CRP and juvenile polyposis syndrome: Factors identified for treatment failure included reinfection with the same pathogen for unplanned second DAIR (hazard ratio [HR] = 3.41; 95% confidence interval [CI] = 1.35–4.38; p = 0.004), higher reinfection rates in patients undergoing EA after an unplanned second DAIR, especially with a prior history of PJI within 2 years (HR = 4.23; 95% CI = 2.39–5.31; p = 0.002), pre‐first DAIR C‐reactive protein (CRP) levels over 100 mg/dL (HR = 2.52; 95% CI = 1.98–3.42; p = 0.003) and recurrence with the same pathogen (HR = 2.35; 95% CI = 1.32–4.24; p = 0.007).