Changes in atopy over a quarter of a century, based on cross sectional data at three time periods
Open Access
- 15 April 2005
- Vol. 330 (7501), 1187-1188
- https://doi.org/10.1136/bmj.38435.582975.ae
Abstract
We used frozen (−40°C) serum samples from men aged 40-64 years who had attended the British United Provident Association (BUPA) Medical Centre, London, for a routine medical examination. An advantage of this cohort is its socioeconomic homogeneity—almost all were professionals or businessmen. We matched (by age and month of attendance) the 513 samples from men who attended during 1996-8 to samples from 513 men seen in 1981-2 and 513 seen in 1975-6. The serum samples had not previously been thawed; previous work has shown negligible decay in IgE during storage of serum.5Keywords
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