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Table 4 Exhaled CO data

From: A pilot study with early adolescents: dealing with diet, tobacco and air pollution using practical experiences and biological markers

  No. Ex-CO* at T1 P
Smoking status
 Not smoking 209 0.43 (± 0.83) t(45.408) = 5.61, p < 0.01
 Current smokers 45 3 (± 3.05)
Sex    
 Male 82 0.56 (± 1.03) t(250.85) = −2.47, p < 0.05
 Female 172 1.03 (± 2.02)
Sex/Current smokers
 Male 9 2.33 (± 1.58) t(43) = −0.72, p = 0.47
 Female 36 3.17 (± 3.3)
  1. *Ex-CO data are expressed in parts per million (ppm)