(1993)[2] showed that severity ratings but not improvement ratings were predicted highly and significantly by frequency of panic attacks, depression and anxiety ratings made on already valid rating scales. Similarly, another study [3] showed that MADRS, HAM-D and CGI scales had comparable effect sizes and could be equally used in studies to assess severity and improvement of symptoms. Even though many studies have established the validity of CGI scales in relation to other commonly used robust rating scales, its efficacy in predicting treatment outcomes is highly debated.