C-Reactive Protein Levels in relation to Incidence of Hypertension in Chinese Adults: Longitudinal Analyses from the China Health and Nutrition Survey

Table 2

Correlation of hs-CRP with relevant covariates in the 2009 CHNS.

Variable	hs-CRP
	r	95% CI
Systolic blood pressure	0.133	(0.099, 0.167)	<0.001
Age	0.189	(0.158, 0.219)	<0.001
Diastolic blood pressure	0.104	(0.071, 0.389)	<0.001
Waist circumference	0.243	(0.212, 0.273)	<0.001
BMI	0.186	(0.155, 0.216)	<0.001
Educational level	−0.067	(−0.098, −0.035)	<0.001
Total triglyceride	0.184	(0.153, 0.215)	<0.001
Glucose	0.141	(0.109, 0.172)	<0.001
Area	−0.011	(−0.042, −0.021)	0.515
Han nationality	−0.005	(−0.037, 0.026)	0.735
Total cholesterol	0.211	(0.180, 0.241)	<0.001
Alcohol consumption	0.012	(−0.019, 0.044)	0.447
Sex	−0.028	(−0.061, 0.003)	0.076
Physical activity	−0.003	(−0.043, 0.037)	0.872
Sleep duration	−0.014	(−0.045, 0.018)	0.404
Smoking status	0.041	(0.009, 0.073)	0.011
HDL-C	−0.154	(−0.184, −0.122)	<0.001
Total energy intake	−0.041	(−0.073, −0.008)	0.013
HOMA-IR	0.152	(0.121, 0.183)	<0.001

CRP, BMI, and sleep duration were grade variables; BP, age, waistline, TC, glucose, TG, HDL-C, total energy intake, and HOMA-IR were continuous variables; educational level, area, sex, Han nationality, alcohol consumption, and smoking status were categorical variables. CHNS: China Health and Nutrition Survey; hs-CRP: high-sensitivity C-reactive protein; BMI: body mass index; HDL-C: high-density lipoprotein cholesterol; HOMA-IR: the homeostasis model assessment of insulin resistance; CI: confidence interval.