ClinicalTrials.gg
CompletedNCT02500238Updated Dec 28, 2018

Comparison of Smoking and Vaping in Families

An observational study in Smoking, sponsored by University of Florida. Completed at 2 sites in United States. Open to participants aged 6 Years to 17 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-12-28.

Sponsored by University of Florida · Observational

Study type
Observational
Model
Ecologic or community
Time perspective
Cross-sectional
Enrollment
44
Ages
6 Years to 17 Years
Sex
All
01

Study summary

Electronic cigarette use may be less harmful than cigarettes in adults, however, limited data exists examining passive electronic cigarette exposure and child health outcomes. The current study seeks to compare health-related outcomes among youth who reside with non-smokers, cigarette smokers, and electronic cigarette users. The investigators propose to conduct a small pilot study with 30 youth, ages 6-17 and a caregiver. Three groups of 10 parent-child dyads will be recruited: 1) control group: parents who are non-smokers/non-vapers, 2) smoking group: parents who are exclusive cigarette smokers, and 3) vaping group: parents who are exclusively ECIG users. Groups will be compared across the following variables: child lung function and biomarkers of nicotine.

Read the detailed description

The current study seeks to compare health-related outcomes among youth who reside with non-smokers, cigarette smokers, and electronic cigarette users.

Control Group: will consist of participants ages 6 - 17 who live in a home with adults who do not smoke. A brief breathing test will verify a non-smoker and/or are not around a certain amount of smoke in the environment (live with a smoker). The participant will be asked to complete a series of brief questionnaires that asks about basic demographic information, medical history, and that asks about their smoking history. The participant's will also be asked to complete two 5 minute breathing tests, provide a sample of saliva, a urine sample, and have their toe nails clipped.

Vaping Group: will consist of participants ages 6 -17 who live in a home with adults who currently use electronic cigarettes. A brief breathing test will verify a non-tobacco smoker and/or are not around a certain amount of smoke in the environment (live with a tobacco smoker). The participant will be asked to complete a series of brief questionnaires that asks about basic demographic information, smoking or vaping history and patterns of use, and medical history. The participant will be asked to complete two 5 minute breathing tests, provide a sample of saliva, a urine sample, and have their toe nails clipped.

Smoking Group: will consist of participants ages 6 - 17 who live in a home with adults who currently smoke cigarettes. Participants will then be asked to complete a series of brief questionnaires that asks about basic demographic information, smoking or vaping history and patterns of use, and medical history. The participant will also be asked to complete two 5 minute breathing tests, provide a sample of saliva, a urine sample, and have their toe nails clipped.

02

Conditions studied

  • Smoking

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03

In context

Smoking

325 studies on the registry are indexed under Smoking; 141 are open to participants now.

This study's enrollment of 44 is below the median of 114 across 69 observational studies indexed under Smoking.

Browse Smoking studies →

Lead sponsor

University of Florida is the lead sponsor of 1,285 studies on the registry; 199 are open to participants now.

Of its 177 completed or terminated interventional studies of FDA-regulated products, 141 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
6 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

In order to be included in the study, parents must: 1) be a legal guardian of a child between the ages of 6-17 (if caregiver has more > 1 child between 6-17 years; 2) be aged 18-65 years; and 3) be fluent in English. Additionally, the child must reside in the same home as the caregiver.

Eligibility criteria

Inclusion Criteria:

For the control group the caregiver must self-report:

  1. never smoking or not smoking for at least the past 12 months;
  2. that no one living in the home is a current smoker or has smoked in the home for the past 6 months; and
  3. have a breath carbon monoxide reading of ≤ 6ppm.

For the smoking group caregivers must:

  1. smoke at least 10 cigarettes per day for the past year;
  2. indicate that they smoke in the car or home ≥ 3 times per week; and
  3. do not use non-cigarette tobacco (e.g., cigars, chewing tobacco).

For the vaping group caregivers must:

  1. exclusively use EC for the past 3 months (no cigarette or other tobacco use); and
  2. no one living in the home is a current tobacco smoker or has smoked in the home for the past 6 months; and
  3. have a breath carbon monoxide reading of ≤ 6ppm.
05

Study design

Observational model
Ecologic or community
Time perspective
Cross-sectional
Enrollment
44 participants (actual)
Patient registry
No
Biospecimen retention
Samples without dna

Groups and cohorts

  • Control

    This group will provide 2 breath carbon monoxide (reading of ≤ 6 parts per million) and a saliva sample, urine sample, and toe nail clippings will be taken from this group.

    Other: Saliva sample · Other: Urine Sample · Other: Toe nail clippings · Other: Breath carbon monoxide test

  • Smoking

    This group will provide 1 breath carbon monoxide test (reading of ≤ 6 parts per million) and a saliva sample, urine sample, and toe nail clippings.

    Other: Saliva sample · Other: Urine Sample · Other: Toe nail clippings · Other: Breath carbon monoxide test

  • Vaping

    This group will provide 2 breath carbon monoxide test (reading of ≤ 6 parts per million) and a saliva sample, urine sample, and toe nail clippings.

    Other: Saliva sample · Other: Urine Sample · Other: Toe nail clippings · Other: Breath carbon monoxide test

Interventions

  • OtherSaliva sample

    All participants will provide a saliva sample.

  • OtherUrine Sample

    All participants will provide a urine sample.

  • OtherToe nail clippings

    All participants will provide toe nail clippings.

  • OtherBreath carbon monoxide test

    All participants will provide breath carbon monoxide tests

06

What researchers measure

Primary outcomes

  1. Assessment of lung function

    Child lung function will be measured at the study visit. Forced expiratory volume in the first second will be assessed.

    Time frame: Day 1

Secondary outcomes

  1. Assessment of cotinine in saliva

    Child saliva samples will be collected at the study visit. Samples will be assessed for cotinine levels.

    Time frame: Day 1

  2. Assessment of cotinine in urine

    Child urine samples will be collected at the study visit. Samples will be assessed for cotinine levels.

    Time frame: Day 1

  3. Assessment of nicotine in toenail clippings

    Child toenail samples will collected at the study visit. Samples will be assessed for nicotine levels.

    Time frame: Day 1

  4. Assessment of cotinine in toenail clippings

    Child toenail samples will be collected at the study visit. Samples will be assessed for cotinine levels.

    Time frame: Day 1

  5. Assessment of tobacco specific nitrosamine in toenail clippings

    Child toenail samples will be collected at the study visit. Samples will be assessed for NNAL levels.

    Time frame: Day 1

  6. Assessment of tobacco specific nitrosamine in urine

    Child urine samples will be collected at the study visit. Samples will be assessed for NNAL levels.

    Time frame: Day 1

07

Study locations

2 sites
  • Uf Ctsi Crc
    Gainesville, Florida 32610, United States
  • OUHSC
    Oklahoma City, Oklahoma 73104, United States
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Nov 2015, a primary completion of Nov 2016 and a completion of Nov 2016. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 8, 2015
First posted
Jul 16, 2015
Start
Nov 2015
Primary completionActual
Nov 2016
CompletionActual
Nov 2016
Last update
Dec 28, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 28, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02500238
Responsible party
Sponsor
First posted
Jul 16, 2015
Start date
Nov 2015
Primary completion
Nov 2016
Completion
Nov 2016
Last update
Dec 28, 2018

Study contacts

David A Fedele, Ph.D.
principal investigator · University of Florida

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2018. You cannot join it, but the record below documents what was studied.

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