Standardization as a Tool for Causal Inference in Medical Research

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Gharibzadeh Safoora; MOHAMMAD KAZEM; RAHIMIFOROUSHANI ABBAS; AMOUZEGAR ATIEH; MANSOURNIA MOHAMMAD ALI

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Journal: ARCHIVES OF IRANIAN MEDICINE Year:2016 | Volume:19 | Issue:9 Page(s): 666-670

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Title

Standardization as a Tool for Causal Inference in Medical Research

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Keywords

marginal effect

model-based Standardization

parametric g-formula

propensity scores

Abstract

Traditional standardization methods have been used in medical research for a long time to standardize the effect of interest for one confounder such as age. model-based Standardization extension of these methods is used when we have more than one variable produces an effect which is the population average and has marginal causal interpretation. In this paper, we discuss the most traditional model-based Standardization methods that are used to estimate the marginal causal effect of exposure. We applied these methods to data from Tehran Thyroid Study and estimated the standardized effect of exposure on outcome. Based on the simulation studies, covariate standardization is preferred except when 1) we have enough information about the mechanism of exposure or 2) the outcome is rare and exposure is frequent, so propensity score standardization is suggested.

Cites

Research Methods: Risk Ratio Estimation in Longitudinal Studies

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APA: Copy

Gharibzadeh, Safoora, MOHAMMAD, KAZEM, RAHIMIFOROUSHANI, ABBAS, AMOUZEGAR, ATIEH, & MANSOURNIA, MOHAMMAD ALI. (2016). Standardization as a Tool for Causal Inference in Medical Research. ARCHIVES OF IRANIAN MEDICINE, 19(9), 666-670. SID. https://sid.ir/paper/281710/en

Vancouver: Copy

Gharibzadeh Safoora, MOHAMMAD KAZEM, RAHIMIFOROUSHANI ABBAS, AMOUZEGAR ATIEH, MANSOURNIA MOHAMMAD ALI. Standardization as a Tool for Causal Inference in Medical Research. ARCHIVES OF IRANIAN MEDICINE[Internet]. 2016;19(9):666-670. Available from: https://sid.ir/paper/281710/en

IEEE: Copy

Safoora Gharibzadeh, KAZEM MOHAMMAD, ABBAS RAHIMIFOROUSHANI, ATIEH AMOUZEGAR, and MOHAMMAD ALI MANSOURNIA, “Standardization as a Tool for Causal Inference in Medical Research,” ARCHIVES OF IRANIAN MEDICINE, vol. 19, no. 9, pp. 666–670, 2016, [Online]. Available: https://sid.ir/paper/281710/en

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