Allergen exposure and asthma Magnus Wickman, Magnus Swartengren The Lancet Volume 357, Issue 9261, (March 2001) DOI: 10.1016/S0140-6736(05)71613-5 Copyright © 2001 Elsevier Ltd Terms and Conditions
Figure Quartiles of early exposure to cat allergen and development of asthma at age 7 years Constructed from data table 3 of Lau and colleagues. Quartile 1=<0·015-0·055 μg/g (reference level), quartile 2=0·055-<0·215 μ/g, and quartile 4=0·216-47 μ/g The Lancet 2001 357, DOI: (10.1016/S0140-6736(05)71613-5) Copyright © 2001 Elsevier Ltd Terms and Conditions