TABLE 1.

Distribution of the analyzed variables in patients with rheumatoid arthritis and control group

	Rheumatoid arthritis	Control	P value	Odds ratio
N
Patients	48	48	-	-
Teeth	1026	1025
Mean age	47.69±10.6	47.19±10.7	0.82	-
Gender			-	-
Female	33	33	-	-
Male	15	15	-	-
Smoking habit
Present	13 (27.1%)	10 (20.8%)	0.321	1.655
Absent	35 (72.9%)	38 (79.2%)
Number of teeth with AP, n (%)			0.003	2.193
Present	45 (4.3%)	21 (2%)
Absent	981 (95.7%)	1004 (98%)
Patients with AP n (%)			0.027	3.087
Present	23 (47.9%)	14 (29.7%)
Absent	25 (52.1%)	34 (70.3%)
Patients with RCT, n (%)			0.538	0.733
Present	16 (33.3%)	20 (41.7%)
Absent	32 (66.7%)	38 (58.3%)
Patients with RCT+AP, n (%)			0.375	0.473
Present	5 (10.4%)	6 (12.5%)
Absent	43 (89.6%)	42 (87.5%)

Patients with AP, at least 1 tooth with apical periodontitis (Absent/Present); Patients with RCT, at least 1 root canal treated tooth (Absent/Present); Patients with RCT+AP, at least 1 root canal treated tooth with apical periodontitis (Absent/Present). Values in bold indicate statistical significance at P<0.05. AP: Apical periodontitis, RCT: Root canal treated teeth