| Review on Problems with Null Hypothesis Significance Testing in Dental Research and Its Alternatives |
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Kwang-Hee Lee |
| Department of Pediatric Dentistry, College of Dentistry, Wonkwang University |
| 치의학 연구에서 귀무가설 유의성 검정의 문제점과 대안에 관한 고찰 |
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이광희 |
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원광대학교 치과대학 소아치과학교실 |
Correspondence:
Kwang-Hee Lee, Tel: +82-63-850-2955, Fax: +82-63-851-5324, Email: kwhlee@wonkwang.ac.kr
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Received: 10 July 2013 • Accepted: 24 July 2013 |
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| Abstract |
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There are many problems in evaluating study results by p value in null hypothesis testing for dental research. It is a logical fallacy to conclude that the null hypothesis is true when the it is not rejected. There are much serious misunderstanding about p value, and researchers should be cautious about interpreting p value in writing papers. As alternatives to complement or replace the null hypothesis significance testing, effect size, confidence interval, and Bayesian statistics are introduced. |
| Key Words:
Null hypothesis, Significance testing, p value, Effect size, Confidence interval, Bayesian statistics |
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