From: Recent exposure to ultrafine particles in school children alters miR-222 expression in the extracellular fraction of saliva
Variable
Boys
37 (46.3Â %)
Age, years
10.44 ± 0.97
BMI, kg/m2
17.01 ± 2.42
TV watching, hours/week
9.32 ± 5.46
Exposure to tobacco smoke
9 (11.2Â %)
Maternal education
Low
26 (32.5Â %)
High
54 (67.5Â %)