In the multivariate logistic analysis, a low PWR, older age, male sex, abscess size, levels of albumin and ALP and infection with unidentified causative pathogens showed correlations with an adverse outcome (OR 1.738; 95% CI 1.211–2.507; p = 0.003, OR 1.447; 95% CI 1.007–2.082; p = 0.003, OR 1.477; 95% CI 1.028–2.082; p = 0.035, OR 1.114; 95% CI 1.045–1.189, p = 0.001, OR 0.689; 95% CI 0.490–0.964; p = 0.031, OR 1.001; 95% CI 1.000–1.002; p = 0.016, OR 0.569; 95% CI 0.332–0.971; p = 0.039, respectively). Here, ALB is linked to infection.