A. Langenfeld1, C. Bastiaenen2, F. Brunner3, J. Swanenburg1 (1University of Zurich, Department of Chiropractic Medicine, Balgrist University Hospital ; 2Maastricht University, Department of Epidemiology, CAPHRI School for Public Healthy and Primary Care NL; 3University of Zurich, Department of Physical Medicine and Rheumatology, Balgrist University Hospital)
The Orebro Musculoskeletal Pain Screening Questionnaire (OMPSQ) can be used to identify patients with spinal pain. To date, the OMPSQ has been mainly used in patients with low back pain but rarely in in patients with neck pain (NP). The original German version of the OMPSQ has not been validated in patients with chronic neck pain (cNP). Therefore, this study aimed to evaluate the OMPSQ-G in German-speaking patients with chronic neck pain.
Cross-cultural adaptation and translation followed international guidelines. Patients had chronic NP for at least 90 days and were able to speak, read and write German. Patients were excluded for "red flags". Participants completed three questionnaires [OMPSQ, neck disability index German version (NDI-G) and visual analogue pain rating scale (VAS)], twice within a week.Consistency of VAS ratings was tested using a paired t-test. Discriminant validity was tested using the Mann–Whitney U test. Criterion validity was established by correlating the total score of the OMPSQ-G with VAS and NDI-G scores (Spearman's rho). Factor analysis with maximum likelihood extraction and varimax rotation was performed to assess the internal structure. Floor and ceiling effects were assessed for content validity. Reliability was assessed using Intraclass correlation coefficients (ICCs) and their associated 95% confidence intervals (CIs). In addition, internal consistency was measured.
OMPSQ-G scores differed significantly between healthy and cNP group at baseline (z = −4.6; p < 0.001) and at the second time point (z = −4.8; p < 0.001). Correlations between OMPSQ-G, NDI-G and VAS were significant at both time points. The OMPSQ-G showed high test–retest reliability (ICC, 0.93; 95% CI, 0.88–0.96). Cronbach's alpha was 0.94.
This is the first translation of the long-form OMPSQ into German. The scores of the OMPSQ-G in chronic neck pain patients were consistent with the NDI-G and VAS; NDI-G indicated mild disability, and the VAS score indicated moderate pain.
Given the good validity and reliability of OMPSQ-G demonstrated in this study, the questionnaire can be considered a validated tool for identifying patients with chronic neck pain.