Fig. 1
From: Reduced induction of anti-PF4/heparin antibody in RA patients after total knee arthroplasty
Preoperative (before) and POD 10 (after) OD levels and seroconversion rates of anti-PF4/heparin antibodies in RA patients with or without anti-CCP Ab and in OA patients. Wilcoxon signed rank test was used for the comparison of a pair of samples. One RA patient who tested positive before surgery (dots in parentheses) did not meet the definition of seroconversion and was excluded from the analysis. CCP citrullinated peptide, ELISA enzyme-linked immunosorbent assay, OA osteoarthritis, OD optical density, RA rheumatoid arthritis