The Hamilton Anxiety Rating Scale (HAM-A) and Generalized Anxiety Disorder (GAD) Scale is a widely used and well-validated tool for measuring the severity of anxiety.
Following are article describes the development and validation of Coronavirus Anxiety Scale
Article Coronavirus Anxiety Scale: A brief mental health screener fo...
The Hospital Anxiety And Depression Scale is a widely used tool in consultation psychiatry. It offers some advantages: it has a long tradition of use in patients with other disorders besides psychiatric disorder; this also allows comparison with co--morbid conditions; it also measures depressive symptoms
R Philip Snaith The Hospital Anxiety And Depression Scale. Health Qual Life Outcomes. 2003; 1: 29. Published online 2003 Aug 1. doi: 10.1186/1477-7525-1-29PMCID: PMC183845PMID: 12914662
COVID-19 Peritraumatic Distress Index (CPDI); described in Qiu J, Shen B, Zhao M,
et al. A nationwide survey of psychological distress among Chinese people in the COVID-19 epidemic: implications and policy recommendations. General Psychiatry 2020;33:e100213. doi:10.1136/gpsych-2020-100213