Hazard of smoking initiation by age among adolescents in Wuhan, China

Citation
Xg. Chen et al., Hazard of smoking initiation by age among adolescents in Wuhan, China, PREV MED, 32(5), 2001, pp. 437-445
Citations number
48
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Envirnomentale Medicine & Public Health
Journal title
PREVENTIVE MEDICINE
ISSN journal
0091-7435 → ACNP
Volume
32
Issue
5
Year of publication
2001
Pages
437 - 445
Database
ISI
SICI code
0091-7435(200105)32:5<437:HOSIBA>2.0.ZU;2-5
Abstract
Background. Knowledge about age of smoking initiation among adolescents in China is helpful for exploring cultural differences in adolescent smoking b ehavior and informative for global tobacco control. However, little has bee n documented on this issue. Method. Adolescents (6,473) attending grades 7, 8, and 9 completed the base line survey of a longitudinal, randomized smoking prevention trial, Data we re collected in classrooms with a paper-and-pencil questionnaire. A surviva l model was used in the statistical analysis. Results. The hazard of smoking initiation for boys showed a pattern previou sly observed in the United States: very low (<2%) before 7 years of age, in creasing rapidly after age 10, and peaking at 14-15 years of age. The hazar d for girls was below or around 1% until 12 years of age before it increase d. The hazard levels were similar for adolescents both in urban and in rura l areas, but higher for those in grade 7 than in grades 8 and 9. Conclusions. Chinese boys in Wuhan, China, experienced a hazard pattern of smoking initiation by age similar to those observed in the United States, w hile Chinese girls there experienced a rather low risk of smoking initiatio n. The hazard pattern suggests that the best time for smoking prevention is between 10 and 15 years of age. Adolescents in lower grades are at higher risk of early smoking initiation, suggesting a potential cohort effect in a dolescent smoking initiation in Wuhan, China. (C) 2001 American Health Foun dation and Academic Press.