Table 1 Comparison of participant characteristics between the hot-spot and non-exposed areas

Age (years)

25 (21.5–27.8)

20 (19–25)

0.054^a

Height (cm)

150.2 (148.2–156.7)

152.5 (150.3–155.7)

0.51^b

Weight (kg)

46.3 (45.0–50.4)

48.5 (44.8–51.0)

0.81^a

BMI (kg m⁻²)

20.4 (20.0–21.6)

20.6 (19.8–21.3)

0.93^b

Family income (×10⁴ VND/month)

200 (163–375)

200 (75–300)

0.19^a

Residence period (years)

24 (20.3–27.8)

20 (19–25)

0.13^a