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Table 1:  Demographics information
Characteristics of Patients <1 cm 1–2 cm >2 cm P Value
Based on distance between lesion and SMC 
    No. of subjects (n = 74) 31 16 27 .09
    Male (%) 55 50 74 .20
    Handedness (% right)^a 74 93 76 .34
    Mean age ± SD (yr) 50 ± 17.0 43 ± 12.5 41 ± 15.5 .05
    Grade III or IV tumors (%) 71 50 43 .10
    Mean length of follow-up (mo)^b 40 35 49 .28
Based on distance of lesion from Broca or Wernicke area^c 
    No. of subjects (n = 77) 26 15 36 .01
    Male (%) 61 40 55 .74
    Handedness (% right) 81 73 78 .88
    Mean age ± SD (years) 44 ± 14.4 40 ± 18.6 49 ± 15.7 .12
    Grade III or IV tumors (%) 54 60 53 .89
    Mean length of follow-up (mo)^b 58 56 43 .26
a For the motor deficits study cohort, handedness was unknown for n = 5 subjects.
b The survival analysis patient cohort is slightly different from the cohort used in other parameter characterizations.
c Grouping was based on minimum distance from either Broca or Wernicke area.