The emetophobia questionnaire (EmetQ-13): Psychometric validation of a measure of specific phobia of vomiting (emetophobia)

Mark J Boschen; David Veale; Nell Ellison; Tamara Reddell

doi:10.1016/j.janxdis.2013.08.004

The emetophobia questionnaire (EmetQ-13): Psychometric validation of a measure of specific phobia of vomiting (emetophobia)

Mark J Boschen, David Veale, Nell Ellison, Tamara Reddell

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Abstract

This study reports on the development and psychometric evaluation of a self-report assessment of the severity of symptoms of emetophobia. Using a sample of 95 individuals with emetophobia, and a matched sample of 90 control participants, a 13-items inventory was developed that showed a clear three-factor structure. The EmetQ-13 had good internal consistency (α=.82 in the clinical sample, and α=.85 in the control sample), and one-week test-retest reliability (rxx=.76). The EmetQ-13 showed significant correlations with another measure of emetophobia symptoms, the Specific Phobia of Vomiting Inventory, and related constructs such as disgust sensitivity. The measure showed excellent ability to classify emetophobic and non-emetophobic individuals, with correct assignment in 96.2% of cases. The EmetQ-13 also correlated significantly with a behavioural approach test using a vomit-like stimulus. The initial evaluation of the EmetQ-13 suggests that it is a reliable and valid measure for the assessment of emetophobia.

Original language	English
Article number	N/A
Pages (from-to)	670-677
Number of pages	8
Journal	Journal of Anxiety Disorders
Volume	27
Issue number	7
DOIs	https://doi.org/10.1016/j.janxdis.2013.08.004
Publication status	Published - Oct 2013

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Acknowledged-BRC
Acknowledged-BRC-13/14

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10.1016/j.janxdis.2013.08.004

The emetophobia questionnaire (EmetQ-13): Psychometric validation of a measure of specific phobia of vomiting (emetophobia)
NOTICE: this is the author’s version of a work that was accepted for publication in the Journal of Anxiety Disorders. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication.
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39Q EmetQ 13 QUESTIONNAIRE

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title = "The emetophobia questionnaire (EmetQ-13): Psychometric validation of a measure of specific phobia of vomiting (emetophobia)",

abstract = "This study reports on the development and psychometric evaluation of a self-report assessment of the severity of symptoms of emetophobia. Using a sample of 95 individuals with emetophobia, and a matched sample of 90 control participants, a 13-items inventory was developed that showed a clear three-factor structure. The EmetQ-13 had good internal consistency (α=.82 in the clinical sample, and α=.85 in the control sample), and one-week test-retest reliability (rxx=.76). The EmetQ-13 showed significant correlations with another measure of emetophobia symptoms, the Specific Phobia of Vomiting Inventory, and related constructs such as disgust sensitivity. The measure showed excellent ability to classify emetophobic and non-emetophobic individuals, with correct assignment in 96.2% of cases. The EmetQ-13 also correlated significantly with a behavioural approach test using a vomit-like stimulus. The initial evaluation of the EmetQ-13 suggests that it is a reliable and valid measure for the assessment of emetophobia.",

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AU - Reddell, Tamara

PY - 2013/10

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N2 - This study reports on the development and psychometric evaluation of a self-report assessment of the severity of symptoms of emetophobia. Using a sample of 95 individuals with emetophobia, and a matched sample of 90 control participants, a 13-items inventory was developed that showed a clear three-factor structure. The EmetQ-13 had good internal consistency (α=.82 in the clinical sample, and α=.85 in the control sample), and one-week test-retest reliability (rxx=.76). The EmetQ-13 showed significant correlations with another measure of emetophobia symptoms, the Specific Phobia of Vomiting Inventory, and related constructs such as disgust sensitivity. The measure showed excellent ability to classify emetophobic and non-emetophobic individuals, with correct assignment in 96.2% of cases. The EmetQ-13 also correlated significantly with a behavioural approach test using a vomit-like stimulus. The initial evaluation of the EmetQ-13 suggests that it is a reliable and valid measure for the assessment of emetophobia.

AB - This study reports on the development and psychometric evaluation of a self-report assessment of the severity of symptoms of emetophobia. Using a sample of 95 individuals with emetophobia, and a matched sample of 90 control participants, a 13-items inventory was developed that showed a clear three-factor structure. The EmetQ-13 had good internal consistency (α=.82 in the clinical sample, and α=.85 in the control sample), and one-week test-retest reliability (rxx=.76). The EmetQ-13 showed significant correlations with another measure of emetophobia symptoms, the Specific Phobia of Vomiting Inventory, and related constructs such as disgust sensitivity. The measure showed excellent ability to classify emetophobic and non-emetophobic individuals, with correct assignment in 96.2% of cases. The EmetQ-13 also correlated significantly with a behavioural approach test using a vomit-like stimulus. The initial evaluation of the EmetQ-13 suggests that it is a reliable and valid measure for the assessment of emetophobia.

KW - Acknowledged-BRC

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ER -

The emetophobia questionnaire (EmetQ-13): Psychometric validation of a measure of specific phobia of vomiting (emetophobia)

Abstract

Keywords

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