Determination of surgical priorities in appendicitis based on the probability of undetected appendiceal perforation

Table 2 Multivariate analysis of factors affecting actual appendiceal perforation

	Hazard ratio	95%CI	P value
Body temperature (°C)			0.011
< 37.6 (standard)	1
≥ 37.6	1.912	1.161-3.149
Out-of-hospital delay (h)			0.006
< 72 (standard)	1
≥ 72	2.454	1.292-4.662
Age (yr)			< 0.001
< 35 (standard)	1
≥ 35	3.358	1.968-5.728
Appendiceal diameter on CT scan(mm)			0.045
< 8 (standard)	1
≥ 8	4.294	1.034-17.832

CT: Computed tomography.