The responsiveness and interpretability of the shoulder pain and disability index

Thoomes-De Graaf, M; Scholten-Peeters, W; Duijn, E; Karel, Y; De Vet, HCW; Koes, B; Verhagen, A

The responsiveness and interpretability of the shoulder pain and disability index

Thoomes-De Graaf, M Scholten-Peeters, W Duijn, E Karel, Y De Vet, HCW Koes, B Verhagen, A

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Publication Type:: Journal Article
Citation:: Journal of Orthopaedic and Sports Physical Therapy, 2017, 47 (4), pp. 278 - 286
Issue Date:: 2017-04-01

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Field	Value	Language
dc.contributor.author	Thoomes-De Graaf, M	en_US
dc.contributor.author	Scholten-Peeters, W	en_US
dc.contributor.author	Duijn, E	en_US
dc.contributor.author	Karel, Y	en_US
dc.contributor.author	De Vet, HCW	en_US
dc.contributor.author	Koes, B	en_US
dc.contributor.author	Verhagen, A https://orcid.org/0000-0002-6195-0128	en_US
dc.date.issued	2017-04-01	en_US
dc.identifier.citation	Journal of Orthopaedic and Sports Physical Therapy, 2017, 47 (4), pp. 278 - 286	en_US
dc.identifier.issn	0190-6011	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125085
dc.description.abstract	© 2017 Journal of Orthopaedic & Sports Physical Therapy. All rights reserved. STUDY DESIGN: Clinical measurement study, prospective cohort design. BACKGROUND: Shoulder pain is a common disorder, and treatment is most often focused on a reduction of pain and functional disabilities. Several reviews have encouraged the use of the Shoulder Pain and Disability Index (SPADI) to objectify functional disability. It is important to assess the responsiveness and interpretability of the SPADI in patients seeking physical therapy treatment for their shoulder pain in a primary care setting. OBJECTIVE: To assess the responsiveness and interpretability of the SPADI in patients with shoulder pain visiting a physical therapist in primary care. METHODS: The target population consisted of patients who consulted a physical therapist for their shoulder pain. The patients received physical therapy treatment and completed the Dutchlanguage version of the SPADI at baseline and at 26-week follow-up. The interpretability floor and ceiling effects and the minimal important change (MIC) were assessed using the receiver operating characteristic method, and a visual anchor-based MIC distribution method was used to assess several Global Perceived Effect scale (GPE)-based anchors. The measurement error was calculated using the smallest detectable change. For the responsiveness, the area under the receiver operating characteristic curve was used, and correlations with the GPE and the change score of the Shoulder Disability Questionnaire (as this questionnaire measures the same construct) were assessed. RESULTS: A total of 356 patients participated at baseline and 237 (67%) returned the SPADI after 26 weeks. The mean score on the SPADI at baseline was 46.7 points (on a 0-100 scale). The SPADI showed no signs of floor and ceiling effects. The smallest detectable change was 19.7 points. The MIC was 20 (43% of baseline value), and therefore a change of 43% or more in an individual patient was considered to be clinically relevant. The area under the receiver operating characteristic curve (AUC) was 0.81, the Spearman correlation between the SPADI change score and the GPE was 0.53, and the Pearson correlation between the Shoulder Disability Questionnaire and the SPADI change score was 0.71. CONCLUSION: The results of this study confirm the responsiveness of the SPADI, making it a useful instrument to assess functional disability in longitudinal studies; however, the measurement error should be taken into account when making decisions in individual patients.	en_US
dc.relation.ispartof	Journal of Orthopaedic and Sports Physical Therapy	en_US
dc.relation.isbasedon	10.2519/jospt.2017.7079	en_US
dc.subject.classification	Orthopedics	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Shoulder Pain	en_US
dc.subject.mesh	Pain Measurement	en_US
dc.subject.mesh	Disability Evaluation	en_US
dc.subject.mesh	Prospective Studies	en_US
dc.subject.mesh	Reproducibility of Results	en_US
dc.subject.mesh	Adult	en_US
dc.subject.mesh	Middle Aged	en_US
dc.subject.mesh	Primary Health Care	en_US
dc.subject.mesh	Female	en_US
dc.subject.mesh	Male	en_US
dc.subject.mesh	Physical Therapy Modalities	en_US
dc.subject.mesh	Surveys and Questionnaires	en_US
dc.title	The responsiveness and interpretability of the shoulder pain and disability index	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	47	en_US
utslib.for	1103 Clinical Sciences	en_US
utslib.for	1106 Human Movement and Sports Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Graduate School of Health
utslib.copyright.status	closed_access
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	47	en_US

Abstract:

© 2017 Journal of Orthopaedic & Sports Physical Therapy. All rights reserved. STUDY DESIGN: Clinical measurement study, prospective cohort design. BACKGROUND: Shoulder pain is a common disorder, and treatment is most often focused on a reduction of pain and functional disabilities. Several reviews have encouraged the use of the Shoulder Pain and Disability Index (SPADI) to objectify functional disability. It is important to assess the responsiveness and interpretability of the SPADI in patients seeking physical therapy treatment for their shoulder pain in a primary care setting. OBJECTIVE: To assess the responsiveness and interpretability of the SPADI in patients with shoulder pain visiting a physical therapist in primary care. METHODS: The target population consisted of patients who consulted a physical therapist for their shoulder pain. The patients received physical therapy treatment and completed the Dutchlanguage version of the SPADI at baseline and at 26-week follow-up. The interpretability floor and ceiling effects and the minimal important change (MIC) were assessed using the receiver operating characteristic method, and a visual anchor-based MIC distribution method was used to assess several Global Perceived Effect scale (GPE)-based anchors. The measurement error was calculated using the smallest detectable change. For the responsiveness, the area under the receiver operating characteristic curve was used, and correlations with the GPE and the change score of the Shoulder Disability Questionnaire (as this questionnaire measures the same construct) were assessed. RESULTS: A total of 356 patients participated at baseline and 237 (67%) returned the SPADI after 26 weeks. The mean score on the SPADI at baseline was 46.7 points (on a 0-100 scale). The SPADI showed no signs of floor and ceiling effects. The smallest detectable change was 19.7 points. The MIC was 20 (43% of baseline value), and therefore a change of 43% or more in an individual patient was considered to be clinically relevant. The area under the receiver operating characteristic curve (AUC) was 0.81, the Spearman correlation between the SPADI change score and the GPE was 0.53, and the Pearson correlation between the Shoulder Disability Questionnaire and the SPADI change score was 0.71. CONCLUSION: The results of this study confirm the responsiveness of the SPADI, making it a useful instrument to assess functional disability in longitudinal studies; however, the measurement error should be taken into account when making decisions in individual patients.

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http://hdl.handle.net/10453/125085