Table 4.

Outcome measures in patients with gallstone pancreatitis

Outcome measures	Before ASU (n=16)	After ASU (n=28)	p-value
Median time to operation in hrs	93.8 (IQR: 49.0–123.5)	52.1 (IQR: 30.0–82.2)	<0.001*
Median operating time in mins	95 (IQR: 65–125)	75 (IQR: 60–100)	0.003*
Median length of stay in days	6.5 (IQR: 5–9.5)	5 (IQR: 3–9)	0.007*
Time of operation			0.801**
8am – 6pm	16 (100.0%)	27 (96.4%)
6pm – midnight	0 (0%)	1 (3.6%)
Midnight – 8am		0 (0%)	0 (0%)
Conversion to open procedure	0 (0%)	0 (0%)	1.000**
Bile leak	0 (0%)	0 (0%)	1.000**
Bile duct injury	0 (0%)	0 (0%)	1.000**
Wound infection	0 (0%)	2 (7.1%)	0.601**

ASU = acute surgical unit; IQR = interquartile range

*Mann–Whitney U test; **Pearson’s chi-squared test