Table 7. BMI-for-age SD curves (in kg/m²) for Chinese boys and girls, 0–18 years.

Age (Month)*	Boys								Girls
	L	M	S	−2SD	−1SD	Median	+1SD	+2SD	L	M	S	−2SD	−1SD	Median	+1SD	+2SD
0	−0.03	13.07	0.0837	11.06	12.02	13.07	14.21	15.45	−0.44	13.00	0.0878	10.98	11.93	13.00	14.22	15.61
1	0.72	14.91	0.0861	12.41	13.64	14.91	16.21	17.54	−0.31	14.52	0.0844	12.31	13.36	14.52	15.81	17.26
2	0.47	16.48	0.0860	13.77	15.10	16.48	17.93	19.44	−0.34	15.84	0.0848	13.43	14.57	15.84	17.27	18.87
3	0.25	17.48	0.0866	14.64	16.02	17.48	19.04	20.71	−0.37	16.69	0.0850	14.16	15.35	16.69	18.20	19.90
4	0.07	17.87	0.0874	14.99	16.37	17.87	19.50	21.27	−0.40	17.14	0.0848	14.55	15.77	17.14	18.69	20.43
5	−0.08	17.97	0.0878	15.10	16.47	17.97	19.63	21.45	−0.43	17.35	0.0843	14.74	15.97	17.35	18.90	20.66
6	−0.19	17.96	0.0875	15.12	16.47	17.96	19.62	21.47	−0.45	17.41	0.0835	14.82	16.04	17.41	18.96	20.71
8	−0.36	17.76	0.0856	15.04	16.32	17.76	19.37	21.19	−0.50	17.31	0.0818	14.79	15.98	17.31	18.82	20.53
10	−0.47	17.48	0.0833	14.89	16.11	17.48	19.03	20.79	−0.54	17.05	0.0802	14.62	15.77	17.05	18.51	20.17
12	−0.54	17.19	0.0814	14.71	15.87	17.19	18.68	20.38	−0.57	16.74	0.0790	14.39	15.50	16.74	18.15	19.76
15	−0.60	16.78	0.0797	14.41	15.52	16.78	18.20	19.83	−0.62	16.32	0.0779	14.06	15.12	16.32	17.67	19.22
18	−0.64	16.47	0.0787	14.18	15.26	16.47	17.86	19.45	−0.66	16.03	0.0775	13.83	14.86	16.03	17.36	18.88
21	−0.68	16.26	0.0779	14.03	15.08	16.26	17.62	19.18	−0.70	15.84	0.0773	13.68	14.69	15.84	17.15	18.66
24	−0.73	16.07	0.0770	13.88	14.91	16.07	17.39	18.92	−0.73	15.67	0.0772	13.54	14.54	15.67	16.97	18.46
30	−0.85	15.73	0.0754	13.64	14.62	15.73	17.00	18.48	−0.79	15.40	0.0769	13.32	14.30	15.40	16.68	18.15
36	−0.97	15.43	0.0746	13.43	14.36	15.43	16.68	18.14	−0.84	15.25	0.0771	13.19	14.15	15.25	16.52	17.99
36	−1.02	15.66	0.0745	13.63	14.57	15.66	16.92	18.41	−0.95	15.42	0.0773	13.35	14.31	15.42	16.70	18.22
42	−1.09	15.45	0.0752	13.44	14.37	15.45	16.71	18.21	−0.98	15.27	0.0782	13.20	14.16	15.27	16.56	18.10
48	−1.14	15.32	0.0767	13.30	14.23	15.32	16.60	18.13	−1.01	15.15	0.0801	13.06	14.03	15.15	16.47	18.05
54	−1.17	15.23	0.0790	13.18	14.12	15.23	16.55	18.14	−1.03	15.06	0.0826	12.93	13.92	15.06	16.42	18.05
60	−1.19	15.22	0.0823	13.10	14.07	15.22	16.60	18.28	−1.05	14.99	0.0854	12.81	13.82	14.99	16.40	18.10
66	−1.19	15.27	0.0866	13.05	14.06	15.27	16.73	18.54	−1.06	14.96	0.0884	12.72	13.75	14.96	16.42	18.20
72	−1.19	15.35	0.0916	13.00	14.07	15.35	16.91	18.87	−1.06	14.96	0.0915	12.66	13.71	14.96	16.47	18.34
78	−1.17	15.45	0.0971	12.97	14.09	15.45	17.13	19.26	−1.07	14.97	0.0949	12.60	13.68	14.97	16.55	18.51
84	−1.15	15.59	0.1027	12.97	14.15	15.59	17.40	19.72	−1.07	15.02	0.0984	12.56	13.67	15.02	16.66	18.73
90	−1.13	15.77	0.1084	12.99	14.24	15.77	17.70	20.22	−1.07	15.10	0.1022	12.55	13.70	15.10	16.82	19.01
96	−1.11	15.96	0.1140	13.03	14.34	15.96	18.03	20.76	−1.07	15.21	0.1062	12.56	13.76	15.21	17.03	19.36
102	−1.08	16.18	0.1192	13.09	14.47	16.18	18.39	21.32	−1.06	15.37	0.1103	12.61	13.85	15.37	17.29	19.77
108	−1.06	16.42	0.1240	13.18	14.62	16.42	18.76	21.90	−1.06	15.57	0.1142	12.69	13.98	15.57	17.59	20.23
114	−1.03	16.68	0.1283	13.28	14.79	16.68	19.14	22.48	−1.06	15.82	0.1180	12.81	14.15	15.82	17.94	20.75
120	−1.01	16.96	0.1321	13.42	14.98	16.96	19.54	23.06	−1.06	16.09	0.1215	12.97	14.36	16.09	18.33	21.31
126	−0.99	17.24	0.1353	13.57	15.19	17.24	19.94	23.62	−1.06	16.40	0.1245	13.15	14.59	16.40	18.75	21.90
132	−0.97	17.54	0.1379	13.73	15.41	17.54	20.33	24.17	−1.05	16.74	0.1270	13.36	14.86	16.74	19.18	22.49
138	−0.95	17.83	0.1401	13.91	15.63	17.83	20.72	24.70	−1.05	17.09	0.1290	13.60	15.14	17.09	19.63	23.09
144	−0.94	18.12	0.1419	14.09	15.86	18.12	21.09	25.20	−1.05	17.45	0.1305	13.85	15.44	17.45	20.08	23.67
150	−0.93	18.40	0.1433	14.27	16.08	18.40	21.45	25.67	−1.05	17.80	0.1317	14.11	15.74	17.80	20.51	24.23
156	−0.92	18.67	0.1443	14.45	16.30	18.67	21.80	26.11	−1.05	18.15	0.1325	14.37	16.03	18.15	20.93	24.76
162	−0.91	18.94	0.1451	14.64	16.52	18.94	22.12	26.52	−1.05	18.48	0.1331	14.61	16.31	18.48	21.33	25.24
168	−0.90	19.19	0.1457	14.81	16.74	19.19	22.43	26.90	−1.05	18.78	0.1334	14.84	16.58	18.78	21.69	25.69
174	−0.89	19.43	0.1461	14.99	16.94	19.43	22.73	27.25	−1.05	19.06	0.1336	15.06	16.82	19.06	22.01	26.08
180	−0.88	19.66	0.1463	15.16	17.14	19.66	23.00	27.58	−1.05	19.31	0.1337	15.25	17.04	19.31	22.30	26.42
186	−0.87	19.88	0.1464	15.32	17.32	19.88	23.26	27.89	−1.05	19.53	0.1337	15.42	17.23	19.53	22.55	26.72
192	−0.87	20.09	0.1465	15.48	17.50	20.09	23.50	28.17	−1.05	19.72	0.1337	15.58	17.40	19.72	22.77	26.98
198	−0.86	20.29	0.1465	15.63	17.68	20.29	23.73	28.44	−1.05	19.89	0.1336	15.71	17.55	19.89	22.97	27.21
204	−0.85	20.48	0.1464	15.77	17.84	20.48	23.95	28.69	−1.05	20.04	0.1335	15.84	17.69	20.04	23.14	27.41
210	−0.85	20.67	0.1464	15.91	18.00	20.67	24.16	28.93	−1.05	20.18	0.1334	15.95	17.81	20.18	23.30	27.59
216	−0.84	20.84	0.1463	16.04	18.16	20.84	24.36	29.16	−1.05	20.32	0.1333	16.06	17.93	20.32	23.45	27.77

Length based BMI-for-age 0–36 months and height based BMI 3–18 years. SD, Standard deviation.

^*Exact age not age groups.