ApplicationIn order to recognize depression, self-rating scales may be useful among groups of patients at increased risk of depression. These scales are valuable for discovering patients, assessing treatment outcome and the course of depression. The scales they automatically evaluate are also independent of the patient's doctor, so the result is a more patient ligation than a clinical evaluation. If the self-positioning scale indicates that the patient suffers from depression, then the diagnostic rate must be confirmed by a doctor. The PHQ-9 self-positioning scale (Patient Health Questionnaire) is extracted from the DSM-IV criteria for depression. Previous studies have shown that PHQ-9s are valuable as instruments for detecting cases with a severity position that allows the healthcare provider to supervise the treatment outcome. These self-positioning scales are recommended for use in primary care. The Patient Health Questionnaire (PHQ) is designed to facilitate the recognition and diagnosis of depressive disorders in primary care patients. For patients with a depressive disorder, a PHQ Depression Severity Index score may be calculated and repeated when supervising the change. Primary care is most often patients' first contact with medical assistance. The elegant primary flow to serve as the premier platform for prevention, diagnosis, care, treatment and rehabilitation for all diseases in all age categories. This also includes depression, and patients with mild to moderate depression can most often be fully managed in primary care. The PHQ-9 is thus a dual-use instrument that, with the same...... middle of paper ......riates, and health care utilization on college campuses: Results of a national sample of university students. Department of Psychology, Eastern Michigan University. Kroenke K., Robert L. & Spitzer, MD. (2002). Phq -9: a new diagnosis and a new measure of the severity of depression. Annals of Psychiatry 3 2: 9. Kroenke, K., Spitzer, RL, Williams, JB (2001). The PHQ-9. Validity of a brief measure of depression severity. Journal of General Internal Medicine, 16, 606-613. Spitzer, R.L., Kroenke, K., & Williams, J.B.W. (1999). Validation and usefulness of a self-assessment version of PRIME-MD; The PHQ Primary Care Study. Journal of the American Medical Association, 282, 1737-1744. Martin, A., Rief, W., Klaiberg, A., Braehler, E. (2006). Validity of the Brief Patient Health Questionnaire (PHQ-9) mood scale in the general population. General Hospital Psychiatry, 28, 71-77.