Validity and reliability of an online extended version of the Nordic Musculoskeletal Questionnaire (NMQ-E2) to measure nurses' fitness
Place of Publication
Faculty of Health, Engineering and Science
School of Nursing and Midwifery / School of Medical and Health Sciences
Aims and objectives. To describe modiﬁcations to a second extended version of the Nordic Musculoskeletal Questionnaire for online use in nursing populations, and check validity and reliability. Background. The Nordic Musculoskeletal Questionnaire has been used to assess the severity and impact of musculoskeletal symptoms in occupational groups. The reliability of a previous extended version was established for paper-based, self- administration among nursing students. This current study extended the questionnaire to collect more information regarding musculoskeletal symptoms in all nine body regions and their work-relatedness, as an instrument is needed to gather evidence about the impact of ﬁtness levels on occupational musculoskeletal disorders among nurses. Design. Psychometric evaluation. Method. Sixty-ﬁve undergraduate nurses completed the online extended Nordic Musculoskeletal Questionnaire twice. Content validity was examined by expert review and construct validity by exploratory factor analysis of 90 responses from the ﬁrst completion. Reliability was checked by examining internal consistency, kappa statistics, proportions of observed, and positive and negative agreements, intra-class correlation coefﬁcient and standard error of measurement. Results. The instrument had high internal consistency and exploratory factor analysis revealed it was a relatively homogenous (unidimensional) measure of musculoskeletal symptom severity. Age of onset of symptoms questions were reliable, with high mean intra-class correlation coefﬁcients and low mean standard errors of measurement. Overall, questions showed high mean strengths of agreement and proportions of observed agreement: three-quarters of the prevalence questions and 99% of the severity/impact questions had 10% or fewer disagreements.