Table 4

Risk reclassification table comparing Model 1 (standard fracture risk factors alone) to Model 3 (standard fracture risk factors with continuous BMD measurement), using a clinical 8.5% risk cut-off

			Model 3: SRF with continuous BMD		Total	Total no.(%) reclassified
			<8.5%	≥8.5%	Total	Total no.(%) reclassified
Model 1: SRF without BMD	<8.5%	No.	391	227	618	227 (36.7)
		%	63.3	36.7
		No. of events	5	9
		No. of non-events	386	218
		Observed event rate	1.3%	4.0%
	≥8.5%	No.	302	1040	1342	302 (22.5)
		%	22.5	77.5
		No. of events	10	121
		No. of non-events	292	919
		Observed event rate	3.3	11.6
	Total		693	1267	1960	529 (27.0)

BMD, bone mineral density; SRF, standard risk factors.