Learning Causal Effects From Observational Data in Healthcare: A Review and Summary

Causal inference is a broad field that seeks to build and apply models that learn the effect of interventions on outcomes using many data types. While the field has existed for decades, its potential to impact healthcare outcomes has increased dramatically recently due to both advancements in machin...

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Main Authors: Jingpu Shi, Beau Norgeot
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-07-01
Series:Frontiers in Medicine
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmed.2022.864882/full
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author Jingpu Shi
Beau Norgeot
author_facet Jingpu Shi
Beau Norgeot
author_sort Jingpu Shi
collection DOAJ
description Causal inference is a broad field that seeks to build and apply models that learn the effect of interventions on outcomes using many data types. While the field has existed for decades, its potential to impact healthcare outcomes has increased dramatically recently due to both advancements in machine learning and the unprecedented amounts of observational data resulting from electronic capture of patient claims data by medical insurance companies and widespread adoption of electronic health records (EHR) worldwide. However, there are many different schools of learning causality coming from different fields of statistics, some of them strongly conflicting. While the recent advances in machine learning greatly enhanced causal inference from a modeling perspective, it further exacerbated the fractured state in this field. This fractured state has limited research at the intersection of causal inference, modern machine learning, and EHRs that could potentially transform healthcare. In this paper we unify the classical causal inference approaches with new machine learning developments into a straightforward framework based on whether the researcher is most interested in finding the best intervention for an individual, a group of similar people, or an entire population. Through this lens, we then provide a timely review of the applications of causal inference in healthcare from the literature. As expected, we found that applications of causal inference in medicine were mostly limited to just a few technique types and lag behind other domains. In light of this gap, we offer a helpful schematic to guide data scientists and healthcare stakeholders in selecting appropriate causal methods and reviewing the findings generated by them.
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spelling doaj.art-fd42a859278247e7ba9f62adf9766d7a2022-12-22T00:59:48ZengFrontiers Media S.A.Frontiers in Medicine2296-858X2022-07-01910.3389/fmed.2022.864882864882Learning Causal Effects From Observational Data in Healthcare: A Review and SummaryJingpu ShiBeau NorgeotCausal inference is a broad field that seeks to build and apply models that learn the effect of interventions on outcomes using many data types. While the field has existed for decades, its potential to impact healthcare outcomes has increased dramatically recently due to both advancements in machine learning and the unprecedented amounts of observational data resulting from electronic capture of patient claims data by medical insurance companies and widespread adoption of electronic health records (EHR) worldwide. However, there are many different schools of learning causality coming from different fields of statistics, some of them strongly conflicting. While the recent advances in machine learning greatly enhanced causal inference from a modeling perspective, it further exacerbated the fractured state in this field. This fractured state has limited research at the intersection of causal inference, modern machine learning, and EHRs that could potentially transform healthcare. In this paper we unify the classical causal inference approaches with new machine learning developments into a straightforward framework based on whether the researcher is most interested in finding the best intervention for an individual, a group of similar people, or an entire population. Through this lens, we then provide a timely review of the applications of causal inference in healthcare from the literature. As expected, we found that applications of causal inference in medicine were mostly limited to just a few technique types and lag behind other domains. In light of this gap, we offer a helpful schematic to guide data scientists and healthcare stakeholders in selecting appropriate causal methods and reviewing the findings generated by them.https://www.frontiersin.org/articles/10.3389/fmed.2022.864882/fullelectronic health recordcausal inferencemachine learninghealthcaretreatment effectsreview
spellingShingle Jingpu Shi
Beau Norgeot
Learning Causal Effects From Observational Data in Healthcare: A Review and Summary
Frontiers in Medicine
electronic health record
causal inference
machine learning
healthcare
treatment effects
review
title Learning Causal Effects From Observational Data in Healthcare: A Review and Summary
title_full Learning Causal Effects From Observational Data in Healthcare: A Review and Summary
title_fullStr Learning Causal Effects From Observational Data in Healthcare: A Review and Summary
title_full_unstemmed Learning Causal Effects From Observational Data in Healthcare: A Review and Summary
title_short Learning Causal Effects From Observational Data in Healthcare: A Review and Summary
title_sort learning causal effects from observational data in healthcare a review and summary
topic electronic health record
causal inference
machine learning
healthcare
treatment effects
review
url https://www.frontiersin.org/articles/10.3389/fmed.2022.864882/full
work_keys_str_mv AT jingpushi learningcausaleffectsfromobservationaldatainhealthcareareviewandsummary
AT beaunorgeot learningcausaleffectsfromobservationaldatainhealthcareareviewandsummary