Table 4.

Multivariate analysis by logistic regression if perforated appendicitis occurred

Variable	Crude OR (95% CI)	Adjusted OR (95% CI)	P-value
Time duration from onset of symptoms to ED arrival >24 hours	2.6 (1.45–4.65)	2.49 (1.33–4.68)	0.004
Heart rates ≥90 beat/minute	2.04 (1.17–3.58)	1.93 (1.04–3.58)	0.035
Respiratory rates ≥20 breaths/minute	2.9 (1.57–5.34)	2.54 (1.33–4.84)	0.004
Presented with generalized guarding	16.46 (2.02–134.17)	12.58 (1.43–110.85)	0.004

Note: Values <0.05 are statistically significant.

Abbreviation: ED, emergency department.