Tob Control 1999;8:161-168 ( Summer )

Development of smoking by birth cohort in the adult population in eastern Finland 1972-97

Mikko Laaksonen, Antti Uutela, Erkki Vartiainen, Pekka Jousilahti, Satu Helakorpi, Pekka Puska

National Public Health Institute, Department of Epidemiology and Health Promotion, Helsinki, Finland

Correspondence to: M Laaksonen, National Public Health Institute, Department of Epidemiology and Health Promotion, Mannerheimintie 166, FIN-00300 Helsinki, Finland; Mikko.Laaksonen{at}ktl.fi

Received 24 April 1998 and in revised form 23 July 1998; Accepted 23 August 1998.

OBJECTIVETo analyse the dynamics of smoking prevalence, initiation, and cessation in relation to sex, age, birth cohort, study year, and educational level.
DESIGNSix independent cross-sectional population surveys repeated every five years between 1972 and 1997.
SETTINGThe provinces of North Karelia and Kuopio in eastern Finland.
SUBJECTSIndependent random samples of 18 088 men and 19 200 women aged 25-64 years. Those comprising the oldest birth cohort were born in 1913-17 and those in the youngest were born in 1968-72.
RESULTSAmong men the prevalence of smoking decreased over time, but the cohort effect observed in smoking initiation was obscured by the changes in smoking cessation. Differences between the educational categories were small. Among women the prevalence of smoking increased during the study period. This was mainly caused by the less highly educated, in whom smoking initiation clearly increased in successive birth cohorts, but a more moderate cohort effect was also present among the more highly educated women.
CONCLUSIONSIn men decreased initiation and increased cessation contributed to the downward trend in smoking prevalence, whereas among women, changes in smoking were mostly caused by augmented initiation in successive birth cohorts. During the study period educational inequalities in smoking widened, as the less highly educated came increasingly to form the smoking population.


Keywords: smoking prevalence; smoking initiation; smoking cessation; Finland

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© 1999 by Tobacco Control
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