Table 4.

(online only). Quintiles of bone mineral density by site and age group among women in the Framingham Heart Study. Values represent the upper end of the quintile with greater values falling to the next quintile.

	Age Group
	67-69	70-74	75-79	80+
Femoral Neck
N	56	239	189	136
	0.498-	0.182-	0.475-	0.442-
Range	1.062	1.164	1.027	0.984
Q1	0.669	0.640	0.622	0.590
Q2	0.737	0.698	0.671	0.648
Q3	0.813	0.745	0.730	0.704
Q4	0.856	0.813	0.783	0.774
Q5	1.062	1.164	1.027	0.984
Trochanter
N	55	239	186	136
	0.423-	0.281-	0.352-	0.335-
Range	1.110	0.964	1.200	0.886
Q1	0.554	0.531	0.521	0.498
Q2	0.620	0.583	0.589	0.545
Q3	0.674	0.640	0.646	0.623
Q4	0.748	0.717	0.702	0.699
Q5	1.110	0.964	1.200	0.886
Radius
N	56	253	189	139
	0.392-	0.217-	0.297-	0.241-
Range	0.755	0.821	0.743	0.649
Q1	0.459	0.439	0.423	0.377
Q2	0.520	0.500	0.475	0.443
Q3	0.559	0.547	0.522	0.494
Q4	0.621	0.598	0.568	0.544
Q5	0.755	0.821	0.743	0.649