Table 4.

Mean change in recession depth in Group I and Group II and their comparison at different time intervals

Time interval	Group	Mean change±SD	P	S	Mean difference	P	S
Baseline to 3 months	I	2.37±0.56	0.0001	S	0.79	0.12	NS
	II	1.58±0.51	0.0001	S
Baseline to 6 months	I	2.91±0.84	0.0001	S	0.87	0.06	NS
	II	2.04±0.49	0.0001	S
3 months to 6 months	I	0.54±0.62	0.01	S	0.08	0.11	NS
	II	0.46±0.45	0.01	S

S: Significant, NS: Nonsignificant, SD: Standard deviation