Figure 4. ORs (95% CI) for risks of arrhythmias associated with a 10 μg/m³ increase in 12‐month PM₁₀ concentrations, by baseline participant characteristics.

ORs were adjusted for age (continuous), sex (men or women), study center (Seoul or Suwon), year of visit (continuous), education level (no education, elementary school, middle school, high school, technical college, university, or more), systolic blood pressure (continuous), smoking status (never, current, former), height (continuous), weight (continuous), alcohol consumption (none, moderate, or excessive), physical activity (none, <3 times per week, or ≥3 times per week), and history of diabetes mellitus (yes or no) and history of hypertension (yes or no). OR indicates odds ratio.