The effect of educational intervention based on the TPB on reducing the consumption of plastic bags

Determining the effect of an intervention based on the Theory of Planned Behavior on promoting environmentally friendly behavior (Reducing Plastic Bag Consumption) in Health Volunteers in Zanjan

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20220430054703N1

Enrollment

110

Registered

2022-05-03

Start date

2022-05-31

Completion date

Unknown

Last updated

2022-05-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

The subject of study is not a disease.

Interventions

Intervention 1: Intervention group: At first, people who meet the inclusion criteria will be selected to participate in the study. After selecting these people, the purpose of the study will be explai

Eligibility

Sex/Gender

Female

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Health Volunteer Resident of Zanjan city Have at least one year of experience as a health volunteer

Exclusion criteria

Exclusion criteria: Reluctance to continue cooperation for any reason Failure to attend more than one training session Intention to move during the intervention Failure to complete questionnaires before and after the intervention.

Design outcomes

Primary

Measure	Time frame
Environmental knowledge. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Attitude towards the behavior. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Subjective norm. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Perceived behavioral control. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Behavioral intention. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.	—

Measure

Time frame

Environmental knowledge. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Attitude towards the behavior. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Subjective norm. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Perceived behavioral control. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.;Behavioral intention. Timepoint: Before and 3 months after the educational intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.

—

Secondary

Measure	Time frame
Reduce the daily consumption of plastic bags. Timepoint: Before and 3 months after the intervention. Method of measurement: Researcher made questionnaire based on the Theory of Planned Behavior.	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactSeyedeh Somayeh Mousavi

Zanjan University of Medical Sciences

Sm8083667@gmail.com+98 24 3378 1300

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026