In multivariate analysis, the evidence of these clinical features was significantly associated with CRP ≥ 68.7 mg/L, pericarditis (OR 1.316, 95% CI 1.125–1.800, p = 0.015) and myalgia (OR 3.100, 95% CI 1.439–6.681, p = 0.004). This evidence concerns the gene CRP and pericarditis.