Table 2.
Clinical baseline characteristics of subjects
| Characteristics | Control (N = 36) | OA (N = 36) | RA (N = 80) | P a | P b | P c |
|---|---|---|---|---|---|---|
| Age, years | 45.67±6.78 | 48.54±7.56 | 46.17±7.12 | 0.094 | 0.723 | 0.107 |
| Gender (male/female) | 11/25 | 9/27 | 17/63 | 0.793 | 0.349 | 0.639 |
| Height, cm | 158±6.16 | 159±6.27 | 160±5.92 | 0.497 | 0.099 | 0.410 |
| Weight, kg | 56.7±8.81 | 58.4±8.02 | 59.6 ±9.43 | 0.395 | 0.121 | 0.509 |
| Disease duration, years | / | 7.03±0.71 | 6.92±0.58 | / | / | 0.381 |
| CRP, g/L | 3.17±0.91 | 10.24±2.06 | 28.34±7.82 | <0.001 | <0.001 | <0.001 |
| RF, RU/L | 6.83±2.77 | 23.04±11.26 | 61.92±23.64 | <0.001 | <0.001 | <0.001 |
| ESR, mm/h | 10.41±2.83 | 12.82±3.24 | 38.16±15.67 | 0.0013 | <0.001 | <0.001 |
| Anti-CCP, U/mL | 7.74±1.19 | 8.12±1.26 | 78.47±13.51 | 0.193 | <0.001 | <0.001 |
| DAS28 | / | / | 4.67±1.52 | / | / | / |
OA, osteoarthritis; RA, rheumatoid arthritis; CRP, C-reactive protein; RF, rheumatoid factor; ESR, erythrocyte sedimentation rate; anti-CCP, anti-cyclic citrullinated peptide; DAS28, disease activity score of 28 joints.
Measurement data were expressed as mean ± SD.
The unpaired t test was used for comparisons between two groups, one-way ANOVA was used for comparisons among multiple groups, and Tukey’s multiple comparisons test was used for post hoc analysis.
Measurement data were expressed as the number of cases, and Fisher’s exact test was used for comparatives between groups.
P a, OA group compared with control group; Pb, RA group compared with control group; Pc, OA group compared with RA group.