Table 1.

Patient demographic data.

Characteristics	Normal (n = 20)	Cancer (n = 145)	P value
Age (mean ± SD, year)	67 ± 10	66 ± 14	0.907a
Gender
Male	9	65	0.998b
Female	11	80
Lesion sites
Left	10	58	0.394b
Right	10	87

^aOne-way ANOVA test; ^bChi-square test.