Table 8.

Frontal Time-Frequency results: PMS only

Variable	Delta (µV2)	Theta (µV2)	Alpha (µV2)	Beta (µV2)	Gamma (µV2)	Beta-Gamma (ITC)	Alpha-Beta (ITC)	Delta-Theta (ITC)
Deletion Size	~−0.719	−0.699	−0.610		*−0.857
Stim						−0.003	*−0.038
Age	~−0.042	*−0.055	−0.016		*0.046	0.000	−0.000
Sex	*−2.563	*−2.660	*−3.649	***−6.044	*−2.979	~−0.015	*−0.050
Trials	~−0.057	−0.033	−0.051	−0.031	***−0.130	***0.002	***0.002	~ 0.001
System	~ 2.619	~ 3.575	*4.597	1.954	**3.519	0.022	~−0.072
DS*Stim							0.000
DS*Age	**−0.036	**−0.044	~−0.027
DS*System					0.874
Stim*Trials						~−0.001
Age*Sex						*−0.000
Age*System	−0.041				***−0.227		**0.002
Age*Trials						***0.000	0.000
Sex*System	2.976	2.217	1.821	4.152			*0.042
Sex*Trials						−0.000
System*Trials	0.041	0.038	0.080			**−0.002
Omnibus F	F(9, 32) = 9.67	F(8, 33) = 8.18	F(8, 33) = 5.53	F(4, 37) = 6.30	F(7, 34) = 7.79	F(10, 31) = 6.40	F(8, 33) = 5.85	F(1, 40) = 3.32
Model p-value	0.000	0.000	0.000	0.001	0.000	0.000	0.000	0.076
Mean	51.5	50.5	46.8	39.6	24.3	0.030	0.075	0.115
R 2	0.731	0.665	0.573	0.405	0.616	0.674	0.587	0.077

Note: Table of parameter estimates. Each column represents a group LASSO model of an EEG outcome variable. Parameter estimates less than 0.001 were shortened to 0.000 to save space. ~p <.10, *p <.05, **p <.01, ***p <.001. Variables with no symbol were retained by group LASSO but not significant in the final model. A non-significant model means that independent variables did not improve model fit over an intercept-only model. Only variables chosen by group LASSO are presented. Reference groups are as follows—Stimulus: Stimulus 1, Sex: Male, Group: TD, System: EGI. ITC, intertrial phase coherence; DS, deletion size; Stim, stimulus; PMS, Phelan McDermid Syndrome