Sensitivity and Specificity Gilliam Autism Rating Scale (GARS) in Diagnosis Autism Spectrum Disorders: systematic review

Autism spectrum disorder is a sort of disorder which has been vastly spreaded in recent years thus a set of expanded researches is carried out toward determining its different aspects. Sampling and Autism spectrum disorder diagnosis have always been of the basic needs in this scope. This study aims to investigate the efficiency of GARS globally.

Using the method of systematic review and the key words including Gilliam Autism Rating scale and Autism spectrum disorders screening tools in data sources such as googlescholar, scopus, springer, sciencedirect, magiran and SID in years 1995 to 2019, 135 essays have been written among which 52 were on psychometric properties of other diagnostic tools, 34 out of 83 considered as diagnosis tools, 32 were about the discoveries of the researches and17 were on the psychometric findings of GARS.

Results indicated that various editions of GARS have been translated into Jordanian, Korean, Chinese, Turkish, Spanish, Arabic and Persian languages among which the second edition has been greatly investigated, taking this point into attention that the third edition was published in 2014. Some findings in psychometric components including sensitivity (0/48 to 0/99) and Specificity (0/48 to 1) have been also investigated.

Results prove that GARS and its various versions have been used in a large number of researches; showing the significance. According to what mentioned above, investigation of GARS psychometric scale features which has been collected based on DSM, plays an important role for using the scale in diagnosis process.