Inflammatory potential (ng IL-8/mg dust), median (min–max) | ||
---|---|---|
Dust samples from: | 10 low prevalence schools | 10 high prevalence schools |
Statistics: Mann Whitney U rank sum test. | ||
Surface (p=0.8) (pooled samples) | 9.8 (3.6–14.9) (n=10) | 11.7 (1.1–28.6) (n=11) |
Floor (p<0.0001) | 1.8 (0.1–6.1) (n=46) | 3.5 (0.8–11.8) (n=49) |
Exhaust outlets (p=0.19) | 3.8 (0.2–30.5) (n=23) | 10.2 (0.7–20.6) (n=19) |