Table 3. Sensitivity and Specificity of the SIRS in Detecting Prolonged Length of Hospital Stay.

SIRS	Significant acute pancreatitis		Total	Sensitivity	Specificity	False positive
	Yes	No
1	19	151	170	0.83	0.42	0.58
2	14	52	66	0.61	0.80	0.20
3	3	13	16	0.13	0.95	0.05
4	2	0	2	0.09	1.00	0.00
Total	23	262

SIRS: systemic inflammatory responses syndrome.