Fracture risk assessment in children with benign bone lesions of long bones

Table 5 Diagnostic efficiency at different cutoff value

Score	Fracture	Non-fracture	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Accuracy	Fracture probability	Youden index
3	0	4	100%	7%	43%	100%	46%	0	0.07
4	0	4	100%	14%	45%	100%	50%	0	0.14
5	3	11	92%	34%	50%	86%	58%	0.08	0.31
6	3	15	85%	64%	60%	85%	71%	0.15	0.41
7	6	11	70%	80%	72%	79%	76%	0.3	0.5
8	12	8	40%	95%	84%	69%	72%	0.6	0.35
9	12	3	10%	100%	100%	61%	63%	0.9	0.1
10	4	0	0%	100%	0%	58%	58%	1	0