Table 2 Thematic codes by frequency

 Mentions children as victims of SHS exposure

 Mentions that SHS is related to children’s health

 Mentions harms to foetuses from SHS during pregnancy

 Mentions exposure-duration or concentration of SHS as health risk

 Mentions later-life biological harms to children of SHS

 Mentions behavioural harms to children of SHS

 Mentions children as advocates against SHS

 Mentions third-hand smoking as a harm to children

 Mentions non-specified adults’ smoking behaviours

 Mentions parents’ awareness of SHS and behaviour modification

 Mentions poor parenting in relation to SHS and children

 Mentions parents as unaware or lacking education about SHS

 Mentions parental deprivation, lack of education or unhealthy lifestyles

 Mentions mothers’ smoking (exc. during pregnancy)

 Mentions parents’ awareness of SHS and no behaviour modification

 Mentions fathers’ smoking

 Mentions harms to mothers of smoking during pregnancy

 Mentions harms to children of SHS exposure in the home

 Mentions harms of SHS exposure in vehicles to children

 Mentions harms to children of SHS exposure in public places

 Mentions solutions for SHS other than legislation

 Mentions arguments supporting prohibition of smoking in vehicles carrying children

 Mentions arguments opposing prohibition of smoking in vehicles carrying children

 Mentions consequences for children of the smoking ban in public places

 Mentions a ban on smoking in public places to protect children from SHS

 Mentions other policies limit children’s exposure to SHS

 Mentions other countries’ policies to protect children from SHS

 Mentions anti-legislation stance (excluding smoke-free car legislation)

 Mentions the costs of SHS to society (economy, health, loss of life etc.)

 Mentions the vilification of, or and attacks on, smokers

 Mentions de-normalisation of smoking