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Effect heterogeneity and variable selection for standardizing causal effects to a target population.

Huitfeldt A, Swanson SA, Stensrud MJ, Suzuki E. Huitfeldt A, et al. Eur J Epidemiol. 2019 Dec;34(12):1119-1129. doi: 10.1007/s10654-019-00571-w. Epub 2019 Oct 26. Eur J Epidemiol. 2019. PMID: 31655945

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On the collapsibility of measures of effect in the counterfactual causal framework.

Huitfeldt A, Stensrud MJ, Suzuki E. Huitfeldt A, et al. Emerg Themes Epidemiol. 2019 Jan 7;16:1. doi: 10.1186/s12982-018-0083-9. eCollection 2019. Emerg Themes Epidemiol. 2019. PMID: 30627207 Free PMC article.

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Re: Generalizing Study Results: A Potential Outcomes Perspective.

Huitfeldt A, Stensrud MJ. Huitfeldt A, et al. Epidemiology. 2018 Mar;29(2):e13-e14. doi: 10.1097/EDE.0000000000000769. Epidemiology. 2018. PMID: 29023239 No abstract available.

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Associations of Maternal Use of Benzodiazepines or Benzodiazepine-like Hypnotics During Pregnancy With Immediate Pregnancy Outcomes in Norway.

Huitfeldt A, Sundbakk LM, Skurtveit S, Handal M, Nordeng H. Huitfeldt A, et al. JAMA Netw Open. 2020 Jun 1;3(6):e205860. doi: 10.1001/jamanetworkopen.2020.5860. JAMA Netw Open. 2020. PMID: 32568398 Free PMC article.

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Odds ratios are not conditional risk ratios.

Huitfeldt A. Huitfeldt A. J Clin Epidemiol. 2017 Apr;84:191. doi: 10.1016/j.jclinepi.2016.12.013. Epub 2017 Feb 2. J Clin Epidemiol. 2017. PMID: 28161452 No abstract available.

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Is caviar a risk factor for being a millionaire?

Huitfeldt A. Huitfeldt A. BMJ. 2016 Dec 9;355:i6536. doi: 10.1136/bmj.i6536. BMJ. 2016. PMID: 27940434 No abstract available.

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Incentives and participation in a medical survey.

Gjøstein DK, Huitfeldt A, Løberg M, Adami HO, Garborg K, Kalager M, Bretthauer M. Gjøstein DK, et al. Among authors: huitfeldt a. Tidsskr Nor Laegeforen. 2016 Jul 5;136(12-13):1082-7. doi: 10.4045/tidsskr.15.1096. eCollection 2016 Jul. Tidsskr Nor Laegeforen. 2016. PMID: 27381786 Free article. Clinical Trial. English, Norwegian.

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The choice of effect measure for binary outcomes: Introducing counterfactual outcome state transition parameters.

Huitfeldt A, Goldstein A, Swanson SA. Huitfeldt A, et al. Epidemiol Methods. 2018 Dec;7(1):20160014. doi: 10.1515/em-2016-0014. Epub 2018 Jul 27. Epidemiol Methods. 2018. PMID: 30637184 Free PMC article.

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Methods to Estimate the Comparative Effectiveness of Clinical Strategies that Administer the Same Intervention at Different Times.

Huitfeldt A, Kalager M, Robins JM, Hoff G, Hernán MA. Huitfeldt A, et al. Curr Epidemiol Rep. 2015 Sep 1;2(3):149-161. doi: 10.1007/s40471-015-0045-5. Epub 2015 Jul 24. Curr Epidemiol Rep. 2015. PMID: 26587368 Free PMC article.

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Comparative Effectiveness Research Using Observational Data: Active Comparators to Emulate Target Trials with Inactive Comparators.

Huitfeldt A, Hernan MA, Kalager M, Robins JM. Huitfeldt A, et al. EGEMS (Wash DC). 2016 Oct 14;4(1):1234. doi: 10.13063/2327-9214.1234. eCollection 2016. EGEMS (Wash DC). 2016. PMID: 27891526 Free PMC article.

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