Can a brief chat and an app help millions quit tobacco?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Practitioner inclusion criteria: * targeted workers from targeted settings * sufficient language proficiency in English and/or Hindi to attend the training and take surveys * has not received prior in-depth LifeFirst training * can recruit 10-60 tobacco users in a six-month period * works in a setting in which brief advice can be added to the workflow * delivers care in Greater Mumbai and expects to do so for one year post-training * can secure institutional signoff to participate and utilize the program in practice * has an Android smartphone Patient inclusion criteria: * user of smokeless and / or smoked tobacco * age 18 and over * attending the practice of an enrolled practitioner * has a mobile phone (required for data collection) * does not have another member of their household participating in the study * is not currently participating in any tobacco cessation program (such as through the National Quitline) Exclusion Criteria: Practitioner exclusion criteria: * does not work in one of the targeted settings * works in one of the targeted settings but is not a targeted worker * does not have sufficient language proficiency in English and/or Hindi to attend the training and take surveys * has received prior in-depth LifeFirst training * cannot recruit 36 tobacco users in a six-month period * does not work in a setting in which brief advice can be added to the workflow * does not deliver care in Greater Mumbai * delivers care in Greater Mumbai but does not expect to do so for one year post-training * cannot secure institutional signoff to participate and utilize the program in practice * does not have an Android smartphone Patient exclusion criteria: * not a user of smokeless or smoked tobacco * under age 18 * does not attend the practice of an enrolled practitioner * does not have a mobile phone * has another member of their household participating in the study * is currently participating in any tobacco cessation program (such as through the National Quitline)