The PHQ-9 Depression Module is an Android application designed to screen for the presence and severity of depression in patients visiting primary care settings. Developed by Giuseppe Romano, the app is free to use and falls under the Lifestyle category with a subcategory of Medical.

The application is based on the 9-question depression scale from the Patient Health Questionnaire (PHQ). It takes less than 3 minutes for patients to complete the questionnaire, and the results can be used to diagnose depression according to DSM-IV criteria. The PHQ-9 is a widely used screening tool for depression, and this app makes it accessible to patients on their Android devices.

Overall, the PHQ-9 Depression Module is a quick and effective screening tool for depression. It provides a simple and easy-to-use interface for patients to complete the questionnaire and get results quickly. It is a useful tool for primary care providers who frequently screen for depression in their patients.