title: An examination of the smoking identities and taxonomies of smoking behaviour of youth.
abstract: OBJECTIVE
  To address observations that the smoking identities of youth are valid descriptors of their smoking behaviour, we examined the relationships between self-reported smoking identities, perceived levels of addiction, and established taxonomies of smoking behaviour of youth.
  
  
  METHODS
  Cross-sectional data were collected on demographics, perceived extent of addiction to tobacco, smoking history, and self-reported smoking identity from questionnaires administered to 8225 students in British Columbia, Canada. A total of 7246 participants were categorised according to four smoking taxonomies established in the literature. Differences in perceived physical and mental addiction between smoking identity groups were calculated. The strength of the associations between the taxonomies of smoking and the smoking identity groups was also assessed.
  
  
  RESULTS
  There were significant differences in perceived levels of physical (Kruskal-Wallis chi(2) = 3985.02, p<0.001) and mental (Kruskal-Wallis chi(2) = 4046.09, p<0.001) addiction to tobacco by the participants' self-reported smoking identity. Youth smoking identities were modestly associated with the established smoking taxonomies (Pearson C contingency coefficient = 0.64-0.72).
  
  
  CONCLUSIONS
  Self-reported smoking identities appear to provide valid characterisation of the smoking behaviour of youths that complement and elaborate existing taxonomies of smoking behaviour. Questions about self-reported smoking identity should be used in conjunction with smoking behaviour taxonomies when investigating youth smoking behaviours.
authors.affiliation: NEXUS, University of British Columbia, 302-1620 Agronomy Rd, Vancouver, BC V6T1Z3, Canada. chizimuzo.okoli@nursing.ubc.ca
authors.forename: C T C
authors.initials: CT
authors.lastname: Okoli
authors.forename: C G
authors.initials: CG
authors.lastname: Richardson
authors.forename: P A
authors.initials: PA
authors.lastname: Ratner
authors.forename: J L
authors.initials: JL
authors.lastname: Johnson
mesh_terms: D000293:Adolescent; D001955:British Columbia / Q000453:epidemiology; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D000297:Psychology, Adolescent / Q000145:classification*; D012907:Smoking / Q000523:psychology*; D014029:Tobacco Use Disorder / Q000145:classification / Q000453:epidemiology / Q000523:psychology