Predicting alcohol dependence from multi-site brain structural measures
Publication year
2022Author(s)
Number of pages
11 p.
Source
Human Brain Mapping, 43, 1, (2022), pp. 555-565ISSN
Publication type
Article / Letter to editor

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Organization
SW OZ BSI OGG
PI Group Motivational & Cognitive Control
Journal title
Human Brain Mapping
Volume
vol. 43
Issue
iss. 1
Languages used
English (eng)
Page start
p. 555
Page end
p. 565
Subject
170 000 Motivational & Cognitive Control; Developmental PsychopathologyAbstract
To identify neuroimaging biomarkers of alcohol dependence (AD) from structural magnetic resonance imaging, it may be useful to develop classification models that are explicitly generalizable to unseen sites and populations. This problem was explored in a mega‐analysis of previously published datasets from 2,034 AD and comparison participants spanning 27 sites curated by the ENIGMA Addiction Working Group. Data were grouped into a training set used for internal validation including 1,652 participants (692 AD, 24 sites), and a test set used for external validation with 382 participants (146 AD, 3 sites). An exploratory data analysis was first conducted, followed by an evolutionary search based feature selection to site generalizable and high performing subsets of brain measurements. Exploratory data analysis revealed that inclusion of case‐ and control‐only sites led to the inadvertent learning of site‐effects. Cross validation methods that do not properly account for site can drastically overestimate results. Evolutionary‐based feature selection leveraging leave‐one‐site‐out cross‐validation, to combat unintentional learning, identified cortical thickness in the left superior frontal gyrus and right lateral orbitofrontal cortex, cortical surface area in the right transverse temporal gyrus, and left putamen volume as final features. Ridge regression restricted to these features yielded a test‐set area under the receiver operating characteristic curve of 0.768. These findings evaluate strategies for handling multi‐site data with varied underlying class distributions and identify potential biomarkers for individuals with current AD.
This item appears in the following Collection(s)
- Academic publications [227901]
- Donders Centre for Cognitive Neuroimaging [3569]
- Electronic publications [107368]
- Faculty of Social Sciences [28471]
- Open Access publications [76499]
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