Table 1.

L, M, and S parameters and percentiles for weight for age: boys 5 to 18 years.

Age (y)	L	M	S	3rd	5th	10th	25th	50th	75th	90th	95th	97th
5	−1.046774	16.65079	0.1550993	12.90855	13.28112	13.89993	15.07723	16.65079	18.60172	20.80742	22.40426	23.58309
6	−1.032594	18.64088	0.1685233	14.17041	14.60824	15.33896	16.74133	18.64088	21.03668	23.80084	25.83963	27.36547
7	−1.015487	20.66037	0.1819188	15.40283	15.90975	16.75961	18.4042	20.66037	23.55329	26.95761	29.51515	31.45556
8	−0.991157	23.2016	0.1951612	16.96528	17.558	18.55585	20.5014	23.2016	26.71622	30.92749	34.14503	36.61717
9	−0.9524795	26.06358	0.2080576	18.68911	19.38161	20.55156	22.84711	26.06358	30.30098	35.4506	39.43634	42.52811
10	−0.8979311	29.04166	0.2201021	20.42467	21.22672	22.58539	25.26373	29.04166	34.05786	40.20527	44.99669	48.73124
11	−0.8295125	32.4206	0.2305578	22.38467	23.31419	24.89148	28.00907	32.4206	38.29382	45.50162	51.1186	55.49237
12	−0.7531365	36.42373	0.2388563	24.73617	25.81763	27.65393	31.28576	36.42373	43.24885	51.58274	58.03479	63.02903
13	−0.678714	40.85276	0.2446715	27.37162	28.62171	30.74394	34.93716	40.85276	48.66688	58.12203	65.36768	70.92835
14	−0.6195751	45.73953	0.2479675	30.36456	31.79524	34.22245	39.01013	45.73953	54.57247	65.16076	73.1944	79.31055
15	−0.5869272	50.75983	0.2490815	33.55655	35.16184	37.88363	43.24485	50.75983	60.58089	72.28175	81.10396	87.78738
16	−0.5862568	55.13887	0.2485967	36.47562	38.21821	41.17227	46.98918	55.13887	65.78262	78.45399	88.00129	95.23035
17	−0.6082383	58.58773	0.2471192	38.90816	40.74362	43.85572	49.98706	58.58773	69.84454	83.28848	93.45201	101.1684
18	−0.6401284	61.25766	0.2451296	40.89868	42.79431	46.00937	52.34879	61.25766	72.95528	86.9922	97.65765	105.788