The CIWA calculator helps you assess the symptoms of alcohol withdrawal. What does CIWA stand for? It stands for Clinical Institute Withdrawal Assessment for Alcohol; however, our CIWA calculator uses a revised version (CIWA-Ar) – a shortened and improved scale created by the Centre for Addiction and Mental Health. This tool is the most commonly used scale in the clinical quantification of the severity of alcohol withdrawal. Read the article below to find out more about the CIWA protocol and alcohol withdrawal score.