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Psychosocial problems are highly prevalent among primary care (PC) patients, but they often remain undetected using traditional classification systems. The aim of the present study was to test the incremental validity of the revised version of the Diagnostic Criteria for Psychosomatic Research (DCPR-R), in addition to standard psychiatric assessment based on DSM-5, with regard to the prediction of psychosocial functioning of PC patients. Two-hundred PC patients were consecutively recruited. A comprehensive assessment was performed using two clinical interviews and three self-rating questionnaires (the PsychoSocial Index [PSI], the Short-Form Health Survey [SF-12] and the Illness Attitude Scales [IAS]) for the assessment of psychopathology and psychosocial functioning. Adding the DCPR-R to DSM-5, the amount of explained variance significantly increased by 9% to 16% in the PSI subscales, by 13% in the SF-12 mental component summary, and by 2% to 6% in the IAS scales. The joint use of DCPR-R and DSM-5 thus significantly increased the prediction of psychosocial functioning of primary care patients. These findings further support the use of the DCPR-R in PC settings, particularly in patients who do not satisfy DSM-5 criteria and yet present with high psychological distress, maladaptive illness behavior, impaired psychological well-being and quality of life., Competing Interests: Declaration of Competing Interest None, (Copyright © 2020 Elsevier B.V. All rights reserved.)

Background: A number of studies have documented psychosocial problems, psychiatric morbidity and impaired quality of life in primary care patients., Objective: The aim of this trial was to test the usefulness of the joint use of different diagnostic interviews and self-rated questionnaires., Methods: Two hundred consecutive patients in a primary care practice in Italy underwent the Structured Clinical Interview for DSM-5 and the Semi-Structured Interview for the Diagnostic Criteria for Psychosomatic Research (DCPR) in its recently revised form. As self-rated evaluations, the PsychoSocial Index, the Short-Form Health Survey and the Illness Attitude Scales were administered., Results: There were 46 patients (23%) with at least 1 DSM-5 diagnosis. Eighty-eight patients (44%) had at least 1 DCPR diagnosis, mainly maladaptive illness behavior (26.5%), allostatic overload (15.5%) and demoralization (15%). There were 47 (23.5%) patients who had a DCPR diagnosis only; 5 subjects (2.5%) had a DSM diagnosis only. Patients with DCPR syndromes displayed significantly higher self-rated levels of stress, psychological distress and maladaptive illness behavior and significantly lower levels of quality of life and well-being than patients with no diagnoses., Conclusions: In a busy clinical setting, a simple self-rated questionnaire such as the PsychoSocial Index may afford a useful tool to unveil patient current distress. The DCPR can provide clinical information for a substantial number of patients who do not satisfy DSM-5 classification criteria and yet present with psychosocial problems, as measured by self-rated scales. The DCPR may improve the assessment and treatment plan of primary care psychologists or consulting psychiatrists., (© 2019 S. Karger AG, Basel.)