Subgroup | No of studies | OR | 95% CI | P value | I2 % | PH |
Group I vs group II | ||||||
Demographics | ||||||
Male | 5 | 1.51 | 1.18 to 1.94 | 0.001 | 0 | 0.80 |
BISAP≥3 | 4 | 2.71 | 1.04 to 7.06 | 0.04 | 80 | 0.002 |
Comorbidities | ||||||
Hypertension | 2 | 0.99 | 0.36 to 2.74 | 0.98 | 76 | 0.04 |
Diabetes | 2 | 1.23 | 0.72 to 2.09 | 0.45 | 0 | 0.80 |
Aetiology | ||||||
Alcohol | 4 | 0.28 | 0.11 to 0.72 | 0.009 | 65 | 0.04 |
Gallstone | 5 | 0.74 | 0.54 to 1.02 | 0.06 | 20 | 0.29 |
Unknown/idiopathic | 5 | 3.36 | 1.43 to 7.90 | 0.006 | 82 | 0.0002 |
Drug-induced | 3 | 1.57 | 0.49 to 5.03 | 0.45 | 0 | 0.93 |
Hyperlipidaemia | 4 | 0.92 | 0.31 to 2.76 | 0.88 | 46 | 0.14 |
Morbidities | ||||||
Pancreatic necrosis | 4 | 1.79 | 1.21 to 2.64 | 0.004 | 0 | 0.85 |
Thromboembolic complications | 2 | 1.30 | 0.48 to 3.53 | 0.60 | 0 | 0.43 |
Persistent organ failure | 2 | 7.37 | 3.48 to 15.60 | <0.00001 | 33 | 0.22 |
ICU admission | 3 | 3.91 | 2.53 to 6.05 | <0.00001 | 0 | 0.52 |
Mechanical ventilation | 2 | 7.52 | 3.23 to 17.49 | <0.00001 | 0 | 0.33 |
Mortality | 5 | 5.75 | 3.62 to 9.14 | <0.00001 | 0 | 0.66 |
Group I vs group III | ||||||
Male | 3 | 1.74 | 1.09 to 2.80 | 0.02 | 0 | 0.45 |
ICU admission | 2 | 3.80 | 0.95 to 15.18 | 0.06 | 77 | 0.04 |
Mortality | 4 | 2.76 | 1.17 to 6.54 | 0.02 | 61 | 0.05 |
BISAP, Bedside Index of Severity in Acute Pancreatitis; ICU, intensive care unit.