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Table 2 Correlation between C4d, C3bBbP and sTCC in reference and patient groups

From: The complement system is activated in synovial fluid from subjects with knee injury and from patients with osteoarthritis

  Reference (n = 23) Osteoarthritis (n = 24) Rheumatoid arthritis (n = 32)
C4d C3bBbP C4d C3bBbP C4d C3bBbP
C3bBbP 0.428 (0.041) 0.080 (0.710) 0.536 (0.002)
sTCC 0.625 (0.001) 0.409 (0.053) 0.754 (<0.001) –0.298 (0.157) 0.752 (<0.001) 0.509 (0.003)
  Pyrophosphate arthritis (n = 25) Knee injury (n = 294)   
  C4d C3bBbP C4d C3bBbP   
C3bBbP –0.085 (0.685) 0.674 (<0.001)   
sTCC 0.496 (0.012) 0.345 (0.091) 0.643 (<0.001) 0.494 (<0.001)   
  1. sTCC Soluble terminal complement complex
  2. Correlation using Spearman’s rho (r s) between synovial fluid biomarkers of complement system analysed in different subject groups. Significant correlations (p < 0.05) are indicated by boldface type. The table shows r s with p values in brackets