Associations between respiratory health among pupils (N = 462) from junior high schools in Johor Bahru, Malaysia and concentration of chemical microbial markers in vacuumed dust from the classroom.

AM = arithmetic mean, GM = Geometric Mean, GSD = Geometric standard deviation.3-OH FA: 3-hydroxy fatty acids; LPS: Lipopolysaccharide (endotoxin); MuA: Muramic Acid.Reported data are Odds Ratio (OR) with 95% Confidence Interval (CI) by a 2-level hierarchic logistic regression model adjusted for gender, race, tobacco smoking and heredity:(OR calculated for 10 nmol/g dust increase in C10 3-OH FA).(OR calculated for 10 nmol/g dust increase in C12 3-OH FA).(OR calculated for 100 nmol/g dust increase in C14 3-OH FA).(OR calculated for 100 nmol/g dust increase in C16 3-OH FA).(OR calculated for 100 nmol/g dust increase in C18 3-OH FA).(OR calculated for 100 nmol/g dust increase in LPS).(OR calculated for 10 µg/g dust increase in MuA).(OR calculated for 1 µg/g dust increase in ergosterol).(OR calculated for 1000 mg increase in fine dust).*p**p***p