Percentage increases in risk (IR%), 95% CIs, and p values by all natural cause death during 2003–2009 in the Reykjavik area, at lag 2 and 3, the best models according to the Akaike Information Criterion
| Components/ parameters | IR% | 95% CI | p Value |
|---|---|---|---|
| Lag 2 | |||
| Summer* | 5.30 | −16.88 to 33.50 | 0.670 |
| H2S (>7 µg/m3) | −18.75 | −29.49 to −6.39 | 0.004 |
| Interaction terms | |||
| Summer:H2S (>7 µg/m3) | 43.50 | 11.10 to 85.50 | 0.006 |
| Lag 3 | |||
| Summer* | 4.00 | −14.77 to 27.00 | 0.698 |
| Component 4† | −0.12 | −0.71 to 0.50 | 0.704 |
| H2S (>7 µg/m3) | −14.87 | −25.80 to −2.33 | 0.022 |
| Interaction terms | |||
| Summer:Component 4 | −0.95 | −1.86 to −0.04 | 0.042 |
| Summer:H2S (>7 µg/m3) | 36.90 | 6.20 to 76.50 | 0.015 |
*Summer months of 1 May–31 October.
†Component 4 consists of: NO2 (0.648), PM10 (−0.159), O3 (0.691), and temperature (−0.268; table 4).