. 2011 Sep 15;96(10):3160–3169. doi: 10.1210/jc.2011-1111

Table 4.

Age- and sex-specific reference percentiles for lumbar spine aBMD for non-Black children

Lumbar spine aBMD
Age (yr)	Non-Black females								Non-Black males
	L	S	M					HZ prediction equation	L	S	M					HZ prediction equation
	L	S	3rd	10th	50th	90th	97th	HZ prediction equation	L	S	3rd	10th	50th	90th	97th	HZ prediction equation
5	−0.206	0.115	0.405	0.433	0.501	0.582	0.625	−0.385 + (HZ × 0.430)	0.436	0.121	0.380	0.412	0.483	0.562	0.601	−0.129 + (HZ × 0.396)
6	−0.178	0.117	0.417	0.447	0.518	0.604	0.649	−0.156 + (HZ × 0.427)	0.436	0.121	0.399	0.432	0.507	0.589	0.630	−0.077 + (HZ × 0.411)
7	−0.150	0.120	0.429	0.461	0.536	0.626	0.674	−0.007 + (HZ × 0.473)	0.436	0.121	0.417	0.451	0.530	0.616	0.658	−0.057 + (HZ × 0.455)
8	−0.120	0.122	0.442	0.475	0.555	0.650	0.701	0.041 + (HZ × 0.522)	0.436	0.121	0.434	0.470	0.552	0.641	0.685	−0.037 + (HZ × 0.469)
9	−0.080	0.126	0.457	0.493	0.578	0.680	0.734	0.034 + (HZ × 0.501)	0.436	0.121	0.450	0.488	0.572	0.665	0.711	−0.005 + (HZ × 0.510)
10	−0.022	0.131	0.479	0.518	0.612	0.725	0.785	−0.035 + (HZ × 0.485)	0.436	0.121	0.467	0.506	0.594	0.690	0.737	−0.005 + (HZ × 0.507)
11	0.061	0.139	0.510	0.555	0.664	0.792	0.861	−0.104 + (HZ × 0.542)	0.436	0.121	0.487	0.527	0.619	0.719	0.769	−0.039 + (HZ × 0.524)
12	0.169	0.145	0.560	0.613	0.740	0.888	0.966	−0.053 + (HZ × 0.593)	0.436	0.121	0.516	0.558	0.655	0.761	0.814	−0.100 + (HZ × 0.590)
13	0.286	0.140	0.631	0.690	0.829	0.988	1.069	−0.011 + (HZ × 0.592)	0.436	0.121	0.559	0.605	0.710	0.825	0.882	−0.151 + (HZ × 0.690)
14	0.392	0.128	0.703	0.764	0.904	1.059	1.137	−0.027 + (HZ × 0.539)	0.436	0.121	0.619	0.670	0.787	0.914	0.978	−0.099 + (HZ × 0.747)
15	0.473	0.116	0.757	0.817	0.954	1.101	1.174	−0.036 + (HZ × 0.553)	0.436	0.121	0.687	0.744	0.873	1.014	1.084	−0.071 + (HZ × 0.707)
16	0.527	0.108	0.794	0.853	0.984	1.125	1.195	−0.038 + (HZ × 0.595)	0.436	0.121	0.743	0.804	0.944	1.096	1.172	−0.032 + (HZ × 0.598)
17	0.560	0.103	0.817	0.874	1.003	1.140	1.206	−0.080 + (HZ × 0.589)	0.436	0.121	0.781	0.846	0.993	1.153	1.233	0.022 + (HZ × 0.565)
18	0.579	0.100	0.830	0.887	1.014	1.148	1.213	−0.080 + (HZ × 0.574)	0.436	0.121	0.805	0.872	1.023	1.189	1.271	−0.011 + (HZ × 0.601)
19	0.590	0.099	0.838	0.895	1.020	1.152	1.216	−0.083 + (HZ × 0.515)	0.436	0.121	0.821	0.889	1.043	1.212	1.296	−0.044 + (HZ × 0.617)
20	0.598	0.097	0.844	0.900	1.024	1.155	1.219	−0.091 + (HZ × 0.451)	0.436	0.121	0.833	0.902	1.059	1.230	1.316	−0.071 + (HZ × 0.587)

L, M, and S values to calculate Z-scores and HZ prediction equations to calculate height adjusted Z-scores are also shown. HZ, Ht-Z.