In the multivariate analysis, a low PWR, abscess size, and levels of ALP and CRP showed correlations with prolonged hospitalization for more than 14 days (OR 1.573; 95% CI 1.053–2.357; p = 0.027, OR 1.094; 95% CI 1.011–1.186; p = 0.028, OR 1.002; 95% CI 1.0007–1.003, p = 0.002, OR 1.005; 95% CI 1.003–1.008; p < 0.001, respectively). Here, CRP is linked to abscess.