Adverse trends of cardiovascular risk factors among low risk populations (1983-1994) - a cohort study of workers and farmers in Guangzhou, China

Table 4 Factors associated with systolic blood pressure and changes in systolic blood pressure by gender and occupation among cohort populations in Guangzhou, China, 1983-1994

	Males				Females
	Workers		Farmers		Workers		Farmers
	β	SE	β	SE	β	SE	β	SE
Time (10 years)	3.0**	0.7	5.5**	0.7	4.1**	0.7	2.7**	0.5
Age (year)	0.4**	0.1	0.2**	0.1	0.7**	0.1	0.5**	0.1
Education (level^a)	-0.7*	0.4	0.2	0.6	-0.2	0.4	-0.01	0.5
Antihypertensive medication use	13.8**	1.9	15.9**	3.1	13.1**	1.7	17.3**	3.5
Body mass index (kg/m²)	1.5**	0.1	1.0**	0.2	1.5**	0.1	0.6**	0.1
Change in body mass index (kg/m²)	1.5**	0.2	1.5**	0.3	1.1**	0.2	1.0**	0.1
Cigarettes per day (10/d)	-1.6**	0.3	-1.2**	0.2	^b		^b
Change in cigarettes per day (10/d)	0.7*	0.4	0.8*	0.3	^b		^b
Alcohol intake (13.7 g/d^c)	0.5**	0.2	0.3**	0.1	-0.7	0.7	-1.0	0.4
Change in alcohol intake (13.7 g/d^c)	-0.3	0.2	-0.4**	0.1	0.2	1.0	0.9	0.5

**P < 0.01; *P < 0.05; ^aFour education levels: never attended school, primary school, middle school, and high school or higher; ^bNot included in the model because few females smoked; and ^c13.7 g/d is equivalent to 1 drink/d