Table 1

Basic characteristics of study population based on the quintiles of hs-CRP level (n=517)

CharacteristicsQuintiles of hs-CRP (mg/L)P for trend
1
(≤0.50)
2
(0.51–0.90)
3
(0.91–1.63)
4
(1.64–3.04)
5
(≥3.05)
N10899106100104
Demographic characteristics
 Age (years)50.2 (6.6)50.2 (5.6)51.3 (7.3)51.4 (6.0)51.5 (7.4)0.165
 Female (%)13.013.113.219.018.30.206
 Educational background
 (High school or above, %)
66.753.575.566.062.50.743
Clinical characteristics
 BMI (kg/m2)25.3 (3.2)26.0 (2.6)26.8 (3.1)26.8 (3.0)27.0 (3.6)0.001
 Relatively high CHD risk (≥10%, %)25.032.340.648.041.30.057
 Systolic blood pressure (mm Hg)129.4 (14.3)132.7 (15.7)133.6 (15.5)135.6 (16.9)136.3 (17.4)0.873
 Diastolic blood pressure (mm Hg)82.1 (11.0)84.3 (11.5)85.1 (11.3)86.3 (11.6)87.5 (12.2)0.151
 Diabetes (yes, %)12.012.111.318.017.30.174
Biochemical characteristics
 Total cholesterol (mg/dL)202.8 (35.6)209.1 (37.9)207.8 (40.9)211.1 (41.4)206.7 (49.6)0.873
 HDL cholesterol (mg/dL)53.2 (13.4)51.6 (13.5)51.8 (9.6)50.7 (12.1)49.5 (10.6)0.151
 Serum creatinine (μmol/L)100.5 (32.8)104.4 (49.7)98.9 (14.9)99.5 (34.9)99.1 (17.6)0.528
Lifestyle characteristics
 Activity level (h/week)2.0 (2.5)1.3 (2.3)1.8 (2.9)1.6 (2.7)1.2 (2.3)0.047
 Smoking (yes, %)24.129.334.936.035.60.165
 Alcohol drinking (yes, %)53.761.663.261.052.90.328
  • Data are mean (SD), unless otherwise indicated.

  • BMI, body mass index; HDL, high density lipoprotein; hs-CRP, hypersensitive C-reactive protein.