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Contact the study team using the details below to take part. If there are no contact details below please ask your doctor in the first instance.

Contact Information:

Allison Ford
a.j.ford@stir.ac.uk


Allison Ford
a.j.ford@stir.ac.uk


Grace Lewis
g.m.lewis@stir.ac.uk


Study Location:

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Be Part of Research - Trial Details - Vaping in pregnancy and its association with birth outcomes (VIPS)

Vaping in pregnancy and its association with birth outcomes (VIPS)

Recruiting

Open to: Female

Age: 16 - N/A

Medical Conditions

Fetus and newborn affected by maternal factors and by complications of pregnancy, labour and delivery
Persons encountering health services in circumstances related to reproduction


This information is provided directly by researchers, and we recognise that it isn't always easy to understand. We are working with researchers to improve the accessibility of this information. In some summaries, you may come across links to external websites. These websites will have more information to help you better understand the study.


Vaping is popular and, in the UK, is currently recommended to pregnant women who smoke, as a way to help them stop smoking, where other options have not helped. However, there is little good quality evidence on the effects of vaping in pregnancy, and how the effects compare to those of smoking or neither smoking nor vaping. The research aim is to compare the birth outcomes (primarily birth weight and preterm birth) among pregnant women who either-
1. Exclusively smoke cigarettes
2. Exclusively vape
3. Have never smoked nor vaped.
Pregnant women attending Greater Manchester antenatal services will be invited to participate. If women agree and consent, they will be asked to complete 3 short questionnaires at 3 time points during their pregnancy (14 weeks or under; around 24 weeks; and around 36 weeks). The questionnaires will ask about use of vapes, other tobacco and nicotine products and alcohol, currently and in recent months. We will ask questions about the women’s demographic backgrounds to help us understand differences in birth outcomes in different sub-groups. We will verify group assignment to the above three groups based on tests results routinely collected in clinic (exhaled carbon monoxide). The only other test researchers will ask participants to do at home will be a simple saliva test to verify exclusive vaping/smoking abstinence. This will be requested in 10% of those in both groups 2 and 3. The saliva test can be done by women themselves at home, and they will be provided with a stamped-addressed envelope to return the sample (using a unique identifying number) to a laboratory. We will compare birth outcomes by product (vapes/cigarettes/no use) use.
This study will also help us to understand the most suitable ways to monitor vaping amongst pregnant women, to help us collect longer-term information about vaping behaviour and outcomes.

Start dates may differ between countries and research sites. The research team are responsible for keeping the information up-to-date.  

The recruitment start and end dates are as follows:

06 Aug 2025 30 Sep 2026

Observational

Observational type: Cohort study;



You can take part if:



You may not be able to take part if:


• Those participating in other research studies that may directly conflict with this study • Women under the age of 16 years • Those unable to read or understand English • Those unwilling or unable to provide informed consent • Those both smoking and using vapes (i.e., dual users) • Those reporting nicotine or tobacco product use or never use that is not consistent with their exhaled carbon monoxide results • Those who have used nicotine or tobacco products in the past and now do not use either.


Below are the locations for where you can take part in the trial. Please note that not all sites may be open.

  • Royal Oldham Hospital
    Rochdale Road
    Oldham
    Lancashire
    OL1 2JH
  • Tameside General Hospital
    Fountain Street
    Ashton-under-lyne
    Lancashire
    OL6 9RW
  • Blackpool Victoria Hospital
    Whinney Heys Road
    Blackpool
    Lancashire
    FY3 8NR
  • Royal Bolton Hospital
    Minerva Road
    farnworth
    Bolton
    Lancashire
    BL4 0JR

Grace Lewis
g.m.lewis@stir.ac.uk


Allison Ford
a.j.ford@stir.ac.uk


Allison Ford
a.j.ford@stir.ac.uk



The study is sponsored by University of Stirling and funded by NIHR Central Commissioning Facility (CCF) .




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for Trial ID: CPMS 66222

Last updated 12 January 2026

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