Skip to main content

Table 5 Percent excess risk in age-specific respiratory health outcomes associated with SO2 exposure at lag 0–2 (both for exposure as a continuous variable and for days with pollution levels above the air quality guideline value)

From: Severe volcanic SO2 exposure and respiratory morbidity in the Icelandic population – a register study

  SO2 (per 10 μg/m3) SO2 levels > 125 μg/m3
% 95% CI % 95% CI  
Anti-asthma medication (AMD)
 Children 0–17 1.48% 0.61% 2.35% 20.2% 7.8% 32.6%
 Adults 18–65 0.86% 0.20% 1.53% 11.3% 1.8% 20.9%
 Elderly > 65 0.90% 0.14% 1.67% 9.8% −1.4% 20.9%
Primary care MD visits (PCMD)
 Children 0–17 1.24% 0.40% 2.08% 14.2% 3.0% 25.5%
 Adults 18–65 1.21% 0.63% 1.79% 18.5% 10.6% 26.3%
 Elderly > 65 1.11% 0.14% 2.09% 11.8% −2.0% 25.6%
Hospital Emergency Department (HED)
 Children 0–17 1.22% −0.62% 3.10% 7.0% −18.7% 32.7%
 Adults 18–65 0.52% − 0.99% 2.06% 0.0% −20.7% 20.7%
 Elderly > 65 1.01% −0.62% 2.66% 19.7% −1.8% 41.2%
  1. All results are adjusted for season, time, day of week, odd holidays, the outcome at lag1, and MD strike for PCC and HED, relative humidity, temperature, PM10, and NO2. n = 1788