Appendix 3, Table A2. Minimum lifetime prevalence of provisional tic disorder assuming various prevalence rates for chronic tic disorders and the results of Snider et al ³¹.

True rate of TS+CTD	Minimum lifetime prevalence of Provisional Tic Disorder by 6th grade
1%	93%
2%	91%
3%	89%
4%	87%
5%	85%
6%	83%
7%	81%
8%	79%
9%	77%
10%	75%
11%	73%
12%	71%