Adolescent 1 Adult 1 Age of Onset 1 British Cohort Study 1 British citizen 1 Child 1 Child, Preschool 1 Childhood tobacco use Cohort declines in childhood tobacco use 1 Female 1 Follow-Up Studies 1 Humans 1 Male 1 Middle Aged 1 Millennium Cohort Study 1 Parent-Child Relations 1 Prospective Studies 1 Residence Characteristics 1 Risk Factors 1 Social inequality and childhood tobacco use 1 Socioeconomic Factors 1 Tobacco Smoking 1 United Kingdom 1 Young Adult 1 adolescence 1 adolescent 1 adult 1 adverse event 1 article 1 child 1