Table 2. Summary of genes and number of SNPs per test category.

Category	# genes	# SNPs	Highly ranked	Neuro-development	Mean p-value	SNPs with p<0.05		SNPs with p<0.005
						Obs.	Exp.	Obs.	Exp.
1	73	1271	Yes	Yes	0.521	42	63.6	4	6.4
2	42	1525	No	Yes	0.480	103	76.3	17	7.6
3	52	929	Yes	No	0.488	63	46.5	2	4.6
1+2	115	2796	-	Yes	0.498	145	139.8	21	14.0
1+3	125	2200	Yes	-	0.507	105	110.0	6	11.0
All	167	3725				208	186.3	23	18.6

Category 1: genes are both highly ranked and involved in neurodevelopment. Category 2: genes are exclusive to neurodevelopment. Category 3: genes are exclusively highly ranked (see details in Materials and Methods).