Prenatal Visits

• Your doctor will explain what the ECHO study is and will provide you with additional information about taking part

• If you consent to taking part in the study, the doctor will ask you some questions about your smoking or vaping habits

• You will be asked to provide a urine sample and complete a carbon monoxide level, and a growth scan - find more details on prenatal visits here

Postnatal Visits - Up to 12 Months

• When your baby is born, a trained researcher will perform the Neonatal Behavioural Assessment Scale - information on the NBAS can be found here - and the PEAPOD - information can be found at the link

• You will be asked to complete some questionnaires about yourself, and your baby’s development

• At 6 months, you will be asked if you would like to take part in the Bayley Scale

• At 12 months, you will be asked questions about your baby using some questionnaires. If you have chosen to take part in the Bayley subgroup, a trained researcher will meet you for a short session

Final Visit - 24 Months

• At your final visit, we will invite you and your baby to complete the final questionnaires to measure growth and behaviour development