Table 1: KLK6 levels in the plasma of laryngeal SCC patients and controls.

CharacteristicsKLK6 levels (ng/mL) value
MedianInterquartile range

All individuals4.762.34
Diagnostic category
Anatomical region of cancer
Disease stage
 I + II5.443.600.375
 III + IV4.764.48
T stage
Lymph node status
Tumor differentiation

KLK6: kallikrein 6.
Comparisons of the plasma KLK6 levels between two independent sample cohorts were assessed by the Mann-Whitney test, and those among more than two independent cohorts were assessed by the Kruskal-Wallis test. *Benign versus health; cancer versus benign; cancer versus health.