Smoking Cessation Programme in Workplaces in Hong Kong (Phase IV)

Health talk will provide information about hazards of tobacco (active smoking, second- and third-hand smoke), benefits of quitting smoking and methods to quit smoking.

Individual WhatsApp interactions last 3-month and consist of 2 parts. First part is regular WhatsApp message. The schedule will be adjusted according to the participants' quitting status. Second part is real-time discussion intervention based on participants' socio-demographic characteristics, smoking habit at baseline and updated smoking status obtained during online conversation. At 3-month follow-up, participants who are still smoking are encouraged to join an additional 1-month online group chat moderated by a smoking cessation counselor.

The intervention outcomes and participants' smoking status will be followed up regularly via telephone interviews (15 - 30 minutes).

Participants will receive regular text messages with similar frequency to those in the intervention group.