Table-4.

Shows the comparison of Kallikrein 7 expression in different clinical stages of oral squamous cell carcinoma.

	Mean	SD	SE	Sum of ranks
TNM/clinical staging
Stage 1	1.20	0.92	0.29	105.00
Stage 2	1.37	1.28	0.45	109.50
Stage 3	2.29	1.25	0.47	124.50
Stage 4	3.60	0.89	0.40	126.00
H	10.8273
P	0.0127*
Pairwise comparisons by Mann–Whitney U-test
Stage 1 versus stage 2	P=1.0
Stage 1 versus stage 3	P=0.014*
Stage 1 versus stage 4	P=0.011*
Stage 2 versus stage 3	P=0.019*
Stage 2 versus stage 4	P=0.015*
Stage 3 versus stage 4	P=0.046*

Kruskal–Wallis ANOVA test. *P=0.0127 – Significant. SD: Standard deviation, SE: Standard error