Table 1. General characteristics of the study population in 2007 and 2013.

	2007(n = 3636)	2013(n = 1359)	P value
Sex (male)	1719(47.3%)	602(44.3%)	0.064
Age	45(36,55)	52(44,60)	<0.01*
BMI	23.89(21.48,26.45)	24.46(22.05,27.07)	<0.01*
WC	81(74,89)	83.5(77,91)	<0.01*
SBP	125(115,140)	130(118,146)	<0.01*
DBP	80(75,90)	82(78,90)	0.037*
TC	4.28(3.71,4.92)	5.00(4.00,5.00)	<0.01*
LDL-C	3.00(2.60,3.40)	2.65(2.12,3.18)	<0.01*
TG	1.22(0.83,1.90)	1.60(1.12,2.32)	<0.01*
HDL-C	1.3(1.2,1.6)	1.2(1.0,1.5)	<0.01*
FBG	4.86(4.48,5.33)	5.20(4.80,5.70)	<0.01*
ALT	18.0(13.5,26.9)	20.0(14.0,27.0)	0.022*
AST	21.3(17.6,26.0)	24.0(21.0,29.0)	<0.01*
Occupation (farmer)	1785(49.1%)	605(44.5%)	<0.01*

Result are expressed as the median (25^th quartile, 75^th quartile) or frequency (percentage).

BMI, body mass index; WC, waist circumference; SBP, systolic blood pressure; DBP, diastolic blood pressure; TC, total cholesterol; LDL-C, low-density lipoprotein cholesterol; TG, triglycerides; HDL-C, high-density lipoprotein cholesterol; FBG, fasting blood glucose; ALT, alanine aminotransferase; AST, aspartate aminotransferase.

^*Indicates statistical significance.