• Margalida Gili, Natalia Bauzá, Margalida Vives, Sergio Moreno, Rosa Magallón, and Miquel Roca.
• Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Palma de Mallorca, España; Red de Investigación en Actividades Preventivas y Promoción de la Salud, Instituto de Salud Carlos III, Madrid, España. Electronic address: mgili@uib.es.
• Aten Primaria. 2015 May 1; 47 (5): 273278273-8.

ObjectiveTo study the diagnostic validity and to provide the sensitivity, specificity, positive predictive value and negative predictive value of the Spanish version of the Screening for Somatoform Symptoms-2 (SOMS-2) scale in a PC population sample.DesignValidation study.SettingPC centres in Aragon and Balearic Islands, Spain.ParticipantsA sample of 109 patients from a clinical trial with somatoform disorders and 56 patients without somatoform disorder were included for the scale validation.Main Outcome MeasuresSensitivity, specificity, positive predictive value, negative predictive value and Cronbach's α coefficient.ResultsOf the total sample of 165 subjects, 75% were women and 60% had a diagnosis of somatization disorder and/or anxiety or depressive disorder. The 53-item version of the SOMS-2 with a cut-off point of 4 showed a sensitivity of 97%, a specificity of 68%, a positive predictive value of 85%, a negative predictive value of 92%, and high internal consistency (Cronbach α=0.926).ConclusionsThe Spanish version of the SOMS-2 seems to be a reliable screening tool, easy to complete and useful for the assessment of somatoform disorders in PC settings. The results for specificity, sensitivity, and internal consistency are similar to previous studies in other European languages.Copyright © 2013 Elsevier España, S.L.U. All rights reserved.

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