Table:
Disorder	No. of clinically evaluated individuals	No. of cases confirmed by genetic testing	% of positive test (2011)	% of positive test (2007)	Trend from last survey
Williams Syndrome	610	149	24	3	++
DiGeorge/Velocardiofacial Syndrome	2260	736	33	3	++
Fragile X Syndrome	8240	353	4	4	=
Achondroplasia	186	84	45	36	+
Noonan Syndrome	968	267	28	NE
Angelman Syndrome	713	49	7	9	-
Prader-Willi Syndrome	927	78	8	18	- -
Ankylosing spondylitis	2826	418	15	NE
Celiac diseases	6748	3488	52	NE

Parse the following content of the table in markdown code: | Disorder | No. of clinically evaluated individuals | No. of cases confirmed by genetic testing | % of positive test (2011) | % of positive test (2007) | Trend from last survey | 
 | --- | --- | --- | --- | --- | --- | 
 | Williams Syndrome | 610 | 149 | 24 | 3 |

++ | 
 | DiGeorge/Velocardiofacial Syndrome | 2260 | 736 | 33 | 3 | ++ | 
 | Fragile X Syndrome | 8240 | 353 | 4 | 4 | = | 
 | Achondroplasia | 186 | 84 | 45 | 36 | + | 
 | Noonan Syndrome | 968 | 267 | 28 | NE |  | 
 | Angelman Syndrome | 713 | 49 | 7 | 9 | - | 
 | Prader-Willi Syndrome | 927 | 78 | 8 | 18 | - - | 
 | Ankylosing spondylitis | 2826 | 418 | 15 | NE |  | 
 | Celiac diseases | 6748 | 3488 | 52 | NE |  |