Table I.

No of publications in the group of controls, benign and malignant persons, no of samples and STK1p mean values in the various groups included in the present study.

Variables	Control	Benign	Malignant
Publications (n)	19	10	20
Samples (n)	1,701	774	1,836
STK1p (mean ± SD)	0.88±0.50	1.30±0.84	3.14±2.55
P-value	0.00078a	<0.0001b	<0.0001c

P-values corresponding to the comparison of STK1p values between groups.

^aControl vs. benigh group,

^bbenigh vs. malignant group and

^cmalignant vs. control group. SD, standard deviation; STK1p serum thymidine kinase 1.