Clinical Prediction Score for Ruptured Appendicitis in ED

Table 3

Probability categories in the RAMA WeRA Risk Score.

Probability categories	Score	Ruptured (+) (n = 77)		Nonruptured (−) (n = 403)		Sens	Spec	PPV	NPV	LHR+	95% CI	value
		n	%	n	%
Low	<2	0	0	45	11.17	—	88.8	—	82.3	0	—	<0.001
Moderate	2–6	31	40.26	296	73.45	40.3	26.6	9.5	70	0.55	0.41–0.72	<0.001
High	>6	46	59.74	62	15.38	59.7	84.6	38.9	91.7	3.88	2.90–5.21	<0.001