Table 2 Univariate analysis of RA and RA-OP in the training set
Variables | RA (n = 226) | RA-OP (n = 124) | P |
|---|---|---|---|
Female (%) | 154 (68.1%) | 104 (83.9%) | 0.001 |
Age (years) | 62 (51, 69) | 68 (63, 71) | <0.001 |
RA duration (years) | 9 (4, 14) | 10 (4, 20) | 0.071 |
25 (OH)D (nmol/L) | 37.9 (26.3, 52.5) | 41.3 (30.0, 52.7) | 0.418 |
β-CTX (pg/mL) | 245 (180, 320) | 318 (248, 373) | <0.001 |
OC (ng/mL) | 14.3 (11.3, 19.2) | 11.0 (7.9, 17.2) | <0.001 |
PINP (ng/mL) | 44.6 (34.5, 57.1) | 37.5 (25.8, 52.6) | 0.001 |
ACPA (U/mL) | 164 (25, 373) | 388 (142, 1246) | <0.001 |
RF (IU/mL) | 69 (12, 312) | 71 (20, 220) | 0.796 |
ESR (mm/h) | 44 (24, 65) | 45 (29, 73) | 0.388 |
CRP (mg/L) | 8.46 (1.35, 26.30) | 10.75 (1.32, 27.73) | 0.322 |
TG (mmol/L) | 4.13 (3.55, 4.84) | 4.76 (4.36, 5.30) | <0.001 |
TC (mmol/L) | 1.06 (0.84, 1.47) | 1.02 (0.74, 1.43) | 0.171 |
HDL-C (mmol/L) | 1.12 (0.93, 1.42) | 1.27 (1.05, 1.56) | <0.001 |
LDL-C (mmol/L) | 2.54 (2.03, 3.15) | 2.79 (2.06, 3.50) | 0.072 |