[Table/Fig-2]:

Comparison of incidence of occurence of prominent q wave in limb leads between three groups

Lead	Control (A)	2nd TM (B)	3rd TM (C)	Difference between groups
	n(%)	n(%)	n(%)	Chi square value X2	A-B	A-C	B-C
I	2 4%)	3 6	4 8	0.71 p>0.05 NS	NS	NS	NS
II	13 26	25 50	34 68	17.8 p<0.001 S	6.11 p<0.05 S	17.7 p<0.01 S	3.35 p>0.05 NS
III	20 40	27 54	33 66	12.1 p<0.05 S	1.97 p>0.05 NS	6.78 p<0.01 S	1.50 p>0.05 NS
avR	- -	- -	- -	- -	- -	- -	- -
avL	2 4	- -	3 6	2.89 p>0.05 NS	NS	NS	NS
avF	19 38	25 50	32 64	6.78 p<0.05 S	1.46 p>0.05 NS	6.76 p<0.01 S	1.99 p >0.05 NS