Results (
Thai) 1:
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Allergens
Overall, Bla g2 was infrequently detected
in study group homes (n = 16), with median levels at baseline and exit visits less than its DL
of 0.196 lg/g. Although Bla g2 was generally
less frequently detected at the exit visit (6%,
6%, and 0% ‡ DL in child’s bedroom, kitchen,
and living room, respectively) than the baseline
visit (6%, 19%, and 12% ‡ DL, respectively),
these decreases were not significant. Dust mite
allergen, particularly Der p1 (the predominant
dust mite species in the Seattle area46) and
Mite Group 2, was detected more frequently
than Bla g2. The percentage of Der p1 results
equal to or greater than the DL significantly
decreased from baseline (75%) to exit visit
(44%) in the living room (P = .059 [marginally
significant]), but there was no significant
change in the child’s bedroom (75% to 69%).
The percentage of Mite Group 2 sample results
equal to or greater than the DL significantly
decreased between baseline and exit visits
in both the child’s bedroom (94% to 75%,
P = .083 [marginally significant]) and the living
room (75% to 44%, P = .025). Mus m1
showed a significant increase in the percentage
of results equal to or greater than the DL in
both the kitchen (25% to 62%, P = .014) and
living room (37% to 81%, P = .008); however,
the majority of Mus m1 results were very
low, with medians at or just above the DL of
0.002 in all locations. A summary of baseline
and exit visit allergen concentrations is available
as a supplement to the online version of
this article at http://www.ajph.org
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