Table 3.
Aeroallergen (lag days)b | Relative riskc (95% CI) | Estimated increase in daily asthma visitsd (95% CI) |
---|---|---|
Oak/maple pollen (3) | 1.23 (1.02–1.49) | 23% (2–49%) |
Pinaceae pollen (5) | 1.34 (1.24–1.45) | 34% (24–45%) |
Ragweed pollen (5) | 1.54 (1.02–2.33) | 54% (2–133%) |
Concentrations of total pollen, Cladosporium and Alternaria were also found to be statistically significant, but their RRs were too small to be clinically meaningful.
Number of days between asthma hospital visit and high spore levels prior to visit.
The relative risk is for a 100 counts/m3 increase in aeroallergen concentration.
The estimated increase in daily asthma visits is for a 100 counts/m3 increase in aeroallergen concentration.