Table 3. Results of univariate analysis identifying variables that differed significantly between the seizure-free and unfavorable outcome groups.

Quantitative variable	Seizure-free (n=61)	Unfavorable (n=29)	P-value
t-test
Age at onset (years)	35.07±11.44	38.34±10.07	0.191
Age at surgery (years)	36.56±10.63	39.34±10.20	0.272
Time from seizure onset to surgical treatment (years)	1.44±2.01	1.00±1.20	0.201
Rank sum test
Duration of seizures (sec)	179.70±160.63	268.28±271.86	0.289
Seizure frequency (n/month)	5.45±11.50	9.44±21.55	0.022

Quantitative results are expressed as the mean ± standard deviation.