Table 2.

Univariate correlations between clinical seizure variables, GIQ, VIQ and PIQ. For age at seizure onset, a logarithmic correlation was used based on the scatter plots (see Figure 1).

Clinical predictors	Correlations	Whole group (N=34)			Left SWS (N=20)			Right SWS (N=14)
		GIQ	VIQ	PIQ	GIQ	VIQ	PIQ	GIQ	VIQ	PIQ
Age at seizure onset	r (log)	0.51	0.37	0.62	0.41	0.19	0.67	0.61	0.6	0.49
	p	0.002	0.03	0.0001	0.074	0.42	0.001	0.02	0.023	0.075
Seizure frequency	r (linear)	−0.35	−0.45	−0.23	−0.33	−0.48	−0.21	−0.33	−0.30	−0.13
	p	0.040	0.007	0.19	0.16	0.033	0.39	0.235	0.30	0.67
Duration of epilepsy	r (linear)	− 0.55	−0.50	−0.49	0.56	−0.50	−0.52	−0.27	− 0.27	−0.15
	p	0.001	0.003	0.004	0.011	0.025	0.02	0.34	0.35	0.61

Blue: 0.01<p<0.05; red: p<0.01