Establishing baseline absolute risk of subsequent fracture among adults presenting to hospital with a minimal-trauma-fracture

Table 2 Risk of subsequent fracture based on sex, age, and site of initial fracture

	Subsequent fracture(n)	Total (N)	Rate (%)	Rate Ratio (95% CI)		p-value ^a
	Subsequent fracture(n)	Total (N)	Rate (%)	Crude	Adjusted	p-value ^a
Sex
Men	425	3939	10.79	1.0 (ref)	1.0 (ref)
Women	1599	11,149	14.34	1.33 (1.19, 1.48)	1.31 (1.17, 1.46)	< 0.001
Age group (yr)
50–59	202	1663	12.15	1.0 (ref)	1.0 (ref)
60–69	327	2704	12.09	1.00 (0.84, 1.19)	1.01 (0.85, 1.20)
70–79	544	3654	14.89	1.23 (1.04, 1.44)	1.28 (1.08, 1.50)
80+	951	7067	13.46	1.11 (0.95, 1.29)	1.20 (1.00, 1.49)	0.005^b
Site of initial fracture
Hip	545	4,738,313	11.50	1.0 (ref)	1.0 (ref)
Lumbar spine	55	360	15.28	1.33 (1.01, 1.75)	1.36 (1.03, 1.79)	0.031
Major	737	5,212,638	14.14	1.23 (1.11, 1.37)	1.20 (1.05, 1.38)	< 0.001
Minor	687	4778	14.38	1.25 (1.12, 1.40)	1.30 (1.15, 1.47)	< 0.001

Note: ^a adjusted p-value based on Wald’s test
^b adjusted p-value for trend, 95% CI = 95% confidence interval
Fractures were classified as follows: hip, vertebral, major, and minor fractures. Major fractures included pelvis, distal femur, proximal tibia, ribs and sternum, and proximal humerus. Minor fractures included all remaining fractures, excluding those of the face, head or digits

ISSN: 1471-2474