title: [Prevalence of smoking among 741 High school students from Dakar. Carbon monoxide measurement].
abstract: BACKGROUND
  Tobacco consumption is a net increase in our areas. In Senegal, as in other African countries, sponsorship of cultural and sporting events in schools promote tobacco use among schoolchildren. Our objective was to assess the prevalence of tobacco in the French School of Jean Mermoz of Dakar by a survey completed by a measurement of carbon monoxide (CO) in expired air.
  
  
  METHODS
  seven hundred forty-one students (n = 402 girls and n = 339 boys), aged 11 to 18 years of French and African cultures, participated in the study. A questionnaire with several items of smoking has been distributed to them . Two weeks after the collection of questionnaires, the CO measuring for all students was conducted.
  
  
  RESULTS
  The prevalence of smoking in High School was 23.1% and smoking was found more in boys according to the questionnaire and piCO+TM with 13.7% and 7.1% respectively. It affected over the upper age class or equal to fifteen years. The most mentioned reason for the initiation of smoking (45.4% of smokers) was curiosity with a need to be free, followed by the influence of the environment famial (44.4%) and friendly (20.5%). The measurement of carbon monoxide showed that 12.4% of our subjects had a smoking profile with 8% light smoking, 1% moderate smoking, and severe smoking was 3% of our students. A significant difference (p = 0.0021) between the two prevalences was found.
  
  
  CONCLUSIONS
  The carbon monoxide intoxication by tobacco use is responsible for microcirculatory accidents such as tissue hypoxia, whereas smoking affects young students, in which the phenomenon is more precocious. Thus it is urgent to establish a policy of tobacco control in schools.
authors.forename: Valentin
authors.initials: V
authors.lastname: Ouédraogo
authors.forename: Mor
authors.initials: M
authors.lastname: Diaw
authors.forename: Abdou Khadir
authors.initials: AK
authors.lastname: Sow
authors.forename: Arnaud J F
authors.initials: AJ
authors.lastname: Tiendrebeogo
authors.forename: Cherine
authors.initials: C
authors.lastname: Husseini
authors.forename: Loubano-Voumbi
authors.initials: LV
authors.lastname: Ghislain
authors.forename: Aissatou
authors.initials: A
authors.lastname: Seck
authors.forename: Fatoumata
authors.initials: F
authors.lastname: Ba
authors.forename: Arame
authors.initials: A
authors.lastname: Mbengue
authors.forename: Bademba
authors.initials: B
authors.lastname: Cissé
authors.forename: Gora
authors.initials: G
authors.lastname: Seck
authors.forename: Fatou B
authors.initials: FB
authors.lastname: Sarr
authors.forename: Abdoualye
authors.initials: A
authors.lastname: Ba
authors.forename: Mbayang Ndiaye
authors.initials: MN
authors.lastname: Niang
authors.forename: Abdoulaye
authors.initials: A
authors.lastname: Samb
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D002248:Carbon Monoxide / Q000032:analysis* / Q000633:toxicity; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D012675:Senegal / Q000453:epidemiology; D017678:Sex Distribution; D012907:Smoking / Q000453:epidemiology*; D000074606:Smoking Prevention; D011795:Surveys and Questionnaires
chemical_list: D002248:Carbon Monoxide