Table 2.

NRI and IDI between the POST and the OSTA

Population	Index	Value	95%CI	p
Overall	IDI	0.0226	0.0147–0.0304	< 0.001
	NRI	0.1568	0.0856–0.2280	< 0.001
50–64 years	IDI	− 0.0035	– 0.0117–0.0047	0.404
	NRI	0.0752	– 0.0255–0.1758	0.143
65 and older	IDI	0.0516	0.0394–0.0637	< 0.001
	NRI	0.4049	0.3028–0.5070	< 0.001
Men	IDI	– 0.0018	– 0.0087–0.0050	0.604
	NRI	– 0.0559	– 0.2210–0.1091	0.506
Women	IDI	0.0071	0.0025–0.0117	0.002
	NRI	0.1028	0.0194–0.1861	0.016
Non-underweight patients	IDI	0.0273	0.0195–0.0350	< 0.001
	NRI	0.2156	0.1437–0.2876	< 0.001

Bold font indicates significance (Bonferroni correction for multiple comparisons in subgroup analyses, α = 0.0125 for 4 comparisons)

IDI: integrated discrimination improvement; NRI: net reclassification improvement; OSTA: Osteoporosis Self-Assessment Tool for Asians; POST: Primary Osteoporosis Screening Tool