Exploring interaction effects in small samples increases rates of false-positive and false-negative findings: results from a systematic review and simulation study

Abstract Objective To give a comprehensive comparison of the performance of commonly applied interaction tests. Methods A literature review and simulation study was performed evaluating interaction tests on the odds ratio (OR) or the risk difference (RD) scales: Cochran Q (Q), Breslow–Day (BD), Taro...

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Veröffentlicht in:Journal of clinical epidemiology 2014-07, Vol.67 (7), p.821-829
Hauptverfasser: Schmidt, Amand F, Groenwold, Rolf H.H, Knol, Mirjam J, Hoes, Arno W, Nielen, Mirjam, Roes, Kit C.B, de Boer, Anthonius, Klungel, Olaf H
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container_end_page 829
container_issue 7
container_start_page 821
container_title Journal of clinical epidemiology
container_volume 67
creator Schmidt, Amand F
Groenwold, Rolf H.H
Knol, Mirjam J
Hoes, Arno W
Nielen, Mirjam
Roes, Kit C.B
de Boer, Anthonius
Klungel, Olaf H
description Abstract Objective To give a comprehensive comparison of the performance of commonly applied interaction tests. Methods A literature review and simulation study was performed evaluating interaction tests on the odds ratio (OR) or the risk difference (RD) scales: Cochran Q (Q), Breslow–Day (BD), Tarone, unconditional score, likelihood ratio (LR), Wald, and relative excess risk due to interaction (RERI)-based tests. Results Review results agreed with results from our simulation study, which showed that on the OR scale, in small sample sizes (eg, number of subjects ≤ 250) the type 1 error rates of the LR test was 0.10; the BD and Tarone tests showed results around 0.05. On the RD scale, the LR and RERI tests had error rates around 0.05. On both scales, tests did not differ regarding power. When exposure prevented the outcome RERI-based tests were relatively underpowered (eg, N  = 100; RERI power = 5% vs. Wald power = 18%). With increasing sample size, difference decreased. Conclusion In small samples, interaction tests differed. On the OR scale, the Tarone and BD tests are recommended. On the RD scale, the LR and RERI-based tests performed best. However, RERI-based tests are underpowered compared with other tests, when exposure prevents the outcome, and sample size is limited.
doi_str_mv 10.1016/j.jclinepi.2014.02.008
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Methods A literature review and simulation study was performed evaluating interaction tests on the odds ratio (OR) or the risk difference (RD) scales: Cochran Q (Q), Breslow–Day (BD), Tarone, unconditional score, likelihood ratio (LR), Wald, and relative excess risk due to interaction (RERI)-based tests. Results Review results agreed with results from our simulation study, which showed that on the OR scale, in small sample sizes (eg, number of subjects ≤ 250) the type 1 error rates of the LR test was 0.10; the BD and Tarone tests showed results around 0.05. On the RD scale, the LR and RERI tests had error rates around 0.05. On both scales, tests did not differ regarding power. When exposure prevented the outcome RERI-based tests were relatively underpowered (eg, N  = 100; RERI power = 5% vs. Wald power = 18%). With increasing sample size, difference decreased. Conclusion In small samples, interaction tests differed. On the OR scale, the Tarone and BD tests are recommended. On the RD scale, the LR and RERI-based tests performed best. However, RERI-based tests are underpowered compared with other tests, when exposure prevents the outcome, and sample size is limited.</description><identifier>ISSN: 0895-4356</identifier><identifier>EISSN: 1878-5921</identifier><identifier>DOI: 10.1016/j.jclinepi.2014.02.008</identifier><identifier>PMID: 24768005</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Analysis. Health state ; Biological and medical sciences ; Computer Simulation ; Diagnostic Errors ; Effect modification ; Epidemiologic Methods ; Epidemiology ; False Negative Reactions ; False Positive Reactions ; General aspects ; Heart attacks ; Humans ; Interaction ; Internal Medicine ; Literature reviews ; Medical research ; Medical sciences ; Odds Ratio ; Public health. Hygiene ; Public health. Hygiene-occupational medicine ; Relative excess risk due to interaction ; Review ; Risk ; Risk ratio ; Sample Size ; Simulation ; Statistics ; Statistics as Topic ; Subgroups</subject><ispartof>Journal of clinical epidemiology, 2014-07, Vol.67 (7), p.821-829</ispartof><rights>Elsevier Inc.</rights><rights>2014 Elsevier Inc.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2014 Elsevier Inc. 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Methods A literature review and simulation study was performed evaluating interaction tests on the odds ratio (OR) or the risk difference (RD) scales: Cochran Q (Q), Breslow–Day (BD), Tarone, unconditional score, likelihood ratio (LR), Wald, and relative excess risk due to interaction (RERI)-based tests. Results Review results agreed with results from our simulation study, which showed that on the OR scale, in small sample sizes (eg, number of subjects ≤ 250) the type 1 error rates of the LR test was 0.10; the BD and Tarone tests showed results around 0.05. On the RD scale, the LR and RERI tests had error rates around 0.05. On both scales, tests did not differ regarding power. When exposure prevented the outcome RERI-based tests were relatively underpowered (eg, N  = 100; RERI power = 5% vs. Wald power = 18%). With increasing sample size, difference decreased. Conclusion In small samples, interaction tests differed. On the OR scale, the Tarone and BD tests are recommended. On the RD scale, the LR and RERI-based tests performed best. However, RERI-based tests are underpowered compared with other tests, when exposure prevents the outcome, and sample size is limited.</description><subject>Analysis. Health state</subject><subject>Biological and medical sciences</subject><subject>Computer Simulation</subject><subject>Diagnostic Errors</subject><subject>Effect modification</subject><subject>Epidemiologic Methods</subject><subject>Epidemiology</subject><subject>False Negative Reactions</subject><subject>False Positive Reactions</subject><subject>General aspects</subject><subject>Heart attacks</subject><subject>Humans</subject><subject>Interaction</subject><subject>Internal Medicine</subject><subject>Literature reviews</subject><subject>Medical research</subject><subject>Medical sciences</subject><subject>Odds Ratio</subject><subject>Public health. Hygiene</subject><subject>Public health. 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Methods A literature review and simulation study was performed evaluating interaction tests on the odds ratio (OR) or the risk difference (RD) scales: Cochran Q (Q), Breslow–Day (BD), Tarone, unconditional score, likelihood ratio (LR), Wald, and relative excess risk due to interaction (RERI)-based tests. Results Review results agreed with results from our simulation study, which showed that on the OR scale, in small sample sizes (eg, number of subjects ≤ 250) the type 1 error rates of the LR test was 0.10; the BD and Tarone tests showed results around 0.05. On the RD scale, the LR and RERI tests had error rates around 0.05. On both scales, tests did not differ regarding power. When exposure prevented the outcome RERI-based tests were relatively underpowered (eg, N  = 100; RERI power = 5% vs. Wald power = 18%). With increasing sample size, difference decreased. Conclusion In small samples, interaction tests differed. On the OR scale, the Tarone and BD tests are recommended. On the RD scale, the LR and RERI-based tests performed best. However, RERI-based tests are underpowered compared with other tests, when exposure prevents the outcome, and sample size is limited.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>24768005</pmid><doi>10.1016/j.jclinepi.2014.02.008</doi><tpages>9</tpages></addata></record>
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subjects Analysis. Health state
Biological and medical sciences
Computer Simulation
Diagnostic Errors
Effect modification
Epidemiologic Methods
Epidemiology
False Negative Reactions
False Positive Reactions
General aspects
Heart attacks
Humans
Interaction
Internal Medicine
Literature reviews
Medical research
Medical sciences
Odds Ratio
Public health. Hygiene
Public health. Hygiene-occupational medicine
Relative excess risk due to interaction
Review
Risk
Risk ratio
Sample Size
Simulation
Statistics
Statistics as Topic
Subgroups
title Exploring interaction effects in small samples increases rates of false-positive and false-negative findings: results from a systematic review and simulation study
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