Tourette Syndrome Diagnostic Confidence Index was published in Neurology 1999;53:2108. It's used to identify Tourette in an life-perspective and gives a score proportional to severety.
The following represents the results of a comparison between Tourette Syndrome Diagnostic Confidence Index and Aspie-quiz that was done in stable version 11 of Aspie-quiz.
Total population: 100
Tourette - Aspie score correlation: .46
Tourette - NT score correlation: -.43
Tourette - score diff correlation: .45