Age of tobacco, nicotine and cannabis use initiation in Switzerland: a sequence analysis among adolescents and young adults.

Background: To explore at what age youth start using tobacco and/or nicotine products, which product is used first, product initiation sequences, and whether some socio-demographic characteristics are associated with substance use initiation.

Methods: Data were collected from an online questionnaire disseminated through social media and professional partners, targeting youth aged 14-25 in French-speaking Switzerland in August 2022. The final sample included 1362 participants.

[Development and application of the passive smoking monitor MoNIC].

A passive sampling device, called Monitor of NICotine (MoNIC), was constructed and evaluated by the laboratory of the Institute for Work and Health to determine nicotine in Environmental Tobacco Smoke (ETS). To support a large campaign on the subject of passive smoking, the CIPRET Valais gracefully distributed more than 1500 MoNIC badges to the Swiss population in order to measure ETS. Non-stimulated saliva was also collected to determine nicotine/cotinine levels of participating volunteers.