Differences in the prevalence of overweight/obesity among children and adolescents in the 30 mainland provinces of China in 1985, 1995, 2000, and 2005. Data were stratified by sex and year. Data were derived from 4 waves of the Chinese National Survey on Student’s Constitution and Health (5). Areas with no color were not included in the survey. Overweight/obesity was defined as body mass index ≥85th percentile (6).

Province	1985		1995		2000		2005
	Boys	Girls	Boys	Girls	Boys	Girls	Boys	Girls
Anhui	0.59	1.32	1.67	2.00	5.31	4.00	6.42	4.62
Beijing	2.92	2.99	8.18	6.96	13.0	8.61	16.41	10.09
Chongqing	Not available	Not available	Not available	Not available	Not available	Not available	7.12	4.63
Fujian	0.33	0.65	6.28	4.14	10.39	5.06	10.61	5.40
Inner Mongolia	0.60	2.08	3.47	2.85	6.78	4.88	9.97	7.06
Gansu	0.53	1.32	2.44	2.66	5.32	3.8	7.71	4.97
Guangdong	0.26	0.48	1.81	2.11	3.86	3.31	5.58	3.15
Guangxi	0.22	0.67	1.71	1.32	6.14	3.58	6.39	4.46
Guizhou	0.60	2.06	2.36	3.94	2.92	2.53	4.41	3.87
Hainan	Not available	Not available	1.76	1.32	5.41	2.95	7.05	4.25
Hebei	1.17	2.13	7.36	5.03	12.50	8.32	12.45	9.03
Heilongjiang	0.74	1.63	5.28	3.92	9.06	5.78	14.74	8.40
Henan	0.64	1.28	4.17	3.43	8.02	5.62	11.25	7.72
Hubei	0.63	1.41	3.72	2.03	3.81	2.53	7.54	5.14
Hunan	0.40	1.10	3.29	2.94	6.28	3.31	9.05	4.12
Jiangsu	1.10	1.88	4.45	3.52	10.18	5.67	13.95	8.51
Jiangxi	0.42	1.16	2.48	1.98	5.28	3.01	7.74	4.88
Jilin	0.77	1.18	4.57	3.39	6.79	6.57	9.86	7.27
Liaoning	1.12	1.66	6.67	5.03	9.68	6.40	12.89	8.72
Ningxia	0.31	1.42	2.47	2.28	3.14	3.72	7.93	5.80
Qinghai	0.23	0.78	Not available	Not available	2.83	1.81	4.43	2.74
Shaanxi	0.35	1.01	3.23	2.84	5.69	3.83	7.22	4.28
Shandong	1.91	2.10	7.53	4.89	12.99	7.87	14.29	8.86
Shanghai	1.66	1.54	8.70	5.48	11.3	6.47	14.63	8.09
Shanxi	0.83	1.67	4.45	3.65	8.28	5.25	9.9	6.59
Sichuan	0.35	1.58	2.27	2.64	4.47	2.98	6.64	4.25
Tianjin	1.69	2.21	10.43	7.36	7.41	7.91	15.68	10.03
Xinjiang	0.48	1.05	1.94	1.83	7.40	2.92	8.89	4.52
Yunnan	0.59	1.50	2.79	1.83	6.16	4.57	6.66	3.63
Zhejiang	0.33	0.78	4.96	3.11	8.56	5.39	12.04	6.79