.. _Anxiety and Depression:

Anxiety and Depression
=======================  

**Short Description:** Anxiety and depression are the most prevalent psychiatric disorders in Germany. The Patient-Health Questionnaire-4 (PHQ-4) is an ultra-short screening instrument that asks for the two core symptoms of both disorders during the previous two weeks. The PHQ-4 is a well-validated instrument with good reliability and criterion validity (Kohlmann et al., 2014).

**Reference:**
Kohlmann S, Gierk B, Löwe B (2014). PHQ-4. Patient Health Questionnaire-4. In C.J. Kemper, E. Brähler & M. Zenger (eds.), Psychologische und sozialwissenschaftliche Kurzskalen. Standardisierte Erhebungsinstrumente für Wissenschaft und Praxis. (S. 242-244). Berlin: Medizinisch Wissenschaftliche Verlagsgesellschaft.*

.. csv-table::
    :file: csv/Anxiety and Depression.csv
    :header-rows: 1