Skip to main content

Table 1 Characteristics of the study participants

From: Associations of time-weighted individual exposure to ambient particulate matter with carotid atherosclerosis in Beijing, China

Variables

Total participants

No. of participants, n

3069

Carotid Atherosclerosis, n (%)

981 (31.96)

Male, n (%)

1420 (46.27)

Age (years), median (IQR)

42 (34–49)

Age ≥ 60, n (%)

197 (6.42)

Education level, n (%)

 Lower or equal to high-school degree

216 (7.04)

 College or university degree

2343 (76.34)

 Over or equal to postgraduate degree

510 (16.62)

Physical activity intensity, n (%)

 Low

1965 (64.03)

 Moderate

923 (30.07)

 High

181 (5.90)

Current smoker, n (%)

579 (18.87)

Current alcohol drinker, n (%)

1147 (37.37)

Excessive salt intake (> 6 g/day), n (%)

830 (27.04)

Medication history of dyslipidemia, n (%)

117 (3.81)

Medication history of hypertension, n (%)

366 (11.93)

Medication history of diabetes, n (%)

117 (3.81)

FBG (mmol/L), median (IQR)

5.18 (4.88–5.55)

MAP (mmHg), median (IQR)

90.00 (81.67–96.67)

BMI (kg/m2), median (IQR)

24.16 (21.87–26.42)

LDL-C (mmol/L), median (IQR)

2.74 (2.28–3.22)

TG (mmol/L), median (IQR)

1.16 (0.78–1.82)

HDL-C (mmol/L), median (IQR)

1.34 (1.12–1.58)

UA (μmol/L), median (IQR)

288.71 (232.00–357.00)

  1. IQR interquartile range, FBG fasting blood glucose, MAP mean arterial pressure, BMI body mass index, LDL-C low-density lipoprotein cholesterol, TG triglycerides, HDL-C high-density lipoprotein cholesterol, UA uric acid, PM2.5 particulate matter with aerodynamic diameter < 2.5 μm, PM10 particulate matter with aerodynamic diameter < 10 μm