Skip to main content

Table 4 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, by age group, 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

Percentage change (95% CI)

 

0–14 years

15–59 years

60 or more years

P interaction

Alder

−1.0 (−3.7, 1.7)

0.0 (−2.6, 2.6)

1.0 (−1.5, 3.7)

0.16

Hazel

−0.1 (−3.3, 3.2)

1.0 (−2.1, 4.2)

0.5 (−2.7, 3.8)

0.60

Yew Cupressaceae

−3.9 (−8.8, 1.4)

−3.0 (−7.9, 2.2)

−1.2 (−6.1, 4.1)

0.35

Ash

−0.1 (−0.6, 0.5)

−0.2 (−0.9, 0.4)

0.1 (−0.5, 0.7)

0.37

Hornbeam

0.7 (0.1, 1.3)*

0.8 (0.2, 1.3)*

0.7 (0.1, 1.3)*

0.73

Birch

3.3 (1.1, 5.5)*

3.3 (1.1, 5.6)*

2.8 (0.6, 5.1)*

0.50

Oak

−5.7 (−11.6, 0.5)

−5.0 (−10.9, 1.3)

−7.2 (−13.2, − 0.8)*

0.23

Plantain

7.4 (−9.9, 28.1)

−2.1 (−19.1, 18.5)

4.7 (−13.4, 26.5)

0.11°

Grass

5.2 (−0.9, 11.5)

7.9 (1.7, 14.4)*

4.1 (−2.1, 10.7)

0.05°

Mugwort

1.3 (−4.8, 7.9)

5.3 (−1.0, 12.1)

−4.2 (−10.8, 2.9)

< 0.01°

Alternaria

−0.3 (−3.3, 2.9)

0.2 (−2.9, 3.4)

−3.2 (−6.5, 0.2)

0.10°

Cladosporium

2.3 (−6.1, 11.3)

2.8 (−5.6, 12.0)

−2.7 (−11.0, 6.3)

0.13°

  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. * P < 0.05
  3. ° P interaction < 0.15 (significant effect modification by age group)