TY - JOUR T1 - Adaptation and Validation of the Spanish Version of the Graded Chronic Pain Scale JO - Reumatología Clínica (English Edition) T2 - AU - Ferrer-Peña,Raúl AU - Gil-Martínez,Alfonso AU - Pardo-Montero,Joaquín AU - Jiménez-Penick,Virginia AU - Gallego-Izquierdo,Tomás AU - La Touche,Roy SN - 21735743 M3 - 10.1016/j.reumae.2015.07.003 DO - 10.1016/j.reumae.2015.07.003 UR - https://www.reumatologiaclinica.org/en-adaptation-validation-spanish-version-graded-articulo-S2173574316000381 AB - ObjectiveTo adapt the Graded Chronic Pain Scale for use in primary care patients in Spain, and to assess its psychometric properties. MethodsClinical measures observational study investigating the severity of chronic pain. The methodology included a process of translation and back-translation following the international guidelines. Study participants were 75 patients who experienced lower back pain for more than six months and were sent to primary care physiotherapy units. Internal consistency, construct validity, test–retest reliability, floor and ceiling effects, and answering capacity were analyzed. ResultsThe Spanish version of the Graded Chronic Pain Scale had a high internal consistency, with a Cronbach's α of 0.87 and intraclass correlation coefficient of 0.81. Regarding construct validity, it was identified that two factors explained 72.37% of the variance. Convergent validity showed a moderate positive correlation with the Visual Analog Scale, the activity avoidance subscale of the Tampa Scale of Kinesophobia, the Pain Catastrophizing Scale, the Roland-Morris Low Back Pain and Disability Questionnaire, and the Fear Avoidance Beliefs Questionnaire. A moderate negative correlation was identified with the Chronic Pain Self-Efficacy Scale. The mean time of questionnaire administration was 2min and 28s. ConclusionsThe Spanish version of the Graded Chronic Pain Scale appears to be a valid, reliable, and useful tool for measuring chronic pain at an early stage in primary care settings in Spain. ER -