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Table 3 Cumulative (lag 0–6 days) percentage change (95% confidence interval) in asthma hospitalizations associated with an interquartile range increase in pollen or fungal spore concentration, Brussels-Capital Region, 2008–2013

From: Relationships between aeroallergen levels and hospital admissions for asthma in the Brussels-Capital Region: a daily time series analysis

Taxon

Interquartile range (grains or spores /m3)†

Percentage change (95% CI)

Alder

9

0.2 (−2.2, 2.7)

Hazel

4

0.5 (−2.5, 3.6)

Yew Cupressaceae

49

−2.5 (−6.9, 2.1)

Ash

4

0.0 (−0.6, 0.5)

Hornbeam

1

0.7 (0.2, 1.3)*

Birch

40

3.2 (1.1, 5.3)*

Oak

22

−5.6 (−11.3, 0.5)

Plantain

1

4.1 (−11.9, 22.9)

Grass

12

5.9 (0.0, 12.0)*

Mugwort

1

1.4 (−4.4, 7.6)

Alternaria

40

−0.8 (−3.8, 2.3)

Cladosporium

2962.5

1.2 (−6.9, 10.0)

  1. Note: Models adjusted for seasonal and long-term trends, day of the week, public holidays and DLNM cross-bases for mean temperature and relative humidity
  2. †Calculated based on the aeroallergen season defined for each taxa (equal to 0 grains/m3 for plantain but cumulative percentage change calculated for an increase of 1 grain/m3)
  3. * P < 0.05
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Environmental Health

ISSN: 1476-069X