CRP and abscess: Univariate analysis showed that 16 variables—age, history of diabetes, history of tuberculosis, time elapsed to diagnosis, fever more than 38°C, WBC count ≤ 9,700/mm3, CRP level ≤ 50 mg/L, ESR ≤ 92 mm/h, neutrophil fraction ≤ 78%, thoracic involvement, non-lumbar vertebral involvement, number of involved vertebrae, paraspinal abscess, post-contrast well-defined margin enhancement, abscess wall thickness and anterior subligamentous involvement—had a p value < 0.1 and were considered in the multiple logistic regression.