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Summary statistics for daily number of admissions, levels of air pollutants and meteorological factors in the 10-year period 1 Jan 1995–30 Dec 2004 (n = 3652 days). |
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| A. Daily number of hospital admissions for all, cardiovascular and respiratory causes |
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| Total number (% Nicosia residents)1 |
Mean |
SD |
Min |
25% |
Median |
75% |
Max |
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| All causes |
178 091 |
48.8 |
20.1 |
4 |
31 |
50 |
63 |
111 |
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| Cardiovascular2 |
10 896 (75%) |
3.0 (2.2) |
2.4 (1.9) |
0 (0) |
1 (1) |
3 (2) |
4 (3) |
22 (11) |
|
| Respiratory2 |
14 827 (86%) |
4.1 (3.5) |
3.7 (3.1) |
0 (0) |
1 (1) |
3 (2) |
6 (5) |
20 (18) |
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| B. Levels of air pollutants, shown separately for cold and warm months3 |
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| Number of Days (% of total days)4 |
Mean |
SD |
Min |
5% |
Median |
95% |
Max |
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| Nicosia Central |
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| PM10 24-hour average (μg/m3) |
Cold |
1553 (85.7%) |
57.6 |
52.5 |
5.0 |
20.0 |
50.8 |
103.0 |
1370.6 |
| Warm |
1664 (90.4%) |
53.4 |
30.7 |
18.4 |
32.0 |
50.5 |
77.6 |
933.5 |
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| O3 8-hour MA max (ppb) |
Cold |
1514 (83.6%) |
28.7 |
12.6 |
3.7 |
9.9 |
27.5 |
50.2 |
63.6 |
| Warm |
1692 (92.0%) |
44.4 |
10.3 |
7.8 |
24.4 |
46.1 |
58.8 |
71.1 |
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| Ayia Marina5 |
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| PM10 24-hour average (μg/m3) |
Cold |
918 (84.5%) |
25.9 |
28.0 |
6.3 |
9.3 |
19.0 |
62.3 |
553.2 |
| Warm |
903 (81.8%) |
35.7 |
40.5 |
8.1 |
16.0 |
30.9 |
58.9 |
952.4 |
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| O3 8-hour MA max (ppb) |
Cold |
1155 (80.1%) |
45.7 |
6.8 |
30.2 |
35.1 |
44.6 |
58.4 |
71.0 |
| Warm |
1247 (84.7%) |
54.9 |
8.2 |
28.9 |
40.6 |
55.2 |
68.1 |
78.7 |
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| C. Meteorological factors |
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| Temperature |
Cold |
1812 (100%) |
12.9 |
3.6 |
1.9 |
7.4 |
12.5 |
19.1 |
27.2 |
| Warm |
1840 (100%) |
25.8 |
3.9 |
11.8 |
19.0 |
26.3 |
31.4 |
35.5 |
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| Rel. Humidity |
3591 (98.3%) |
65.0 |
14.0 |
16.6 |
38.5 |
66.2 |
85.8 |
96.5 |
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| Dew Point |
3591 (98.3%) |
11.3 |
5.5 |
-7.6 |
2.4 |
10.8 |
20.4 |
24.2 |
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Notes: 1 In the case of cause-specific admissions, information on residence was available allowing the analyses to be restricted to those resident in the Nicosia district; the same was not possible for all-cause admissions as only aggregated data were available. In parentheses, the proportion of Nicosia residents among total number of admissions. 2 Summary statistics when restricting numbers to Nicosia residents are shown in parentheses. 3 Cold months include Jan, Feb, Mar Apr, Nov and Dec, based on monthly average temperatures, while warm months include all the rest. 4 About 10% of the 3652 days in the 10-year study period were excluded as no data were available as well as an additional 2% of days for which only less than 12 hourly measurements were recorded. 5 PM10 and O3 data from the station of Ayia Marina were available only from 1999 and 1997 onwards reducing the study period to 6 and 8 years respectively. | |||||||||
Middleton et al. Environmental Health 2008 7:39 doi:10.1186/1476-069X-7-39 |
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