[Table/Fig-5]:

Intra-group comparison of P. gingivalis (CFU/ml).

Groups	N	Mean	SD	SEM	Minimum	Maximum	p-value
Group I A	15	3.43 CFU/ml	1.78	0.459	1.1	7.3	0.048
Group I B	15	2.49 CFU/ml	0.67	0.173	1.6	3.5

Paired t-test used for statistical analysis

* CFU/ml- Colony forming units per millilitre

† Group IA (RA patients just diagnosed)

‡ Group IB (RA patients under medication for more than three months