| RAPd (n = 20) | RA (n = 20) | Pd (n = 20) | HC (n = 20) |
---|
ACPA | r | p-value | r | p-value | r | p-value | r | p-value |
---|
VPI | 0.228 | 0.334 | 0.254 | 0.28 | 0.119 | 0.618 | 0.085 | 0.723 |
GBI | 0.052 | 0.828 |  − 0.030 | 0.90 | 0.045 | 0.850 |  − 0.058 | 0.808 |
PPD |  − 0.03 | 0.899 |  − 0.057 | 0.811 | 0.051 | 0.830 |  − 0.182 | 0.441 |
CAL PISA | 0.099 0.211 | 0.678 0.373 | 0.275 0.137 | 0.240 0.565 | 0.107  − 0.032 | 0.654 0.895 |  − 0.201  − 0.093 | 0.196 0.698 |
- Spearman rho correlation test; r-value: 0.5–1.0 (strong correlation); − 0.3 to 0.5 (moderate correlation); below 0.3 (weak to no correlation)
- RA, Rheumatoid arthritis; Pd, Periodontitis; RAPd, Subjects with RA and Pd; RA, Subjects with RA but without Pd; Pd, Subjects without RA but has Pd; HC, Subjects without both RA and Pd; ACPA, anti-citrullinated protein antibodies; VPI, visible plaque index; GBI, gingival bleeding index; PPD, probing pocket depth; CAL, clinical attachment level
- **Significant at p < 0.05