Changes in cigarette purchasing by fourth form students in New Zealand 1992-1997

To determine recent changes in cigarette purchasing behaviour of 14- and 15-year-old students in New Zealand.

Nationwide cross-sectional surveys of fourth form students in 85 schools in New Zealand by means of an anonymous self-administered questionnaire collected in November 1992 and in November 1997.

Analyses were restricted to 4198 out of 11 824 total students in 1992, and 4526 out of a total of 11 350 in 1997, who were current smokers aged 14 and 15 years. Self-purchasing of cigarettes decreased by 37% (95% CI: -40, -34) from 1992 to 1997, adjusting for age, sex and ethnicity, while acquiring cigarettes from other people increased. There was decreased purchasing from dairies (-6%; 95% CI: -8, -4) and supermarkets (-9%; 95% CI: -16, -1) but increases from other sources such as take-away shops, tobacconists and vending machines. From 1992 to 1997, weekly buying increased by 23% (95% CI 16, 32), students who were refused a sale increased by 153% (95% CI 139, 169) and students who had difficulty in buying increased by 324% (95% CI 276, 379). The latter were less likely to buy weekly than students who did not have difficulty (31.1% vs 41.4%). Students who smoked < or =5 cigarettes per week were 32% (95% CI 13, 53) more likely to have difficulty in buying than students smoking >20 per week.

These results indicate major changes in cigarette purchasing behaviour between 1992 and 1997, when there was increased enforcement against underage sales of tobacco.