Effects of New Pictorial Cigarette Pack Warnings on Vietnamese Smokers' Perceptions and Smoking Behaviors

NCT ID: NCT06818786

Last Updated: 2025-02-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

1010 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-08-24

Study Completion Date

2024-10-08

Brief Summary

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This proposed study will assess the effects of different scenarios of PHW policies on smokers' reactions to warnings, attitudes and beliefs, behavioral intentions, and quitting behaviors, with specific aims: 1) to assess the impact of new PHWs covering 50% of cigarette packs, 2) to assess the impact of new larger PHWs covering 85% of cigarette packs, 3) to assess the impact of incorporating quitline information on cigarette packs, and 4) to assess the impact of plain packaging. These aims will be achieved by conducting a five-arm RCT among 1000 adult smokers (n=200 per arm). It includes four intervention groups: 1) branded pack with a new set of 6 PHWs covering 50% of cigarette packs without quitline information, 2) branded pack with a new set of 6 PHWs covering 85% of cigarette packs without quitline information, 3) branded pack with a new set of 6 PHWs covering 85% of cigarette packs with quitline information, and 4) plain pack with a new set of 6 PHWs covering 85% of cigarette packs with quitline information. A control group will use branded packs with the current set of 6 PHWs, covering 50% of cigarette packs without quitline information.

Given that the pictorial health warnings (PHW) on cigarette packs need to be renewed, this project will provide highly policy-relevant and timely scientific evidence on the effect of new PHW policies in Vietnam. Additionally, this project would be the first to address the research gap in understanding the effect of adding quitline information to PHWs-a gap not explored in previous studies. With the potential for significant outcomes, the findings will help Vietnamese policymakers enact stronger PHW policies in upcoming years, aiming to increase perceived harms of smoking and foster smoking cessation, ultimately saving millions of lives in Vietnam

Detailed Description

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Conditions

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Pictorial Health Warnings

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Branded pack with a new set of 6 PHWs covering 50% of cigarette packs without quitline information

Group Type EXPERIMENTAL

Branded pack with new PHWs covering 50% of the pack without quitline information

Intervention Type OTHER

Participants received and were required to view six images depicting a branded cigarette pack with a new set of six pictorial health warnings covering 50% of the pack, without quitline information.

Branded pack with a new set of 6 PHWs covering 85% of cigarette packs without quitline information

Group Type EXPERIMENTAL

Branded pack with new PHWs covering 85% of the pack with quitline information

Intervention Type OTHER

Participants received and were required to view six images depicting a branded cigarette pack with a new set of six pictorial health warnings covering 85% of the pack, with quitline information

Branded pack with a new set of 6 PHWs covering 85% of cigarette packs with quitline information

Group Type EXPERIMENTAL

Branded pack with new PHWs covering 85% of the pack without quitline information

Intervention Type OTHER

Participants received and were required to view six images depicting a branded cigarette pack with a new set of six pictorial health warnings covering 85% of the pack, without quitline information.

Plain pack with new PHWs covering 85% of the pack with quitline information

Group Type EXPERIMENTAL

Plain pack with new PHWs covering 85% of the pack with quitline information

Intervention Type OTHER

Participants received and were required to view six images depicting a plain cigarette pack with a new set of six pictorial health warnings covering 85% of the pack, with quitline information

Branded pack with the current set of PHWs covering 50% of the pack without quitline information

Group Type ACTIVE_COMPARATOR

Branded pack with the current set of PHWs covering 50% of the pack without quitline information

Intervention Type OTHER

Participants received and were required to view 6 images depicting a branded cigarette pack with a current set of 6 pictorial health warnings covering 50% of cigarette packs without quitline information (It is the current pictorial health warnings implemented in Vietnam)

Interventions

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Branded pack with new PHWs covering 50% of the pack without quitline information

Participants received and were required to view six images depicting a branded cigarette pack with a new set of six pictorial health warnings covering 50% of the pack, without quitline information.

Intervention Type OTHER

Branded pack with new PHWs covering 85% of the pack without quitline information

Participants received and were required to view six images depicting a branded cigarette pack with a new set of six pictorial health warnings covering 85% of the pack, without quitline information.

Intervention Type OTHER

Branded pack with new PHWs covering 85% of the pack with quitline information

Participants received and were required to view six images depicting a branded cigarette pack with a new set of six pictorial health warnings covering 85% of the pack, with quitline information

Intervention Type OTHER

Plain pack with new PHWs covering 85% of the pack with quitline information

Participants received and were required to view six images depicting a plain cigarette pack with a new set of six pictorial health warnings covering 85% of the pack, with quitline information

Intervention Type OTHER

Branded pack with the current set of PHWs covering 50% of the pack without quitline information

Participants received and were required to view 6 images depicting a branded cigarette pack with a current set of 6 pictorial health warnings covering 50% of cigarette packs without quitline information (It is the current pictorial health warnings implemented in Vietnam)

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* having smoked at least 100 cigarettes in their lifetime and currently smoking
* aged 18 or older
* fluent in Vietnamese
* smartphone users

Exclusion Criteria

\-
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hanoi University of Public Health

OTHER

Sponsor Role collaborator

Georgia State University

OTHER

Sponsor Role lead

Responsible Party

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Thi Phuong Thao Tran

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Hanoi University of Public Health

Hanoi, , Vietnam

Site Status

Countries

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Vietnam

Other Identifiers

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H25022

Identifier Type: -

Identifier Source: org_study_id

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