Association between PM and hospitalisations: percent increase in risk (IR%) of hospital admissions and 95% CI, associated with IQR increases in different particulate matter (PM) fractions due to hospitalisation and the presence or absence of Saharan dust
| PM2.5 (IQR=12.8 µg/m3) | PM2.5–10 (IQR=10.8 µg/m3) | PM10 (IQR=19.8 µg/m3) | ||||
|---|---|---|---|---|---|---|
| Cause | IR% (95% CI) | p-Interaction* | IR% (95% CI) | p-Interaction* | IR% (95% CI) | p-Interaction* |
| Cardiac diseases (lag 0–1) (ICD9: 390–429) | 2.41 (−0.21 to 5.09) | 3.93 (1.58 to 6.34) | 3.37 (1.11 to 5.68) | |||
| Saharan dust-free days | 1.93 (−0.82 to 4.76) | – | 3.83 (0.77 to 6.98) | – | 2.77 (0.06 to 5.55) | – |
| Saharan dust-affected days | 5.07 (−1.61 to 12.21) | 0.378 | 4.03 (0.26 to 7.94) | 0.934 | 3.30 (−1.24 to 8.06) | 0.841 |
| Cerebrovascular diseases (lag 0) (ICD9: 430–438) | −2.14 (−4.73 to 0.53) | 1.68 (−0.70 to 4.11) | 2.64 (0.06 to 5.29) | |||
| Saharan dust-free days | −2.85 (−5.62 to 0.00) | – | 1.20 (−1.98 to 4.49) | – | 0.90 (−2.34 to 4.25) | – |
| Saharan dust-affected days | 0.93 (−5.16 to 7.42) | 0.250 | 1.86 (−1.85 to 5.72) | 0.792 | 5.04 (0.39 to 9.91) | 0.143 |
| Diseases of the respiratory system (lag 0–5) (ICD9: 460–519) | −0.52 (−5.33 to 4.53) | 4.77 (−0.57 to 10.40) | 3.59 (0.18 to 7.12) | |||
| Saharan dust-free days | −1.03 (−6.18 to 4.40) | – | −0.32 (−6.33 to 6.07) | – | 3.00 (−0.70 to 6.85) | – |
| Saharan dust-affected days | −1.45 (−11.58 to 9.85) | 0.942 | 14.62 (5.34 to 24.72) | 0.006 | 4.40 (−3.74 to 13.22) | 0.760 |
| Diseases of the respiratory system 0–14 (lag 0–5) (ICD9: 460–519) | −2.14 (−9.09 to 5.35) | −1.20 (−8.52 to 6.71) | −0.04 (−4.64 to 4.78) | |||
| Saharan dust-free days | −3.30 (−10.56 to 4.55) | – | −4.71 (−13.07 to 4.46) | – | 0.23 (−4.84 to 5.56) | – |
| Saharan dust-affected days | −1.50 (−16.59 to 16.31) | 0.833 | 2.87 (−9.10 to 16.41) | 0.299 | −2.10 (−12.98 to 10.14) | 0.712 |
*p Value of interaction term PM×Dust Index.