Construct validity and reliability of a test for sacroiliac dysfunction: Downing test

IF 1.1 4区医学 Q2 MEDICINE, GENERAL & INTERNAL

International Journal of Osteopathic Medicine Pub Date : 2023-05-28 DOI:10.1016/j.ijosm.2023.100669

Rafael P. Ribeiro , Filipe G. Guerrero , Eduardo N. Camargo , Luiza R. Pivotto , Mateus A. Aimi , Cláudia T. Candotti , Jefferson F. Loss

{"title":"Construct validity and reliability of a test for sacroiliac dysfunction: Downing test","authors":"Rafael P. Ribeiro , Filipe G. Guerrero , Eduardo N. Camargo , Luiza R. Pivotto , Mateus A. Aimi , Cláudia T. Candotti , Jefferson F. Loss","doi":"10.1016/j.ijosm.2023.100669","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>Low back pain is the main cause of global disability, with 13–30% of patients with low back pain reporting pain in the sacroiliac joint (SIJ). One of the clinical tests available for assessing SIJ mobility is the Downing test. However, information about the reliability and validity of this test is scarce in the scientific literature.</p></div><div><h3>Objectives</h3><p>To evaluate the construct validity and intra and inter-rater reliability of the Downing test.</p></div><div><h3>Methods</h3><p>Prospective study, in which the sample consisted of 30 individuals of both sexes. The evaluation team was composed of 5 researchers. The evaluations took place on two different days: (1st day) inter-rater reliability and construct validity; (2nd day) intra-rater reliability. The reference standard used for construct validity was three-dimensional measurements, using the BTS Smart-DX system. Statistical analysis: the percentage (%) agreement and the kappa statistic (k) were used.</p></div><div><h3>Results</h3><p>Moderate agreement was found for construct validity for the conclusion of the test (% agreement = 54.5%; k = 0.43; p < 0.01) and intra-rater reliability (% agreement = 66.7%; k = 0.43; p < 0.01). However, agreement was poor for inter-rater reliability (% agreement = 16.7%; k = 0.15; p < 0.05).</p></div><div><h3>Conclusions</h3><p>The construct validity of the Downing test was confirmed, only for the conclusion of the test, and it is reliable when applied by the same rater to healthy people, even if the rater has only 2 years of experience. The test is unreliable when it is performed by different raters. We suggest further studies that investigate the measurement properties of the Downing test, especially in symptomatic patients.</p></div>","PeriodicalId":51068,"journal":{"name":"International Journal of Osteopathic Medicine","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Osteopathic Medicine","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1746068923000135","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MEDICINE, GENERAL & INTERNAL","Score":null,"Total":0}

引用次数: 0

Abstract

Background

Low back pain is the main cause of global disability, with 13–30% of patients with low back pain reporting pain in the sacroiliac joint (SIJ). One of the clinical tests available for assessing SIJ mobility is the Downing test. However, information about the reliability and validity of this test is scarce in the scientific literature.

Objectives

To evaluate the construct validity and intra and inter-rater reliability of the Downing test.

Methods

Prospective study, in which the sample consisted of 30 individuals of both sexes. The evaluation team was composed of 5 researchers. The evaluations took place on two different days: (1st day) inter-rater reliability and construct validity; (2nd day) intra-rater reliability. The reference standard used for construct validity was three-dimensional measurements, using the BTS Smart-DX system. Statistical analysis: the percentage (%) agreement and the kappa statistic (k) were used.

Results

Moderate agreement was found for construct validity for the conclusion of the test (% agreement = 54.5%; k = 0.43; p < 0.01) and intra-rater reliability (% agreement = 66.7%; k = 0.43; p < 0.01). However, agreement was poor for inter-rater reliability (% agreement = 16.7%; k = 0.15; p < 0.05).

Conclusions

The construct validity of the Downing test was confirmed, only for the conclusion of the test, and it is reliable when applied by the same rater to healthy people, even if the rater has only 2 years of experience. The test is unreliable when it is performed by different raters. We suggest further studies that investigate the measurement properties of the Downing test, especially in symptomatic patients.

查看原文本刊更多论文

构建骶髂功能障碍测试的效度和信度:Downing检验

背景:腰痛是全球致残的主要原因，13-30%的腰痛患者报告骶髂关节(SIJ)疼痛。可用于评估SIJ流动性的临床试验之一是唐宁试验。然而，关于该测试的信度和效度的信息在科学文献中很少。目的评价唐宁测验的构念效度和量表内、量表间信度。方法前瞻性研究，样本包括30名男女。评估小组由5名研究人员组成。评估分两天进行:(第一天)评估者间信度和构念效度;(第2天)组内信度。建构效度的参考标准为三维测量，采用BTS Smart-DX系统。统计分析:采用一致性百分比(%)和kappa统计量(k)。结果测试结论的构念效度有中等程度的一致性(%一致性= 54.5%;k = 0.43;p & lt;0.01)和评分内信度(%一致性= 66.7%;k = 0.43;p & lt;0.01)。然而，评估者间信度的一致性较差(一致性% = 16.7%;k = 0.15;p & lt;0.05)。结论Downing检验的构念效度是被证实的，仅对检验的结论而言是有效的;当同一位评核员应用于健康人群时，即使评核员只有2年的工作经验，其构念效度也是可靠的。当由不同的评价者进行测试时，测试是不可靠的。我们建议进一步研究唐宁试验的测量特性，特别是在有症状的患者中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Osteopathic Medicine 医学-医学：内科

CiteScore

2.20

自引率

36.80%

发文量

审稿时长

3 months

期刊介绍： The International Journal of Osteopathic Medicine is a peer-reviewed journal that provides for the publication of high quality research articles and review papers that are as broad as the many disciplines that influence and underpin the principles and practice of osteopathic medicine. Particular emphasis is given to basic science research, clinical epidemiology and health social science in relation to osteopathy and neuromusculoskeletal medicine. The Editorial Board encourages submission of articles based on both quantitative and qualitative research designs. The Editorial Board also aims to provide a forum for discourse and debate on any aspect of osteopathy and neuromusculoskeletal medicine with the aim of critically evaluating existing practices in regard to the diagnosis, treatment and management of patients with neuromusculoskeletal disorders and somatic dysfunction. All manuscripts submitted to the IJOM are subject to a blinded review process. The categories currently available for publication include reports of original research, review papers, commentaries and articles related to clinical practice, including case reports. Further details can be found in the IJOM Instructions for Authors. Manuscripts are accepted for publication with the understanding that no substantial part has been, or will be published elsewhere.