Table 7.
Relationships between elevated exposure to particulate matter (PM) and asthma and Early Airways Obstruction in the stable and granary in the farmers
| PM | Asthma | Early Airways Obstruction | ||||||
|---|---|---|---|---|---|---|---|---|
| cORa (95% CI)b | aOR† (95% CI) | cOR (95% CI) | aOR† (95% CI) | |||||
| Average Particles number (pt/cm3) | 2.48 | 0.68–8.97 | 2.43 | 0.50–11.80 | 1.65 | (0.33–8.39) | 1.85 | (0.32–10.59) |
| PM1 (μg/m3) | 0.63 | 0.14–2.91 | 1.07 | 0.19–5.84 | 0.56 | (0.13–2.52) | 0.50 | (0.08–3.04) |
| PM2.5 (μg/m3) | 0.29 | 0.04–2.42 | 0.30 | 0.05–1.69 | 5.31 | (1.25–22.65) | 5.26 | (1.09–25.28) |
| PM10 (μg/m3) | 1.28 | 0.34–4.79 | 2.20 | 0.38–12.55 | 1.32 | (0.31–5.58) | 1.10 | (0.22–5.42) |
| TSP (μg/m3) | 0.88 | 0.22–3.54 | 1.59 | 0.27–9.21 | 1.67 | (0.39–7.13) | 0.97 | (0.15–6.44) |
Early Airways Obstruction: (FEF25–75 < 80% of the predicted level and FEV / FVC > 70%, after bronchodilation during the reversibility test)
UFPM Ultrafine particulate matter, PM Particulate Matter, TSP Total Suspended Particles
aOR odds ratios
b(95% CI): 95% confidence interval
†aOR: Adjusted odds ratio adjusted for gender, age, smoking habit, relative humidity, presence of pets and presence of mold: values in bold denote statistically significant estimates of OR (p < 0.05)