Abstract
Health centers of primary care from a region of northwestern Spain. The final sample was 122 patients diagnosed with chronic low back pain. The sampling was completed with 30 additional healthy subjects. OPTIMAL-confidence questionnaire, Numerical Pain Rating Scale, Chronic Pain Self-efficacy Scale, and ad hoc questionnaire to collect socio-demographic and clinical variables. Results: Cronbach's alpha for the OPTIMAL-confidence questionnaire was 0.91. The association of OPTIMAL-confidence with the self-efficacy, pain intensity, and movement ability scales was moderate and significant (p < 0.001). Regarding the low back pain population, significant differences were observed in confidence levels according to age and the need for walking aids (p < 0.009). The OPTIMAL-confidence questionnaire also showed significant discrimination between the low back pain group and the no back pain group (p < 0.001). The confidence interval was 95%. Conclusions: The population with low back pain shows less confidence in their ability to perform movements, compared to the general population. OPTIMAL is an instrument that can discriminate between patients who present chronic low back pain and those who do not.
Published Version
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