Introduction: The INTERMED- interview (IM-CAG=INTERMED complexity assessment grid) is a well validated instrument for the identification of complex patients in need of integrated health care (score ≥21). The IM-SA (INTERMED self-assessment)-questionnaire, derived from the INTERMED- interview, was developed in cooperation with the international INTERMED group in order to facilitate its use in various clinical settings and to foster the patients' perspective on health-care needs.
Methods: The German version of the IM-SA was evaluated in a clinical sample (n=136) of psychosomatic outpatients and compared to the IM-CAG. Construct validity was examined by analyzing the correlations of the IM-SA with quality-of-life (SF-36) and anxiety/depression (HADS). Sensitivity and specificity for the identification of complex patients were examined by using ROC (Receiver Operating Characteristic) analysis.
Results: The correlations between the total score and the subscales of the IM-SA, compared to the INTERMED, were high (total score r=0.79 (95%-KI: [0.70; 0.85]). Cronbach's α was 0.77, and construct validity was high (SF-36 mental component score: r=-0.57; HADS Depression: r=0.59). The IM-SA total score was significantly lower compared to IM-CAG, mainly because of low IM-SA scores in the somatic domain. According to ROC analysis, the IM-SA-cut-off for identifying complex patients has to be lowered (score ≥17).
Discussion: The IM-SA can be used as an instrument to identify complex patients in need of integrated bio-psycho-social care.
Conclusion: The IM-SA is a reliable instrument to be used in various clinical settings to identify complex patients and to provide integrated, bio-psycho-social care.
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