Table 5.

Predictive score of IE: overall cases

Score	Proportion of IE	PPV	NPV	Odds ratio
0	10 (4%)	0.04	0.93	baseline 1
1	30 (6.5%)	0.06	0.96	1.7
2	99 (18%)	0.2	0.93	5.4
3	113 (28%)	0.28	0.82	9.5
4	97 (44%)	0.44	0.72	19
5	43 (67%)	0.67	0.56	50
≥6	10 (83%)	0.83	0.32	123

PPV, positive predictive value; NPV, negative predictive value.

χ² for trend: P < 0.0000001.