Reduced risk of wheezing in children using feather pillows is confirmed

Editor—T J Kemp and colleagues' study of levels of mite allergen in pillows1 was prompted by the unexpected findings of our case-control study in which feather pillows were associated with a reduced risk of severe childhood asthma.2 The cases and controls in our analysis were drawn from a larger survey, and a different subsample of the survey respondents underwent skin prick testing with extracts of Der p I, mixed grass pollen, and cat fur, as described elsewhere.3 The subsample included groups at high and low risk …