Clinical Prediction Score for Ruptured Appendicitis in ED

Table 2

Predictors of ruptured appendicitis and the assigned item score in cases of suspected acute appendicitis.

Predictors	Category	aOR	95% CI	value	Coefficient^∗	Score
Age>60 years	No	1.00	Reference	—	—	0
	Yes	2.20	1.20–4.02	0.010	0.79	1
Fever>37.3°C	No	1.00	Reference	—	—	0
	Yes	2.28	1.26–4.12	0.006	0.82	1.5
Guarding	No	1.00	Reference	—	—	0
	Yes	3.78	2.16–6.62	<0.001	1.33	2
PMN>75%	No	1.00	Reference	—	—	0
	Yes	2.31	1.33–8.52	0.046	0.83	1.5
Duration of pain to ER
<12 hours		1.00	Reference	—	—	0
12–23 hours		0.58	0.10–3.37	0.542	0.54	1
>24 hours		6.60	2.28–19.16	0.001	1.89	3

Note. Coefficients from multivariable binary logistic regression. aOR, adjusted odds ratio; PMN, polymorphonuclear white blood cell.