Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability.
BACKGROUND: Self-rating scales are widely used in general adult practice; however, there is no reliable and valid method for assessing state anxiety in people with intellectual disability (ID). The present study describes the development and psychometric evaluation of a new scale, the Glasgow Anxiet...
Main Authors: | , |
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Format: | Journal article |
Language: | English |
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2003
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author | Mindham, J Espie, C |
author_facet | Mindham, J Espie, C |
author_sort | Mindham, J |
collection | OXFORD |
description | BACKGROUND: Self-rating scales are widely used in general adult practice; however, there is no reliable and valid method for assessing state anxiety in people with intellectual disability (ID). The present study describes the development and psychometric evaluation of a new scale, the Glasgow Anxiety Scale for People with an Intellectual Disability (GAS-ID). METHODS: First, an item pool was generated from focus groups, a review of the literature and clinician feedback. Secondly, a draft scale was administered to 19 anxious and 16 non-anxious people with ID for further validation and appraisal of reliability. Thirdly, the scale was completed by 19 anxious, non-ID people for cross-validation with the Beck Anxiety Inventory (BAI). Finally, physiological concomitants were validated by pulse-oximetry. RESULTS: The 27-item GAS-ID discriminated anxious from non-anxious participants, had good test-retest reliability (r = 0.95) and internal consistency (alpha = 0.96), and was reasonably correlated with the BAI (rho = 0.75). The correlation between the physiological subscale of the GAS-ID and changes in pulse rate was moderately significant (rho = 0.52). CONCLUSIONS: This preliminary study suggests that the GAS-ID offers a psychometrically robust and practical (5-10 min) approach to the appraisal of anxiety in this population. |
first_indexed | 2024-03-07T06:58:11Z |
format | Journal article |
id | oxford-uuid:fed86894-cc9d-46b5-a6a9-3d99d5c2922c |
institution | University of Oxford |
language | English |
last_indexed | 2024-03-07T06:58:11Z |
publishDate | 2003 |
record_format | dspace |
spelling | oxford-uuid:fed86894-cc9d-46b5-a6a9-3d99d5c2922c2022-03-27T13:39:46ZGlasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fed86894-cc9d-46b5-a6a9-3d99d5c2922cEnglishSymplectic Elements at Oxford2003Mindham, JEspie, CBACKGROUND: Self-rating scales are widely used in general adult practice; however, there is no reliable and valid method for assessing state anxiety in people with intellectual disability (ID). The present study describes the development and psychometric evaluation of a new scale, the Glasgow Anxiety Scale for People with an Intellectual Disability (GAS-ID). METHODS: First, an item pool was generated from focus groups, a review of the literature and clinician feedback. Secondly, a draft scale was administered to 19 anxious and 16 non-anxious people with ID for further validation and appraisal of reliability. Thirdly, the scale was completed by 19 anxious, non-ID people for cross-validation with the Beck Anxiety Inventory (BAI). Finally, physiological concomitants were validated by pulse-oximetry. RESULTS: The 27-item GAS-ID discriminated anxious from non-anxious participants, had good test-retest reliability (r = 0.95) and internal consistency (alpha = 0.96), and was reasonably correlated with the BAI (rho = 0.75). The correlation between the physiological subscale of the GAS-ID and changes in pulse rate was moderately significant (rho = 0.52). CONCLUSIONS: This preliminary study suggests that the GAS-ID offers a psychometrically robust and practical (5-10 min) approach to the appraisal of anxiety in this population. |
spellingShingle | Mindham, J Espie, C Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability. |
title | Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability. |
title_full | Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability. |
title_fullStr | Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability. |
title_full_unstemmed | Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability. |
title_short | Glasgow Anxiety Scale for people with an Intellectual Disability (GAS-ID): development and psychometric properties of a new measure for use with people with mild intellectual disability. |
title_sort | glasgow anxiety scale for people with an intellectual disability gas id development and psychometric properties of a new measure for use with people with mild intellectual disability |
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