An abridged and translated 14 question version was then developed at the Department of Clinical Neuroscience at the Karolinska Institute, to aid in the identification of patients who may have undiagnosed ASD.
The RAADS-R, revised in 2011 after the original in 2008,[7] has 80 questions organised into four domains: social relatedness, circumscribed interests, language, and sensory-motor symptoms.
The RAADS-R test is available online in English and Swedish and has been translated into various languages for the purpose of assessing its accuracy in identifying ASD,[8] in addition to its performance in comparison to other popular diagnostic tools.
[9] When translated for participants in the Netherlands, the RAADS-R correctly identified ASD in 80% of cases, with high sensitivity as opposed to another popular measure, the AQ.
One advantage that the RAADS-R has in comparison to other commonly used autism screening tests is that it has specific questions that target hyposensitivity and hypersensitivity,[9] which correlates with diagnostic criteria in the DSM-5.
The RAADS-R is also recommended by the National Institute for Health and Care Excellence, or NICE,[11] which operates within the UK in order to provide nationwide healthcare guidelines.
[15] This case study revealed another use for the RAADS-R in identifying possible comorbidities, and the repeated likelihood of missed diagnosis in adulthood that can be unearthed using the test, despite frequent symptom overlap.