Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptoms
<p>Abstract</p> <p>Background</p> <p>The Shoulder Pain and Disability Index (SPADI) is a self-administered questionnaire that aims to measure pain and disability associated with shoulder disease. The aim of the present study was to investigate the construct validity and...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2011-01-01
|
| Series: | BMC Musculoskeletal Disorders |
| Online Access: | http://www.biomedcentral.com/1471-2474/12/8 |
| _version_ | 1818569968080388096 |
|---|---|
| author | Taylor Anne W Lester Susan Hill Catherine L Shanahan Michael E Gill Tiffany K |
| author_facet | Taylor Anne W Lester Susan Hill Catherine L Shanahan Michael E Gill Tiffany K |
| author_sort | Taylor Anne W |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>The Shoulder Pain and Disability Index (SPADI) is a self-administered questionnaire that aims to measure pain and disability associated with shoulder disease. The aim of the present study was to investigate the construct validity and factor structure of the SPADI in a population-based study of patients with self-reported chronic shoulder symptoms.</p> <p>Methods</p> <p>The North West Adelaide Health Study is a representative longitudinal cohort study of people aged 18 years and over. The original sample was randomly selected and recruited by telephone interview. Overall, 3 206 participants returned to the clinic during the second stage (2004-2006) and were asked to report whether they had pain, aching or stiffness on most days in either of their shoulders. Data was also collected on body mass index and shoulder range of motion (ROM) and demographic factors. The SPADI (numeric rating scale) was administered to participants with shoulder symptoms. Principal components factor analysis, with varimax rotation of factor loadings, was used to assess subscale structure of SPADI. Correlations between the SPADI, shoulder ROM and SF-36 were performed.</p> <p>Results</p> <p>Overall, 22.3% of participants indicated that they had pain, aching or stiffness in either of their shoulders. SPADI results were available for 588 of participants with current shoulder symptoms. The internal consistency of the SPADI subscales were high (Cronbach's alpha > 0.92). Two factors, explaining 61.4% of the total variance were extracted by factor analysis. These were interpreted as disability and pain respectively. There was a strong negative correlation between SPADI disability subscale scores and shoulder range of motion. SPADI disability, but not pain, subscale scores were correlated with age.</p> <p>Conclusions</p> <p>The SPADI is a valid measure to assess pain and disability in people with shoulder pain in a population-based study. In this setting, the SPADI had a bidimensional structure with both pain and disability subscales.</p> |
| first_indexed | 2024-12-14T06:54:37Z |
| format | Article |
| id | doaj.art-dc6a7037c5f14ecf9365049ff9c34ec7 |
| institution | Directory Open Access Journal |
| issn | 1471-2474 |
| language | English |
| last_indexed | 2024-12-14T06:54:37Z |
| publishDate | 2011-01-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Musculoskeletal Disorders |
| spelling | doaj.art-dc6a7037c5f14ecf9365049ff9c34ec72022-12-21T23:12:45ZengBMCBMC Musculoskeletal Disorders1471-24742011-01-01121810.1186/1471-2474-12-8Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptomsTaylor Anne WLester SusanHill Catherine LShanahan Michael EGill Tiffany K<p>Abstract</p> <p>Background</p> <p>The Shoulder Pain and Disability Index (SPADI) is a self-administered questionnaire that aims to measure pain and disability associated with shoulder disease. The aim of the present study was to investigate the construct validity and factor structure of the SPADI in a population-based study of patients with self-reported chronic shoulder symptoms.</p> <p>Methods</p> <p>The North West Adelaide Health Study is a representative longitudinal cohort study of people aged 18 years and over. The original sample was randomly selected and recruited by telephone interview. Overall, 3 206 participants returned to the clinic during the second stage (2004-2006) and were asked to report whether they had pain, aching or stiffness on most days in either of their shoulders. Data was also collected on body mass index and shoulder range of motion (ROM) and demographic factors. The SPADI (numeric rating scale) was administered to participants with shoulder symptoms. Principal components factor analysis, with varimax rotation of factor loadings, was used to assess subscale structure of SPADI. Correlations between the SPADI, shoulder ROM and SF-36 were performed.</p> <p>Results</p> <p>Overall, 22.3% of participants indicated that they had pain, aching or stiffness in either of their shoulders. SPADI results were available for 588 of participants with current shoulder symptoms. The internal consistency of the SPADI subscales were high (Cronbach's alpha > 0.92). Two factors, explaining 61.4% of the total variance were extracted by factor analysis. These were interpreted as disability and pain respectively. There was a strong negative correlation between SPADI disability subscale scores and shoulder range of motion. SPADI disability, but not pain, subscale scores were correlated with age.</p> <p>Conclusions</p> <p>The SPADI is a valid measure to assess pain and disability in people with shoulder pain in a population-based study. In this setting, the SPADI had a bidimensional structure with both pain and disability subscales.</p>http://www.biomedcentral.com/1471-2474/12/8 |
| spellingShingle | Taylor Anne W Lester Susan Hill Catherine L Shanahan Michael E Gill Tiffany K Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptoms BMC Musculoskeletal Disorders |
| title | Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptoms |
| title_full | Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptoms |
| title_fullStr | Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptoms |
| title_full_unstemmed | Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptoms |
| title_short | Factor structure and validity of the shoulder pain and disability index in a population-based study of people with shoulder symptoms |
| title_sort | factor structure and validity of the shoulder pain and disability index in a population based study of people with shoulder symptoms |
| url | http://www.biomedcentral.com/1471-2474/12/8 |
| work_keys_str_mv | AT taylorannew factorstructureandvalidityoftheshoulderpainanddisabilityindexinapopulationbasedstudyofpeoplewithshouldersymptoms AT lestersusan factorstructureandvalidityoftheshoulderpainanddisabilityindexinapopulationbasedstudyofpeoplewithshouldersymptoms AT hillcatherinel factorstructureandvalidityoftheshoulderpainanddisabilityindexinapopulationbasedstudyofpeoplewithshouldersymptoms AT shanahanmichaele factorstructureandvalidityoftheshoulderpainanddisabilityindexinapopulationbasedstudyofpeoplewithshouldersymptoms AT gilltiffanyk factorstructureandvalidityoftheshoulderpainanddisabilityindexinapopulationbasedstudyofpeoplewithshouldersymptoms |