Table 1.

Selected Sample Characteristics (Mean (SE) or %) for First and Last Survey Year by Sex (1989 & 2006)

Women 1989
	Overall	<Primary School	Primary School	Secondary school	>Secondary school
N	2642	844	1362	316	120
Age	32 (0.2)	35 (0.3)	30 (0.3)	29 (0.3)	30 (0.8)
BMI	21.8 (0.1)	22.0 (0.1)	21.8 (0.1)	21.4 (0.2)	21.4 (0.2)
Overweight %*	11	12	12	11	9
Obese %(N)*	1	1	1	0	3
Urban Index	44 (1.2)	36 (1.0)	45 (1.3)	54 (1.4)	63 (1.5)
Household Income per capita (Yuan)+	2,587 (99)	2,124 (141)	2,643 (112)	3,152 (188)	3,719 (260)
Current Smoker	NA	NA	NA	NA	NA
2006
N	3663	881	1866	460	456
Age	44 (0.2)	52 (0.3)	42 (0.3)	42 (0.5)	37 (0.8)
BMI	23.4 (0.1)	23.8 (0.2)	23.5 (0.1)	23.3 (0.3)	21.9 (0.2)
Overweight %	27	33	29	25	13
Obese%	5	4	6	4	2
Urban Index	63 (1.4)	54 (1.6)	60 (1.4)	74 (1.5)	82 (1.3)
Household Income per capita (Yuan)	7,222 (349)	5,621 (442)	6,405 (278)	7,739 (531)	13,086 (1,193)
Current Smoker %	5	9	5	3	2
Men 1989
N	2191	303	1401	303	141
Age	32 (0.2)	35 (0.5)	32 (0.2)	30 (0.3)	34 (0.8)
BMI	21 (0.1)	21 (0.1)	21 (0.1)	21 (0.1)	22 (0.2)
Overweight %	7	5	6	8	11
Obese %	0.3	0	0.4	0.3	0
Urban Index	43 (1.2)	36 (1.2)	42 (1.2)	48 (1.7)	64 (1.6)
Household Income per capita (Yuan)	2,499 (100)	1,835 (140)	2,501 (114)	2,837 (161)	3,364 (144)
Current Smoker %	NA	NA	NA	NA	NA
2006
N	3307	314	1845	609	539
Age	43 (0.3)	51 (0.6)	44 (0.3)	42 (0.5)	39 (0.8)
BMI	23.4 (0.1)	22.6 (0.2)	23.2 (0.1)	23.6 (0.1)	24.2 (0.2)
Overweight%	27	18	25	30	37
Obese%	4	2	4	4	6
Urban Index	63 (1.4)	54 (1.9)	59 (1.4)	68 (1.5)	80 (1.4)
Household Income per capita (Yuan)	7,574 (355)	5,173 (576)	6,306 (289)	8,036 (484)	12,767 (968)
Current Smoker%	79	88	82	77	67

^*Overweight defined as BMI≥25 and Obese as BMI≥30 (21)

⁺Household income is adjusted for inflation