Modelling psychiatric measures using Skew-Normal distributions

N Counsell; M Cortina-Borja; A Lehtonen; A Stein

doi:10.1016/j.eurpsy.2010.08.006

Modelling psychiatric measures using Skew-Normal distributions

Eur Psychiatry. 2011 Mar;26(2):112-4. doi: 10.1016/j.eurpsy.2010.08.006. Epub 2010 Oct 30.

Authors

N Counsell¹, M Cortina-Borja, A Lehtonen, A Stein

Affiliation

¹ Department of Psychiatry, Warneford Hospital, University of Oxford, Oxford, UK. Nicholas.Counsell@psych.ox.ac.uk

Abstract

Data from psychiatric research frequently exhibit departures from Normality. Methods which utilise the data optimally to model the distribution directly are available. We highlight the issue of modelling skewness, resulting from screening instruments where the majority of respondents are healthy individuals and few participants have a value reflecting particular disorders.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Humans
Likelihood Functions
Mass Screening / methods*
Mental Disorders / classification*
Mental Disorders / diagnosis*
Mental Disorders / epidemiology
Mentally Ill Persons / statistics & numerical data
Models, Psychological*
Normal Distribution
Reference Values
United Kingdom

Abstract

Publication types

MeSH terms

Grants and funding