Association of APP gene polymorphisms and promoter methylation with essential hypertension in Guizhou: a case–control study

Table 2 Basic characteristics of methylation research subjects

	EH (n = 60)	Control (n = 59)	t/χ²	P
Gender (male/female)	30/30	30/29	0.009	0.926
Age (years)	59.12 ± 5.85	54.41 ± 6.13	− 4.287	< 0.001
Normal BMI [n (%)]	26 (43.3)	26 (44.1)
Low BMI [n (%)]	2 (3.3)	3 (5.1)	0.000	1.000^a
Overweight [n (%)]	27 (45.0)	22 (37.3)	0.263	0.608^a
Obesity [n (%)]	5 (8.3)	8 (13.6)	0.555	0.456^a

Bold indicates P < 0.05
Measurement data are expressed as mean ± SD, and Student’s t test is used for comparison between groups. Counting data are expressed as frequency (rate), and Chi-square test is used for comparison between groups
^aCompared with the normal BMI group

ISSN: 1479-7364