Table 1 Diagram of activities to be carried out by participants at each visit

Procedures:

Planning day D

X

Smoking habit

X

Sociodemographic variables

X

Clinical history of comorbidities and risk factors associated with tobacco use

X

Basic physical examination

X

X

Lifestyles and habits

X

X

Pregnancy variables

X

Biochemical measures during pregnancy follow-up

X

Smoking habit follow-up*

X

X

X

Birth indicators

X

Newborn health indicators

X

Intervention:

Control group: 5A’s strategy

X

X

X

X

Intervention group: 5A’s strategy + access to App Tobbstop

X

X

X

X

Confirmation of smoking abstinence:

eCO test

X^$

X^$

Cotinine test in urine

X^$