PMID- 24654915 OWN - NLM STAT- MEDLINE DCOM- 20141203 LR - 20220309 IS - 1398-9995 (Electronic) IS - 0105-4538 (Linking) VI - 69 IP - 5 DP - 2014 May TI - Geographical variation in the prevalence of sensitization to common aeroallergens in adults: the GA(2) LEN survey. PG - 643-51 LID - 10.1111/all.12397 [doi] AB - BACKGROUND: Geographical variation in the prevalence of sensitization to aeroallergens may reflect differences in exposure to risk factors such as having older siblings, being raised on a farm or other unidentified exposures. OBJECTIVE: We wanted to measure geographical variation in skin prick test positivity and assess whether it was explained by differences in family size and/or farm exposure. We also compared prevalence in younger and older subjects. METHODS: Within the Global Allergy and Asthma European Network (GA(2) LEN) survey, we measured the prevalence of skin prick positivity to a panel of allergens, and geometric mean serum total immunoglobulin E (IgE), in 3451 participants aged 18-75 years in 13 areas of Europe. Estimated prevalence was standardized to account for study design. We compared prevalence estimates in younger and older subjects and further adjusted for age, gender, smoking history, farm exposure, number of older siblings and body mass index (BMI). RESULTS: Skin prick test positivity to any one of the measured allergens varied within Europe from 31.4% to 52.9%. Prevalence of sensitization to single allergens also varied. Variation in serum total IgE was less marked. Younger participants had higher skin prick sensitivity prevalence, but not total IgE, than older participants. Geographical variation remained even after adjustment for confounders. CONCLUSION: Geographical variation in the prevalence of skin prick test positivity in Europe is unlikely to be explained by geographical variation in gender, age, smoking history, farm exposure, family size and BMI. Higher prevalence in younger, compared to older, adults may reflect cohort-associated increases in sensitization or the influence of ageing on immune or tissue responses. CI - (c) 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Newson, R B AU - Newson RB AD - Respiratory Epidemiology and Public Health Group, National Heart and Lung Institute, Imperial College London, London, UK. FAU - van Ree, R AU - van Ree R FAU - Forsberg, B AU - Forsberg B FAU - Janson, C AU - Janson C FAU - Lotvall, J AU - Lotvall J FAU - Dahlen, S-E AU - Dahlen SE FAU - Toskala, E M AU - Toskala EM FAU - Baelum, J AU - Baelum J FAU - Brozek, G M AU - Brozek GM FAU - Kasper, L AU - Kasper L FAU - Kowalski, M L AU - Kowalski ML FAU - Howarth, P H AU - Howarth PH FAU - Fokkens, W J AU - Fokkens WJ FAU - Bachert, C AU - Bachert C FAU - Keil, T AU - Keil T FAU - Kramer, U AU - Kramer U FAU - Bislimovska, J AU - Bislimovska J FAU - Gjomarkaj, M AU - Gjomarkaj M FAU - Loureiro, C AU - Loureiro C FAU - Burney, P G J AU - Burney PG FAU - Jarvis, D AU - Jarvis D LA - eng GR - G0400473/MRC_/Medical Research Council/United Kingdom GR - G0800766/MRC_/Medical Research Council/United Kingdom GR - G0900453/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20140321 PL - Denmark TA - Allergy JT - Allergy JID - 7804028 RN - 0 (Air Pollutants) RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Air Pollutants/*adverse effects MH - Allergens/classification/*immunology MH - Animals MH - Female MH - Global Health/statistics & numerical data MH - Humans MH - Hypersensitivity/*epidemiology/*immunology MH - Immunoglobulin E/blood/immunology MH - Male MH - Middle Aged MH - Prevalence MH - Public Health Surveillance MH - Risk Factors MH - Young Adult OTO - NOTNLM OT - Global Allergy and Asthma European Network, Europe OT - geographical variation OT - prevalence OT - skin prick tests OT - total immunoglobulin E EDAT- 2014/03/25 06:00 MHDA- 2014/12/15 06:00 CRDT- 2014/03/25 06:00 PHST- 2014/02/14 00:00 [accepted] PHST- 2014/03/25 06:00 [entrez] PHST- 2014/03/25 06:00 [pubmed] PHST- 2014/12/15 06:00 [medline] AID - 10.1111/all.12397 [doi] PST - ppublish SO - Allergy. 2014 May;69(5):643-51. doi: 10.1111/all.12397. Epub 2014 Mar 21.