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Table 4 Bivariate correlation analyses of serum anti-citrullinated protein antibodies with clinical periodontal parameters

From: Antibodies against citrullinated proteins in relation to periodontitis with or without rheumatoid arthritis: a cross-sectional study

 

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

  1. 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)
  2. 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
  3. **Significant at p < 0.05