Table 2.

Area under the curve (95% CI) from ROC analysis for prevalent fracture by bone mineral density

	Lumbar spine		Femoral neck		Total hip
	BMD*	BMD + covariates†	BMD	BMD + covariates†	BMD	BMD + covariates†
US White	0.58(0.56–0.60)	0.59(0.57–0.61)	0.59(0.57–0.61)	0.60(0.58–0.62)	0.60(0.58–0.62)	0.61(0.59–0.63)
Tobago Afro-Caribbean	0.64(0.55–0.73)	0.67(0.58–0.76)	0.64(0.55–0.73)	0.65(0.55–0.74)	0.65(0.56–0.73)	0.66(0.57–0.75)
US African-American	0.59(0.49–0.69)	0.64(0.55–0.73)	0.50(0.40–0.60)	0.65(0.55–0.75)	0.51(0.41–0.62)	0.67(0.57–0.77)
US Hispanic	0.75(0.64–0.86)	0.78(0.68–0.88)	0.67(0.55–0.80)	0.69(0.56–0.81)	0.69(0.58–0.79)	0.74(0.63–0.84)
US Asian	0.59(0.45–0.72)	0.63(0.48–0.78)	0.58(0.46–0.70)	0.61(0.47–0.74)	0.61(0.48–0.74)	0.65(0.52–0.78)
Hong Kong Chinese	0.59(0.46–0.72)	0.58(0.52–0.64)	0.59(0.54–0.65)	0.60(0.54–0.66)	0.61(0.56–0.66)	0.62(0.56–0.67)
Korean	0.56(0.50–0.61)	0.59(0.55–0.63)	0.57(0.53–0.62)	0.59(0.55–0.63)	0.59(0.54–0.63)	0.60(0.56–0.64)

^*ROC curve based on the fitted logistic regression model including BMD and interaction term between ethnicity and BMD.

^†ROC curve based on the fitted multivariate logistic regression model including BMD, covariates (age, weight, height, history of smoking and current alcohol consumption) and interaction term between ethnicity and BMD.