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Table 1 Daily emergency hospital visits, pollutant levels and meteorological variables in Reykjavík 2003-2009
| n (%) | Mean | Std. dev | Min-imum | Max-imum | Percentiles | |||
|---|---|---|---|---|---|---|---|---|
| 25th | 50th | 75th | ||||||
| Emergency hospital visits | ||||||||
| All | 24439 (100%) | 9.6 | 3.8 | 0 | 26 | 7 | 9 | 12 |
| Cardiaca | 18782 (76.9%) | 7.3 | 3.3 | 0 | 20 | 5 | 7 | 9 |
| Strokeb | 4082 (16.7%) | 1.6 | 1.3 | 0 | 8 | 1 | 1 | 2 |
| Pulmonaryc | 1575 (6.4%) | 0.6 | 0.8 | 0 | 5 | 0 | 0 | 1 |
| Female | 10269 (42.0%) | 4.0 | 2.2 | 0 | 14 | 2 | 4 | 5 |
| Male | 14170 (58.0%) | 5.5 | 2.6 | 0 | 16 | 4 | 5 | 7 |
| Age 70 years or older | 14862 (60.8%) | 5.8 | 2.7 | 0 | 19 | 4 | 6 | 7 |
| Pollutants & meteorological variables | ||||||||
| O3 (μg/m3)d | 2355 (92.1%) | 47.3 | 16.8 | 1.4 | 119.4 | 36.3 | 46.1 | 57.2 |
| NO2 (μg/m3) | 2372 (92.8%) | 22.1 | 13.6 | 1.5 | 111.6 | 12.0 | 19.2 | 28.6 |
| PM10 (μg/m3) | 2396 (93.7%) | 21.2 | 19.8 | 1.3 | 261.1 | 11.0 | 15.6 | 23.6 |
| Temperature (°C) | 2533 (99.1%) | 6.0 | 5.2 | −11.3 | 21.2 | 2.3 | 6.2 | 10.4 |
| Relative humidity (%) | 2533 (99.1%) | 78.0 | 10.8 | 39.3 | 100.0 | 70.5 | 79.6 | 86.3 |
