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Table 1 Distribution of pollution and meteorological data and daily respiratory emergency room visits and hospital admissions during dust and control days as well as pollution and meteorological data for the whole 6-year period

From: Desert dust outbreaks and respiratory morbidity in Athens, Greece

  Desert dust days
N = 132
Control days
N = 177
Whole period
2001-2006
Pollution data in μg/m3
(median (25th–75th percentile))
 PM10 45.9 (36.5–78.5) 44.0 (34.6–54.2) 39.6 (30.7–50.8)
 SO2 10.3 (6.8–16.4) 13.8 (9.0–20.3) 13.0 (7.9–20.6)
 NO2 40.3 (32.0–48.9) 48.0 (39.7–60.4) 44.2 (34.8–54.6)
 O3 61.8 (46.5–72.4) 71.7 (51.4–90.9) 68.7 (47.5–90.2)
Meteorological data (mean (standard deviation))
 Temperature (°C) 18.9 (5.2) 19.1 (5.9) 18.0 (12.4–24.8)
 Relative humidity (%) 69.1 (14.8) 67.1 (14.4) 67.1 (56.0–76.9)
Number of daily emergency room visits
(median (25th–75th percentile))
 Total visits per day 50 (35–68) 38 (25–47)  
 Male patients 27 (19–35) 19 (12–25)  
 Female patients 23 (15–32) 17 (12–23)  
 Age 18-64 years 30 (19–39) 22 (14–27)  
 Age ≥ 65 years 20 (13–29) 16 (10–21)  
 Total hospital admissions per day 15 (10–22) 12 (6–16)  
 Male patients 8 (5–13) 7 (4–10)  
 Female patients 5 (3–9) 4 (2–7)  
 Age 18-64 years 5 (3–8) 4 (2–6)  
 Age ≥ 65 years 9 (6–14) 8 (4–11)