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. 2013 Jul 23;121(10):1142–1147. doi: 10.1289/ehp.1306768

Table 2.

RR (95% CI) for each exposure metric (lag 0–1 in all cases).

Exposure measures Salbutamol dispensations Asthma-related physician visits
BlueSky PM2.5 (per 30 μg/m3) 1.08 (1.06, 1.10) 1.05 (1.01, 1.09)
Truncated BlueSky PM2.5 (per 30 μg/m3) 1.11 (1.08, 1.13) 1.07 (1.02, 1.12)
Monitor PM2.5 (per 30 μg/m3) 1.12 (1.07, 1.17) 1.10 (1.00, 1.21)
BlueSky Plumes (1 vs. 0) 1.05 (1.02, 1.09) 1.06 (0.99, 1.15)
HMS Plumes (1 vs. 0) 1.05 (1.01, 1.09) 1.09 (1.02, 1.18)
All models are adjusted for same-day maximum temperature, day-of-week, holiday, and week-of-study. PM2.5 values > 300 μg/m3 were truncated to 300 μg/m3 in truncated BlueSky PM2.5.