Table 4.

Proportion of Women with Major Osteoporotic Fractures during 10-year Follow-up who are Identified for Bone Mineral Density Testing under the USPSTF and Canadian Strategies^*

Strategy	Age Group	Total n	Identified for screening, n (%)	MOF Events, n (%)	Sensitivity (95% CI)	Specificity (95% CI)	Positive Predictive Value (95% CI)
USPSTF	All Participants	115257	62546 (54%)	14105 (12%)	72.5 (71.8, 73.3)	48.3 (48.0, 48.6)	16.4 (16.1, 16.6)
	50–54	16420	727 (4%)	1032 (6%)	6.7 (5.2, 8.2)	95.7 (95.4, 96.0)	9.5 (7.4, 11.6)
	55–59	24523	3654 (15%)	1955 (8%)	21.7 (19.9, 23.5)	85.7 (85.2, 86.1)	11.6 (10.6, 12.6)
	60–64	27602	11453 (41%)	2731 (10%)	49.5 (47.6, 51.4)	59.4 (58.8, 60.0)	11.8 (11.2, 12.4)
	65–69	24997	24997 (100%)	3544 (14%)	100.0 (–)	0.0 (–)	14.2 (13.7, 14.6)
	70–74	15808	15808 (100%)	3111 (20%)	100.0 (–)	0.0 (–)	19.7 (19.1, 20.3)
	75–79	5907	5907 (100%)	1732 (29%)	100.0 (–)	0.0 (–)	29.3 (28.2, 30.5)
Canadian	All Participants	115257	82599 (72%)	14105 (12%)	82.9 (82.2, 83.5)	29.9 (29.6, 30.2)	14.1 (13.9, 14.4)
	50–54	16420	8391 (51%)	1032 (6%)	54.4 (51.3, 57.4)	49.1 (48.3, 49.9)	6.7 (6.2, 7.2)
	55–59	24523	12373 (50%)	1955 (8%)	55.4 (53.2, 57.6)	50.0 (49.3, 50.6)	8.8 (8.3, 9.3)
	60–64	27602	15123 (55%)	2731 (10%)	60.6 (58.8, 62.5)	45.9 (45.2, 46.5)	11.0 (10.5, 11.4)
	65–69	24997	24997 (100%)	3544 (14%)	100.0 (–)	0.0 (–)	14.2 (13.7, 14.6)
	70–74	15808	15808 (100%)	3111 (20%)	100.0 (–)	0.0 (–)	19.7 (19.1, 20.3)
	75–79	5907	5907 (100%)	1732 (29%)	100.0 (–)	0.0 (–)	29.3 (28.2, 30.5)

^*Major osteoporotic fractures (MOF) are defined as adjudicated hip fracture or self-report fracture of lower arm/wrist, spine/back, or upper arm/shoulder. USPSTF denotes United States Preventive Services Task Force