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Completed

NCT Number: NCT01630356

Controlled Trial to Reduce Secondhand Smoke Exposure at Homes in Armenia

This study was designed to test the hypothesis whether a novel intervention that uses motivational interviewing along with immediate feedback and follow-up counseling calls is effective in educating the household members about the health hazards of smoking and secondhand smoke exposure and reducing children exposure to secondhand smoke at households in Armenia.

The study was a randomized control trial with two arms: intervention and control groups.

The sample population for the study included households with a non-smoking mother and at least one child 2 to 6 years of age residing with at least one daily smoker. The study team recruited the households through pediatrician's offices in polyclinics (primary healthcare facilities) utilizing multistage random sampling. Trained interviewers made two baseline (one week apart) and two 4-month follow-up household visits to conduct measurements, interviews and intervention. Measurements included surveys, air nicotine monitoring in homes and hair samples from children to assess changes in nicotine concentration over time.

SHS concentration was estimated by sampling vapor-phase nicotine using a filter badge treated with sodium bisulfate. Airborne nicotine monitors were used in all homes to measure SHS concentration at baseline and 4 month follow-up. At least one monitor was used in each home, preferably in the main room in which the family congregates.

Personal exposure to SHS in 2-6 years old children was assessed using biological samples of hair. A small sample of hair (approximately 30 - 50 strands, 2-3 cm) was cut near the hair root from the back of the scalp where there is the most uniform growth pattern between individuals which minimizes the variability of the results.

The intervention included an in-person counseling session with distribution of a tailored educational brochure and demonstration/feedback measurement of indoor PM2.5 (at second baseline visit); it also included one and two months follow-up counseling calls. The control group received only a brief educational leaflet on the hazards of second-hand smoke exposure.

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Key information

Conditions

Tobacco Use and Smoking Behavior Behavior Smoking Tobacco Use

Age range

2 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

College of Health Sciences, American University of Armenia

Yerevan, 0019, Armenia

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • At least one child 2 to 6 years of age
  • Non-smoking mother
  • At least one daily smoker
  • Child's exposed to second smoke of at least 1 cigarette per day

Exclusion criteria

  • Mother's pregnancy
  • Child's hair less than 2 cm in length after stretching out
  • Residing out of Yerevan

Treatment and study plan

in-person counseling

Behavioral

The interventionist provided in person counseling on eliminating child exposure to tobacco smoke to at least one daily smoker and a non-smoker mother in the household. The counseling session emphasized the following issues: a) importance of healthy environment at home, b) health dangers of smoking and exposure to secondhand smoke, c) why and how to quit smoking, and d) how to keep home air smoke-free.

Demonstration of PM2.5 Pollution

Device

The study team measured the particulate matter (PM2.5) in the air using the TSI AM 510 Aerosol SidePak to compare the quality of indoor air with outdoor air and demonstrate the effect of smoking on indoor air quality in the intervention households. After completing the Side Pack PM2.5 measurement, the interventionist immediately downloaded the data to a laptop to visualize the results through graphical presentation of the PM2.5 fluctuations to family members.

Follow-up Counseling Calls

Behavioral

Interventionists made two follow-up counseling calls to the primary contact in the intervention households, usually a non-smoking mother at one and two months after the in-person counseling session. These calls aimed at a) assessing the progress in meeting the goals set earlier, b) counseling on barriers to the change, and c) encouraging study participants to maintain the success or to set new goals. These calls also provided opportunity for the participants to ask questions or clarify issues

Printed Material

Behavioral

The intervention group families received the tailored and culturally adjusted educational brochure developed by the study team.

The control group received a brief educational leaflet on the hazards of SHS developed by the US Environmental Protection Agency.

Primary outcomes

  1. change in child's hair nicotine concentration

    Time frame: baseline and 4-month follow-up

  2. change in air nicotine concentration

    Time frame: baseline and 4-month follow-up

Secondary outcomes

  1. change in the respondents' knowledge on hazards of smoking and secondhand smoke

    Time frame: baseline and 4-month follow-up

  2. change in frequency of smoking in the presence of the child

    Time frame: baseline and 4-month follow-up

  3. change in household smoking restrictions

    Time frame: baseline and 4-month follow-up

Sponsors and collaborators

Lead sponsor

Johns Hopkins Bloomberg School of Public Health

Other

Collaborators

  • American University of Armenia

Registry information

Official study title

Monitoring Secondhand Smoke Exposure in Buildings in Armenia: Controlled Trial

Important dates

Study start
2010
Primary completion
2010
Study completion
2010
First posted
Jun 28, 2012
Registry last updated
Jun 28, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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