Table 6. Comparison of the clinical data of the two groups with different bacterial culture results.
| Characteristic | Positive bacterial culture group (n=64) | Negative bacterial culture group (n=92) | t/z/χ2 | P |
|---|---|---|---|---|
| Age (years), mean ± SD | 52.84±17.70 | 48.43±16.83 | 1.575 | 0.117 |
| Gender, n (%) | 0.118 | 0.747 | ||
| Male | 33 (51.56) | 50 (54.35) | ||
| Female | 31 (48.44) | 42 (45.65) | ||
| BMI (kg/m2), mean ± SD | 24.58±4.27 | 24.71±3.97 | −0.188 | 0.851 |
| Time from admission to onset (h), median [IQR] | 48 [24–90] | 48 [24–96] | −0.532 | 0.594 |
| Amylase (U/L), median [IQR] | 320 [115–1035] | 372 [168–861] | −0.288 | 0.773 |
| Leukocytes (×109/L), median [IQR] | 12.42 [7.66–16.35] | 11.05 [7.86–14.57] | −0.996 | 0.319 |
| APACHE II score, median [IQR] | 6 [4–9] | 5 [2–7] | −2.918 | 0.004 |
| Balthazar CT score ≥7*, n (%) | 11 (17.19) | 2 (2.17) | 11.181 | 0.001 |
| D-dimer (μg/L), median [IQR] | 2.7 [1.1–5.4] | 1.5 [0.7–2.6] | −2.747 | 0.006 |
| CRP (mg/L), median [IQR] | 122 [87–195] | 89 [18–123] | −3.543 | 0.001 |
| Neutrophils/lymphocytes, median [IQR] | 11.92 [6.81–19.79] | 8.56 [4.37–12.36] | −3.064 | 0.002 |
| Complications, n (%) | 38 (59.38) | 24 (26.09) | 14.539 | 0.001 |
| Systemic reaction | 29 (45.31) | 21 (22.83) | 8.763 | 0.005 |
| Local reaction | 22 (34.38) | 8 (8.70) | 16.945 | 0.001 |
| Heating duration (days), median [IQR] | 2 [1–7] | 1 [0.25–2] | −3.664 | 0.001 |
| Length of stay (days), median [IQR] | 8 [4–16] | 6 [5–8] | −1.975 | 0.05 |
| Pancreatic infection, n (%) | 19 (29.69) | 2 (2.17) | 24.526 | 0.001 |
*, a Balthazar CT score ≥7 indicated that the degree of pancreatic lesions is grade III and the severity of acute pancreatitis is severe. SD, standard deviation; BMI, body mass index; APACHE, acute physiology and chronic health evaluation; CT, computed tomography; CRP, C-reactive protein; IQR, interquartile range.