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Table 2 Descriptive statistics of percentage of participants with immune-related disease outcomes in the different FLEHS-2 and FLEHS-3 studies

From: Per- and polyfluoroalkyl substances (PFAS) and immune system-related diseases: results from the Flemish Environment and Health Study (FLEHS) 2008–2014

Immune outcome (%)

2008–2009

2010–2011

2008–2009

2013–2014

2014

FLEHS-2 mothers N = 240 (18–42 years)

FLEHS-2 adolescents N = 197 (14–15 years)

FLEHS-2 adults N = 197 (20–40 years)

FLEHS-3 mothers N = 268 (18–44 years)

FLEHS-3 adults N = 206 (50–65 years)

Doctor diagnosed asthma

8.8

9.1

8.3

9.6

7.3

Current asthma

17.3

14.4

16.5

15.7

17.2

Asthma ever

25.7

20.3

20.6

24.4

25.3

Doctor diagnosed allergic rhinitis

18.1

21.2

34.3

27.2

24.0

Allergic rhinitis

24.3

28.4

36.0

31.2

28.2

Eczema

13.1

15.8

14.2

8.4

12.9

Allergy to animals

9.2

8.3

10.6

14.7

7.6

Systemic allergy

24.7

21.6

41.9

28.1

30.7

Contact allergy

30.1

18.2

30.3

17.1 (products)a 13.1 (metal)a

11.5 (products)a 10.7 (metal)a

  1. Where contact allergy = allergy to metals, personal care products, household or maintenance products. Systemic allergy = allergy to food, medical drugs and insect bites
  2. aIn the FLEHS-3 mothers the grouping was done as two separate groups: product allergy (personal care products, household or maintenance products) and allergy to metals