表2.

病程≤3月和病程≤6月关节炎患者临床资料比较

Clinical charasteristics of patients with arthritis whose disease duration ≤3 months and ≤6 months

Items	Disease duration≤3 months(n=129)	Disease duration≤6 months(n=220)	P
Abbreviations as in Table 1.
Male/female, n	43/86	74/146	0.954
Age/years, x±s	47.09±15.89	49.80±14.16	0.345
Swollen joint count, median (IQR)	4(1, 8)	4(1, 9)	0.688
Tender joint count, median (IQR)	7(3, 14)	8(4, 18)	0.063
Morning stiffness(＞30 min), n(%)	66(51.16)	115(52.27)	0.841
RF positive, n(%)	56(43.41)	115(52.27)	0.110
anti-CCP positive，n(%)	62(48.06)	125(56.82)	0.113
ESR, mm/h, median (IQR)	39.00(20.75, 58.00)	40.00(22.00, 58.25)	0.758
CRP, mg/L, median (IQR)	13.26(3.04, 44.79)	11.60(4.17, 42.40)	0.839