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Updated: Jun 1, 2026

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Published on: April 28, 2022
Alcohol dependence in men: reliability and heritability
Eivind Ystrom1, Ted Reichborn-Kjennerud, Steven H Aggen
1Department of Adult Mental Health, Norwegian Institute of Public Health, Oslo, Norway. eivind.ystrom@fhi.no
Background:
The assessment of a Diagnostic and Statistical Manual of Mental Disorders Fourth Edition (DSM-IV) life-time history of alcohol dependence (LTH-AD) has been found to be moderately reliable and substantially heritable. However, in studies of the heritability of LTH-AD, measurement error could not be discriminated from the true unique environmental effects. The aims of this study were to: (i) estimate the reliability of LTH-AD in a population based sample, (ii) identify characteristics of LTH-AD predicting a reliable diagnosis, (iii) investigate the heritability of LTH-AD as a function of diagnostic confidence, and (iv) to estimate the genetic and environmental influences on LTH-AD correcting for measurement error.
Methods:
An unselected sample of 4,203 male twins was interviewed twice approximately 1-year apart assessing DSM-IV LTH-AD over the same period of life. Logistic regression was used to identify clinical features that predict a reliable diagnosis LTH-AD. Genetic and environmental influences on reliable LTH-AD were examined using structural equation models.
Results:
Reliability of the diagnosis of LTH-AD was moderate (κ = 0.54) and was predicted by the number of AD symptoms, treatment seeking, duration of most severe episode, and a great deal of time spent to obtain, use, or recover from alcohol use (DSM-IV AD criterion #5). Using an index of caseness, heritability of LTH-AD increased as a function of diagnostic confidence. Accounting for errors of measurement in a multivariate twin model, the heritability of LTH-AD increased from 55 to 71%.
Conclusions:
Reliably diagnosed LTH-AD can be predicted by characteristics relevant to the disorder. LTH-AD appears to be a moderately reliable disorder of high heritability.
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