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[Clinical-demographic factors associated with fear-avoidance in subjects with non-specific chronic low back pain in Primary Care: secondary analysis of intervention study].

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Abstract
To describe some sociodemographics and clinical characteristics of subjects with Non-specific Chronic Low Back Pain (NCLBP) in Primary Care, as well as to investigate their association with Fear-Avoidance (FA). Cross-sectional. Secondary analysis of an intervention study. Basic Health Areas in Costa del Sol Health District (Málaga, Spain). An analysis was performed on 147 subjects with NCLBP from a previous intervention study database in Primary Care Physiotherapy (PCP). Characteristics: age 18-65; understanding of the Spanish language; absence of cognitive disorders, fibromyalgia or dorsolumbar surgery, and to be able to perform physical exercise. The main variable was FA level (FABQ and the FABQ-PA and FABQ-W) sub-scales. Clinical variables included: pain (NRPS-11), disability (RMQ), evolution, previous treatments and diagnostic imaging. The sociodemographic variables included: gender, age, educational level, and employment status. Just over half (51.7%) of the subjects had high FA on the FABQ-PA sub-scale. Sick leave (SL) [β=24.45 (P=.009*); β=13.03 (P=.016*); β=14.04 (P=.011*) for FABQ, FABQ-PA and FABQ-W, respectively]; primary studies level [β=15.09 (P=.01*); β=9.73 (P=.01*) for FABQ and FABQ-PA], and disability [β=1.45 (P Some sociodemographic and clinical features of the NCLBP population are presented. Imaging tests (81.63%) and previous passive treatments (55.78%) could reflect problems of adherence to recommendations of CPGs. Sick leave, primary studies level, and disability were associated with FA. The findings should be interpreted in the light of possible limitations. Some suggestions for clinical practice are provided.
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Atención primaria, Fear, Fisioterapia, Low back pain, Lumbalgia, Miedo, Physical therapy modalities, Primary health care
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