Table 2.

Bone mineral density means, standard deviations, and percentile values (5th–95th) for males and females across age categories.

Region	Gender	Age group	Sample size	Mean BMD	Std Dev	Percentile
						5th	10th	15th	25th	50th	75th	85th	90th	95th
Lumbar spine	Female	21–30	60	0.974	0.130	0.752	0.808	0.863	0.905	0.973	1.066	1.108	1.122	1.182
		31–40	254	0.980	0.119	0.772	0.826	0.854	0.905	0.979	1.067	1.096	1.132	1.174
		41–50	702	0.970	0.128	0.776	0.810	0.837	0.887	0.964	1.057	1.110	1.140	1.187
		51–60	2485	0.870	0.137	0.660	0.700	0.731	0.776	0.861	0.961	1.017	1.055	1.109
		61–70	2348	0.806	0.137	0.592	0.636	0.663	0.709	0.800	0.892	0.948	0.986	1.047
		71–80	1092	0.793	0.152	0.567	0.614	0.638	0.688	0.780	0.879	0.949	0.987	1.068
	Male	21–30	58	0.981	0.128	0.727	0.817	0.855	0.905	0.979	1.071	1.108	1.142	1.199
		31–40	215	0.997	0.130	0.798	0.832	0.862	0.902	0.997	1.085	1.118	1.160	1.240
		41–50	414	0.987	0.120	0.795	0.831	0.861	0.908	0.986	1.063	1.112	1.132	1.187
		51–60	1786	0.965	0.124	0.765	0.806	0.834	0.879	0.960	1.051	1.097	1.130	1.174
		61–70	1060	0.971	0.137	0.748	0.795	0.833	0.878	0.965	1.061	1.127	1.157	1.205
		71–80	472	0.959	0.152	0.712	0.769	0.802	0.853	0.946	1.060	1.120	1.174	1.228
Right Hip	Female	21–30	60	0.915	0.128	0.659	0.721	0.802	0.847	0.935	0.987	1.045	1.050	1.092
		31–40	254	0.919	0.118	0.724	0.778	0.801	0.851	0.917	1.004	1.043	1.072	1.111
		41–50	702	0.948	0.113	0.756	0.800	0.829	0.875	0.951	1.026	1.066	1.090	1.127
		51–60	2485	0.904	0.119	0.715	0.757	0.782	0.823	0.902	0.983	1.028	1.063	1.106
		61–70	2348	0.835	0.122	0.640	0.680	0.708	0.751	0.832	0.916	0.958	0.992	1.045
		71–80	1092	0.786	0.121	0.603	0.634	0.659	0.698	0.777	0.864	0.908	0.944	0.997
	Male	21–30	58	0.976	0.129	0.772	0.806	0.835	0.883	0.973	1.082	1.119	1.136	1.150
		31–40	215	0.976	0.128	0.754	0.792	0.830	0.882	0.989	1.059	1.110	1.138	1.178
		41–50	414	0.978	0.110	0.802	0.844	0.869	0.901	0.971	1.060	1.093	1.120	1.156
		51–60	1786	0.984	0.112	0.798	0.840	0.863	0.906	0.984	1.064	1.100	1.130	1.167
		61–70	1060	0.968	0.119	0.784	0.824	0.843	0.885	0.971	1.045	1.093	1.130	1.171
		71–80	472	0.942	0.130	0.744	0.774	0.800	0.846	0.937	1.043	1.081	1.108	1.150
Left Hip	Female	21-30	60	0.913	0.128	0.690	0.720	0.790	0.828	0.930	0.994	1.028	1.042	1.096
		31-40	254	0.917	0.116	0.715	0.780	0.809	0.838	0.916	0.986	1.044	1.063	1.098
		41-50	702	0.945	0.113	0.754	0.797	0.835	0.873	0.948	1.024	1.065	1.098	1.130
		51-60	2485	0.900	0.120	0.711	0.752	0.775	0.815	0.895	0.980	1.026	1.060	1.110
		61-70	2348	0.834	0.121	0.645	0.683	0.710	0.749	0.829	0.910	0.958	0.994	1.049
		71-80	1092	0.784	0.125	0.595	0.631	0.653	0.688	0.778	0.866	0.916	0.954	1.002
	Male	21-30	58	0.966	0.129	0.764	0.797	0.830	0.882	0.964	1.047	1.107	1.130	1.181
		31-40	215	0.978	0.129	0.748	0.791	0.825	0.894	0.988	1.065	1.109	1.144	1.188
		41-50	414	0.980	0.114	0.785	0.836	0.863	0.905	0.983	1.063	1.096	1.119	1.163
		51-60	1786	0.981	0.113	0.796	0.840	0.866	0.904	0.983	1.058	1.098	1.129	1.170
		61-70	1060	0.964	0.120	0.766	0.815	0.838	0.883	0.960	1.044	1.096	1.127	1.170
		71-80	472	0.935	0.127	0.739	0.769	0.801	0.843	0.930	1.033	1.077	1.104	1.141