Skip to main content

Table 3 Odds Ratios for symptoms at different threshold levels between different pollen grain levels

From: Grass pollen allergy in children and adolescents-symptoms, health related quality of life and the value of pollen prognosis

 

Threshold level (pollen grains per cubic metre)

Levels

Britain/Denmark

Sweden

Traffic lights

Low

1–30

0–10

0–30

Moderate

31–50

11–30

31–80

High

51–150

31–100

81–

Very High

150–

101–