Table 5.

Performance of predictive model without BMD according to age

	Cutoff	Sensitivity	Specificity	AUC	PPV	NPV	LR +	LR-
Model 2 (without BMD)
Age < 65 + HHL > 1.5	3	41%	87%	0.64	28%	92%	3.15	0.68
Age > 65 + HHL > 1.5	7	51%	81%	0.66	52%	80%	2.65	0.61
Age 65–70 + HHL > 1.5	7	32%	81%	0.57	42%	74%	1.74	0.83
Age 71–75 + HHL > 1.5	7	51%	79%	0.65	62%	71%	2.43	0.62
Age 76–80 + HHL > 1.5	7	49%	73%	0.61	58%	65%	1.80	0.70
Age > 80 + HHL > 1.5	7	68%	79%	0.74	56%	78%	3.30	0.40

Cutoff value was calculated from sum of individual risk scores in Table 3 and according to original values reported for other models

AUC area under the curve, PPV positive predictive value, NPV negative predictive value, LR + positive likelihood ratio, LR- negative likelihood ratio