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Table 1 Characteristics of the participants

From: Influence of mercury exposure on blood pressure, resting heart rate and heart rate variability in French Polynesians: a cross-sectional study

Variables Teenagers (12-17 years old) (n = 101) Adults (≥ 18 years old) (n = 180)
  Mean
(SD or 95% CI)
Median (25th-75th percentiles) Proportion (%) Mean (SD or 95% CI) Median (25th -75th percentiles) Proportion (%)
Age (years) 14.2 (1.5) 14.0 (13.0-15.0)   48.6 (14.8) 48.0 (39.0-58.0)  
Gender (males, %)    44 (43.6%)    85 (47.2%)
Mercury (μg/L)* 8.1 (7.2-9.1) 8.5 (6.3-11.0)   14.5 (12.9-16.4) 13.5 (8.5-22.0)  
LDL-cholesterol (mmol/L) 2.15 (0.62) 2.09 (1.71-2.50)   3.25 (0.94) 3.25 (2.62-3.81)  
HDL-cholesterol (mmol/L) 1.19 (0.24) 1.16 (1.03-1.35)   1.29 (0.29) 1.24 (1.06-1.56)  
Triglycerides (mmol/L)* 0.90 (0.82-1.00) 0.86 (0.66-1.14)   1.23 (1.14-1.34) 1.15 (0.82-1.82)  
BMI (kg/m2) 24.9 (5.6) 23.9 (21.2-27.1)   32.7 (7.9) 31.1 (27.3-36.5)  
Waist circumference (cm) 165.0 (15) 165.5 (161.0-172)   168.2 (9.3) 168.0 (161.0-175.0)  
Fasting glucose (mmol/L)* 5.1 (5.0-5.2) 5.2 (4.9-5.4)   5.9 (5.6-6.1) 5.5 (5.0-6.3)  
Fasting insulin (pmol/L)* 96.9 (85.5-110.1) 97.0 (69.0-140.0)   64.9 (57.9-72.7) 69.0 (38.0-101.0)  
EPA (% of total fatty acids)* 0.43 (0.41-0.45) 0.42 (0.36-0.49)   0.77 (0.72-0.83) 0.71 (0.54-1.08)  
DHA (% of total fatty acids) 4.49 (0.93) 4.50 (3.87-5.12)   6.41 (1.38) 6.22 (5.56-7.26)  
Total n-3 PUFAs
(% of total fatty acids)
6.79 (0.99) 6.72 (6.12-7.51)   9.24 (1.86) 8.97 (8.00-10.24)  
Selenium (μg/L)* 165.2 (159.5-171.2) 170.0 (150.0-190.0)   259.9 (245.8-274.9) 250.0 (200.0-320.0)  
Lead (μg/L)* 20.9 (19.1-22.8) 21.0 (15.0-29.0)   23.1 (21.4-24.9) 21.5 (16.0-29.0)  
Smoking habits (yes, %)    26 (25.7%)    102 (56.7%)
Alcohol consumption (yes, %)    33 (33.3%)    90 (51.1%)
Anti-hypertensive treatment (yes, %)    0    41 (22.8%)
  1. * For variables not normally distributed, the geometric means and 95% confidence interval (CI) are presented; SD: Standard deviation; μg/L can be converted nmol/L multiplying by 5.