Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective study
<p>Abstract</p> <p>Background</p> <p>To confirm the internal structure of the Health Related Quality of Life for Eating Disorders version 2 questionnaire (HeRQoLEDv2) and create and validate a shortened version (HeRQoLED-S).</p> <p>Methods</p> <p>...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2010-03-01
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| Series: | Health and Quality of Life Outcomes |
| Online Access: | http://www.hqlo.com/content/8/1/29 |
| _version_ | 1818145567481528320 |
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| author | Bilbao Amaia Padierna Jesús A Quintana Jose M Las Hayas Carlota Muñoz Pedro |
| author_facet | Bilbao Amaia Padierna Jesús A Quintana Jose M Las Hayas Carlota Muñoz Pedro |
| author_sort | Bilbao Amaia |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>To confirm the internal structure of the Health Related Quality of Life for Eating Disorders version 2 questionnaire (HeRQoLEDv2) and create and validate a shortened version (HeRQoLED-S).</p> <p>Methods</p> <p>324 patients with eating disorders were assessed at baseline and one year later (75.6% of whom responded). We performed a confirmatory factor analysis of the HeRQoLEDv2 using baseline data, and then a Rasch analysis to shorten the questionnaire. Data obtained at year one was used to confirm the structure of the HeRQoLED short form and evaluate its validity and reliability.</p> <p>Results</p> <p>Two latent second-order factors -- social maladjustment and mental health and functionality -- fit the data for the HeRQoLEDv2. Rasch analysis was computed separately for the two latent second-order factors and shortened the HeRQoLEDv2 to 20 items. Infit and outfit indices were acceptable, with the confirmatory factor analysis of the HeRQoLED short form giving a root mean square error of approximation of 0.07, a non-normed fit index and a comparative fit index exceeding 0.90. The validity was also supported by the correlation with the convergent measures: the social maladjustment factor correlated 0.82 with the dieting concern factor of the Eating Attitudes Test-26 and the mental health and functionality factor correlated -0.69 with the mental summary component of the Short Form-12. Cronbach alphas exceeded 0.89.</p> <p>Conclusions</p> <p>Two main factors, social maladjustment and mental health and functionality, explain the majority of HeRQoLEDv2 scores. The shortened version maintains good psychometric properties, though it must be validated in independent samples.</p> |
| first_indexed | 2024-12-11T12:05:31Z |
| format | Article |
| id | doaj.art-d4f31c00021a412a82701921bfcada40 |
| institution | Directory Open Access Journal |
| issn | 1477-7525 |
| language | English |
| last_indexed | 2024-12-11T12:05:31Z |
| publishDate | 2010-03-01 |
| publisher | BMC |
| record_format | Article |
| series | Health and Quality of Life Outcomes |
| spelling | doaj.art-d4f31c00021a412a82701921bfcada402022-12-22T01:07:56ZengBMCHealth and Quality of Life Outcomes1477-75252010-03-01812910.1186/1477-7525-8-29Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective studyBilbao AmaiaPadierna Jesús AQuintana Jose MLas Hayas CarlotaMuñoz Pedro<p>Abstract</p> <p>Background</p> <p>To confirm the internal structure of the Health Related Quality of Life for Eating Disorders version 2 questionnaire (HeRQoLEDv2) and create and validate a shortened version (HeRQoLED-S).</p> <p>Methods</p> <p>324 patients with eating disorders were assessed at baseline and one year later (75.6% of whom responded). We performed a confirmatory factor analysis of the HeRQoLEDv2 using baseline data, and then a Rasch analysis to shorten the questionnaire. Data obtained at year one was used to confirm the structure of the HeRQoLED short form and evaluate its validity and reliability.</p> <p>Results</p> <p>Two latent second-order factors -- social maladjustment and mental health and functionality -- fit the data for the HeRQoLEDv2. Rasch analysis was computed separately for the two latent second-order factors and shortened the HeRQoLEDv2 to 20 items. Infit and outfit indices were acceptable, with the confirmatory factor analysis of the HeRQoLED short form giving a root mean square error of approximation of 0.07, a non-normed fit index and a comparative fit index exceeding 0.90. The validity was also supported by the correlation with the convergent measures: the social maladjustment factor correlated 0.82 with the dieting concern factor of the Eating Attitudes Test-26 and the mental health and functionality factor correlated -0.69 with the mental summary component of the Short Form-12. Cronbach alphas exceeded 0.89.</p> <p>Conclusions</p> <p>Two main factors, social maladjustment and mental health and functionality, explain the majority of HeRQoLEDv2 scores. The shortened version maintains good psychometric properties, though it must be validated in independent samples.</p>http://www.hqlo.com/content/8/1/29 |
| spellingShingle | Bilbao Amaia Padierna Jesús A Quintana Jose M Las Hayas Carlota Muñoz Pedro Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective study Health and Quality of Life Outcomes |
| title | Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective study |
| title_full | Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective study |
| title_fullStr | Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective study |
| title_full_unstemmed | Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective study |
| title_short | Use of rasch methodology to develop a short version of the Health Related Quality of life for Eating Disorders questionnaire: a prospective study |
| title_sort | use of rasch methodology to develop a short version of the health related quality of life for eating disorders questionnaire a prospective study |
| url | http://www.hqlo.com/content/8/1/29 |
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