Temporomandibular Joint Bone Tissue Resorption in Patients with Early Rheumatoid Arthritis Can Be Predicted by Joint Crepitus and Plasma Glutamate Level

Table 1

Demographic and background data for 47 patients with early rheumatoid arthritis.

				Percentiles
			Median	25th	75th	Min	Max	Mean	SD	$n$	% abn
Gender		M/F								18/29
Age		years	62	53	67	25	79	58	14	47
Duration of general joint symptoms		months	7	4	10	2.3	38	8	6	47
Duration of RA diagnosis		days	23	12	36	3	115	27	20	47
Anti-cyclic citrullinated peptide		IU/mL	30	0	453	0	2000	349	557	37	51
Rheumatoid factor		IU/mL	23	0	173	0	910	130	221	47	51
C-reactive protein		Mg/L	0	0	18	0	96	13	22	47	43
Erythrocyte sedimentation rate		mm/h	22	17	32	6	85	28	18	47	49
Leukocyte particle count		${10}^9$/L	7.5	5.6	8.7	4.3	15	7.8	2.7	39	54
Thrombocyte particle count		${10}^9$/L	315	273	356	148	657	331	99	47	23
Disease activity score (DAS28)		0–10	6	5	6.5	4	7.8	6	1	44	100
Estradiol	total	pmol/L	62	34	82	15	1299	111	213	42
	males	pmol/L	65	62	85	48	140	77	25	17
	females	pmol/L	41	26	66	15	1299	133	275	25
Testosterone	total	nmol/L	1.2	0	10	0.0	22	5.0	6.1	42
	males	nmol/L	12	7.9	14	4.3	22	11	4.5	17
	females	nmol/L	0	0	0.9	0.0	3.5	0.6	0.8	25
Progesterone	total	nmol/L	0.4	0	1	0.0	2.1	0.6	0.6	42
	males	nmol/L	0.9	0.0	1.2	0.0	1.8	0.8	0.6	17
	females	nmol/L	0.0	0.0	0.7	0.0	2.1	0.4	0.6	25

$\%$ abn: percentage of observations with abnormal values when applicable, $n$: number of observations, M: males, F: tamales, IU: international units. The following values ware considered abnormal: Anti-cyclic citrullinated peptide $\ge$25 U/mL, rheumatoid tactor $\ge$20 IU, C- reaclive protein $\ge$3 mg/L, erythrocyte sedimentation rate $>$24 mm/h, leukocyte particle count $>8.8\times {10}^9/$L, and thrombocyte particle count $♂>348\times {10}^9/$L and $♀>387\times {10}^9/$L. The disease activity score for 28 joints (DAS28) was assessed at the time for diagnosis.