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

Table 3.

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

Lumbar spine aBMD
Age, y	Black females								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	0.827	0.131	0.410	0.451	0.541	0.632	0.676	−0.459 + (HZ × 0.301)	0.612	0.126	0.386	0.420	0.498	0.581	0.621	−0.403 + (HZ × 0.082)
6	0.802	0.130	0.424	0.465	0.557	0.651	0.696	−0.319 + (HZ × 0.460)	0.612	0.126	0.407	0.444	0.526	0.613	0.656	−0.297 + (HZ × 0.214)
7	0.773	0.130	0.438	0.481	0.575	0.672	0.719	−0.096 + (HZ × 0.437)	0.612	0.126	0.428	0.467	0.553	0.645	0.690	−0.317 + (HZ × 0.267)
8	0.741	0.129	0.454	0.498	0.594	0.694	0.742	0.018 + (HZ × 0.449)	0.612	0.126	0.447	0.487	0.577	0.673	0.720	−0.251 + (HZ × 0.291)
9	0.696	0.128	0.477	0.521	0.620	0.725	0.775	−0.044 + (HZ × 0.422)	0.612	0.126	0.465	0.506	0.600	0.700	0.748	−0.123 + (HZ × 0.337)
10	0.625	0.127	0.514	0.561	0.665	0.776	0.830	−0.184 + (HZ × 0.441)	0.612	0.126	0.484	0.528	0.625	0.729	0.780	−0.147 + (HZ × 0.334)
11	0.526	0.124	0.573	0.623	0.736	0.858	0.918	−0.398 + (HZ × 0.661)	0.612	0.126	0.509	0.555	0.657	0.766	0.820	−0.232 + (HZ × 0.338)
12	0.409	0.122	0.648	0.702	0.825	0.960	1.027	−0.413 + (HZ × 0.775)	0.612	0.126	0.545	0.594	0.703	0.820	0.877	−0.277 + (HZ × 0.397)
13	0.295	0.119	0.718	0.775	0.906	1.052	1.126	−0.202 + (HZ × 0.744)	0.612	0.126	0.596	0.650	0.770	0.897	0.960	−0.416 + (HZ × 0.598)
14	0.198	0.117	0.775	0.834	0.971	1.126	1.205	−0.088 + (HZ × 0.674)	0.612	0.126	0.658	0.717	0.850	0.991	1.060	−0.313 + (HZ × 0.604)
15	0.124	0.116	0.817	0.877	1.019	1.179	1.262	−0.040 + (HZ × 0.618)	0.612	0.126	0.719	0.784	0.928	1.083	1.158	−0.179 + (HZ × 0.588)
16	0.072	0.115	0.847	0.908	1.052	1.218	1.303	−0.086 + (HZ × 0.643)	0.612	0.126	0.770	0.840	0.995	1.160	1.241	−0.048 + (HZ × 0.570)
17	0.037	0.114	0.867	0.929	1.075	1.243	1.331	−0.169 + (HZ × 0.669)	0.612	0.126	0.808	0.880	1.043	1.216	1.301	0.043 + (HZ × 0.562)
18	0.016	0.113	0.879	0.942	1.089	1.258	1.347	−0.149 + (HZ × 0.657)	0.612	0.126	0.831	0.906	1.073	1.251	1.339	0.102 + (HZ × 0.564)
19	0.005	0.113	0.886	0.948	1.096	1.267	1.356	−0.114 + (HZ × 0.631)	0.612	0.126	0.845	0.921	1.091	1.272	1.361	0.120 + (HZ × 0.584)
20	−0.003	0.113	0.891	0.953	1.101	1.273	1.362	−0.100 + (HZ × 0.724)	0.612	0.126	0.854	0.931	1.102	1.285	1.375	0.190 + (HZ × 0.604)

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.