'MRI-negative PET-positive' temporal lobe epilepsy (TLE) and mesial TLE differ with quantitative MRI and PET: a case control study

Table 4 Ratios of ipsilateral (epileptogenic) to contralateral volumes.

	HS+ve mean (SD)	p	HS-ve mean (SD)	p	Between groups
Frontal	1.01 (0.26)	0.19	1.00 (0.25)	0.82	p = 0.24
Temporal	0.98 (0.26)	0.09	1.01 (0.20)	0.60	p = 0.18
Parietal	0.99 (0.26)	0.63	1.04 (0.21)	0.016	p = 0.08
Occipital	0.97 (0.27)	0.32	0.99 (0.27)	0.67	p = 0.84
Insular	0.95 (0.11)	0.035	1.03 (0.22)	0.60	p = 0.039

Key Tables 4-7. The p-value quoted relates to side-to-side comparisons within individuals across the group. The between group comparison relates to comparison of the case to the age and sex matched control, performed across the group, rather than being a population comparison of ipsilateral to contralateral mean volumes.

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