[Table/Fig-4]:

Comparison of means on percentage of plaque index

groups	number	mean	DS*	Deviation of the mean	F	p-value	t	df	p-value
control	52	69.17	5.74	0.79	40.30	0.000	1.90	78.39	0.06
case	52	72.36	10.63	1.47
female (case)	24	73.59	9.85	2.01	2.12	0.15	0.77	50	0.44
Male (case)	28	71.301	11.32	2.14
female (control)	31	68.74	5.701	1.02	0.406	0.52	0.64	50	0.52
Male (control)	21	69.79	5.88	1.28

*Deviation Standard