Assessing psychopathology in bariatric surgery candidates: discriminant validity of the SCL-90-R and SCL-K-9 in a large
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ORIGINAL ARTICLE
Assessing psychopathology in bariatric surgery candidates: discriminant validity of the SCL‑90‑R and SCL‑K‑9 in a large sample of patients Emanuela Bianciardi1 · Paolo Gentileschi2 · Cinzia Niolu1 · Marco Innamorati3 · Mariantonietta Fabbricatore3 · Lorenzo Maria Contini1 · Leonardo Procenesi1 · Alberto Siracusano1 · Claudio Imperatori3 Received: 8 August 2020 / Accepted: 29 October 2020 © The Author(s) 2020
Abstract Purpose Pre-surgical psychosocial evaluation of bariatric surgery (BS) patients should identify psychiatric issues that could worsen after surgery and those requiring additional ongoing intervention. In this view, the use of reliable, appropriate and concise evaluating instruments is of critical importance. The aim of the present study was to investigate the clinical utility of both the Symptom Checklist 90-Revised (SCL-90-R) and its brief unidimensional version, the so-called Symptom-ChecklistK-9 (SCL-K-9) in detecting the presence of psychiatric disorders among bariatric surgery (BS) candidates. Methods Seven-hundred-and-ninety-eight BS candidates (563 women and 235 men; mean age: 44.15 ± 11.45) were enrolled in the present study. All participants underwent a full psychiatric interview and were administered the SCL-90-R. Results Three-hundred-and-sixty-two patients (45.4%) met the criteria for a diagnosis of at least one psychiatric disorder and ninety-nine patients (12.4%) had psychiatric comorbidities. In the current sample, 219 patients (27.4%) met the criteria for binge eating disorders (BED), 158 (19.8%) met the criteria for major depressive disorder (MDD), and 67 (8.4%) met both criteria. A receiver operating characteristic (ROC) curves procedure showed that both the SCL-90-R and the SCL-K-9 satisfactorily categorize patients with any psychiatric disorder, both BED and MDD (area under the ROC curve ≥ 0.70, p
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