Table 2: Comparison of pre-treatment serum BChE levels in between stages of oral cancer patients.

Groups	Number	Pre-treatment serum BChE(U/I) Median (IQR)	* P value
Stage 2	8	5526.5(4031.8, 6863.5)	–
stage 3	10	6091(4990.8,7061.3)	0.477a
			0.005b
Stage 4	21	8115(6943, 9252)
			0.002c

^*Mann-Whitney Test

^aP value vs Stage 2- not significant

^bP value vs Stage 2- significant

^cP value vs Stage 3- significant

Bonneferoni correction for alpha error is used for multiple pair wise comparisons.

^IQRInterquartile Range