Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2017 Jan-Feb;21(1):69-73.
doi: 10.1016/j.bjpt.2016.12.006. Epub 2017 Jan 14.

Construct and discriminant validity of STarT Back Screening Tool - Brazilian version

Bruna Pilz  1 , Rodrigo A Vasconcelos  2 , Paulo P Teixeira  3 , Wilson Mello  3 , Freddy B Marcondes  4 , Jonathan C Hill  5 , Débora B Grossi  6
Affiliations

Construct and discriminant validity of STarT Back Screening Tool - Brazilian version

Bruna Pilz et al. Braz J Phys Ther. 2017 Jan-Feb.

Abstract

Background: The STarT Back Screening Tool (SBST) was developed to stratify low back pain patients according to their risk of future physical disability so that prognostic subgroups can receive matched treatments in primary care.

Objective: To measure the construct and discriminative validity of the SBST-Brazil questionnaire.

Method: A hundred and fifty one patients were recruited to test the construct and discriminative validity comparing the SBST-Brazil to the Brazilian Version of the Oswestry Disability Index (ODI), Roland Morris Disability Questionnaire (RMDQ) and Fear-Avoidance Beliefs Questionnaire-Work (FABQ-W) and Physical Activity (FABQ-PA) subscales at baseline. Spearman's rank-order correlation and area under the curve (AUC) derived from receiver operating curves (ROC) for total scores and psychosocial subscale score of the SBST-Brazil were used for construct and discriminant validity analysis, respectively.

Results: The SBST-Brazil total and psychosocial subscale scores had good and moderate correlation with ODI (r=0.61; r=0.56, respectively) and good with RMDQ (r=0.70; r=0.64, respectively). Both scores of the SBST-Brazil total and psychosocial subscale correlated weakly and moderately with the FABQ-PA (r=0.28; r=0.34, respectively) and weakly with the FABQ-W (r=0.18; r=0.20, respectively). The discriminant validity with AUCs for the total and psychosocial subscale scores against reference standard ranged from 0.66 for kinesiophobia to 0.88 for disability.

Conclusion: The SBST-Brazil showed a moderate to good correlation with the disability tools, but a weak correlation with fear-avoidance beliefs. The results of discriminant validity suggest that SBST-Brazil is able to discriminate low back pain patients with disability and fear-avoidance beliefs.

Keywords: Low back pain; Outcome measurement; Physical therapy; STarT Back Screening Tool; Validity.

PubMed Disclaimer

References

    1. Bruyère O., Demoulin M., Beaudart C. Validity and reliability of the French version of the STarT Back Screening Tool for patients with low back pain. Spine (Phila Pa 1976) 2014;15(39):123–128. PMid: 24108286. - PubMed
    1. Global Burden of Disease Study 2013 Collaborators Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013. The Lancet. 2015;386(9995):743–800. PMid: 26063472. - PMC - PubMed
    1. Linton S.J., Shaw W.S. Impact of psychological factors in the experience of pain. Phys Ther. 2011;91(5):700–711. PMid: 21451097. - PubMed
    1. Currie S.R., Wang J. Chronic back pain and major depression in the general Canadian population. Pain. 2004;107(1–2):54–60. PMid: 14715389. - PubMed
    1. Schmitz N., Wang J., Malla A., Lesage A. Joint effect of depression and chronic conditions on disability: results from a population-based study. Psychosom Med. 2007;69(4):332–338. PMid: 17470668. - PubMed

LinkOut - more resources