Important risk factors and attributable risk of vertebral fractures in the population-based Tromsø study

Table 4 Determination of attributable risk (heuristic methods)

Age	BMD	N	Percent	RR	PAR
Women
<70	0.85+	781	49.7	1.0
	<0.85	296	18.8	1.72	7.4
70+	0.85+	227	14.4	2.01	7.9
	<0.85	267	17.0	4.33	30.6
All	All	1571	100		45.9
Men
<70	0.85+	692	59.3	1.0
	<0.85	49	4.2	1.79	2.2
70+	0.85+	357	30.6	2.00	20.4
	<0.85	69	5.9	3.75	10.8
All	All	1167	100		33.4

Remark: Approximately 46% of all vertebral fracture cases in women were attributable to old age and low BMD, with the latter - low BMD - (31%) having more pronounced effect than the former. In men, 33% of the fracture cases were attributable to old age and low BMD, with the former - old age - (20%) having more effect than the latter.

ISSN: 1471-2474