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Table 1 Characteristics of the study population (n = 80)

From: Recent exposure to ultrafine particles in school children alters miR-222 expression in the extracellular fraction of saliva

Variable

 

Boys

37 (46.3 %)

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 (11.2 %)

Maternal education

 
 

Low

26 (32.5 %)

 

High

54 (67.5 %)

  1. High maternal education was defined as college or university
  2. Mean ± SD; frequency (%)
  3. SD standard deviation, BMI body mass index