Table 1. Patient Clinical Characteristics.

Characteristics	Total	Measurable enhancing lesion (+)	Measurable enhancing lesion (−)	P Value
No. of patients	59	27	32
Age (y)*	50.47±14.87	53.7±12.01	47.75±16.61	.117†
Karnofsky performance score – no. (%)				.588‡
<70	3 (5)	2 (7)	1 (3)
≧70	56 (95)	25 (93)	31 (97)
Surgery – no. (%)				1.000‡
Biopsy	2 (3)	1 (4)	1 (3)
Resection	57 (97)	26 (96)	31 (97)
Methylated MGMT promoter – no. (%)				.192‡
Negative	21 (36)	12 (44)	9 (29)
Positive	38 (64)	15 (56)	23 (71)

Note. – Unless otherwise indicated, data are given as the number of patients.

*Data are the mean±standard deviation.

^†Difference between the groups was evaluated with Student's t-test.

^‡Difference between the groups was evaluated with Fisher's exact or chi-square tests.