳入对照组时,结果可能存在的相似性或差异。主要结果是,在流行病学病例对照研究中,无论是否匹配,都发现几乎相同和相同的结果。然而,匹配程序略微降低了结果的统计功效。
This study aimed to analyze the possible resemblance or difference in outcome in a case-control study of quality of life for IBS patients compared to controls free from the disease, when a matching procedure for age and sex was applied for the control group compared to when all participating subjects were included in the control group. The main result was that almost the same and identical results were found irrespective of whether matching or not matching was applied in this epidemiological case-control study. The matching procedure however, slightly diminished the statistical power of the results.
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