Condition category
Mental and Behavioural Disorders
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting
Publication status

Plain English Summary

Background and study aims
In countries like UK, where other formal marketing channels are prohibited, the cigarette pack itself is the main way in which the tobacco industry can promote their products. Standardised (plain) packaging would require all cigarettes to be sold in packs with a standard pack shape, colour and method of opening, removing all branding and leaving only the brand name in a standard font and location. In December 2012, Australia was the first country in the world to introduce plain packaging and other countries are either considering, or are already following suit. Research shows that plain packaging makes the cigarette pack less appealing, both in terms of the pack itself and the taste and quality of the cigarettes they contain, prevents the use of misleading pack features and increases attention to health warnings in the pack. Research has also shown that using plain packs has increased the number of people who avoid smoking or stop smoking, particularly female daily smokers. This previous research was the first to test the impact of using plain cigarette packaging on attitudes to smoking, although it relies on self-report measures. Therefore, this project aims to see the effect that plain packaging of cigarettes has on actual smoking behaviour in a real-world setting over a 24-hour period.

Who can participate?
The study will recruit daily cigarette smokers from the general population who report smoking within one hour of waking and smoking between 5 and 20 cigarettes a day.

What does the study involve?
On two test days, spaced 48 hours apart, participants will complete paper-based questionnaires regarding their smoking status and attitudes to smoking. On test day 1, participants will be randomly allocated to receive either a branded or a standardised pack of cigarettes, which they will use for all of the following day. Smoking behaviour will be assessed using a hand-held smoking topography device. On test day 1, taste ratings of two cigarettes, one taken from a branded pack and one from a standardised pack of cigarettes will be completed by participants. On test day 2, participants will complete taste ratings for the cigarettes in the packs provided to them the previous day, paper-based questionnaires testing attitudes to smoking and their perceptions of the packs provided to them, and a computer task assessing the rewarding value of cigarettes.

What are the possible benefits and risks of participation?
Participants would not directly benefit from taking part in this research study. However, the information from this study may help governments worldwide to decide whether plain packaging will be an effective tobacco control measure. If effective, plain packaging may prevent many people from starting smoking, effectively saving millions of lives.

Where is the study run from?
The study will be run in the School of Experimental Psychology, University of Bristol, UK.

When is the study starting and how long is it expected to run for?
The study is expected to run from March 2013 to March 2014.

Who is funding the study?
The study is being organised by the University of Bristol and is funded in part by an Economic and Social Research Council (ESRC) (UK) PhD studentship.

Who is the main contact?
Ms Olivia Maynard

Trial website

Contact information



Primary contact

Prof Marcus Munafo


Contact details

School of Experimental Psychology
12a Priory Road
United Kingdom
+44 (0) 117 954 6841

Additional identifiers

EudraCT number number

Protocol/serial number


Study information

Scientific title

Standardised packaging of cigarettes and smoking behaviour: a randomised controlled study


Study hypothesis

We propose a randomised controlled trial to assess the impact of standardised packaging, as compared with branded packaging, on cigarette smoking behaviour over the course of a typical smoking day. We hypothesise that participants randomised to receive standardised packs will smoke fewer cigarettes and will have reduced exposure to cigarette smoke than those randomised to receive a branded pack. We also hypothesise that participants in the standardised pack condition will report more negative perceptions about the pack, the cigarettes and their smoking experience and more positive attitudes to standardised packaging legislation than those in the branded pack condition. Finally, we will investigate the effects of packaging on tobacco choice in a task where participants are required to choose between earning two distinct rewards: tobacco and chocolate. We hypothesise that there will be reduced tobacco choice amongst those participants assigned to the standardised packaging condition compared to those assigned to the branded pack condition. For all analyses, we will explore whether these effects are most pronounced among female smokers.

Ethics approval

Faculty of Science Human Research Ethics Committee, 5th February 2013, Reference: 310113607

Study design

Randomised controlled study

Primary study design


Secondary study design

Randomised controlled trial

Trial setting


Trial type

Quality of life

Patient information sheet


Daily cigarette smokers


Participants will be randomised to use for a whole day either a fully branded pack of UK cigarettes, or a standardised pack of Australian cigarettes.

Intervention type



Not Applicable

Drug names

Primary outcome measure

Smoking behaviour across a 24 hour period, defined as:
1. The number of cigarettes smoked (measured by self-report)
2. Average volume of smoke inhaled per cigarette (measured by smoking topography device)

Secondary outcome measures

1. Smoking urges: Questionnaire of Smoking Urges (QSU-Brief) (Test Day 1 and 2)
2. Motivation to quit smoking: Contemplation Ladder (Test Day 1 and 2)
3. Cigarette taste: (Test Day 1 and 2)
4. Experience of smoking from the cigarette pack: (Test Day 2)
5. Experience of smoking: (Test Day 2)
6. Attributes of the cigarette pack: (Test Day 2)
7. Perceptions of the on-packet health warning: (Test Day 2)
8. Behaviour changes: (Test Day 2)
9. Views on standardised packs: (Test Day 2)
10. Concurrent choice/transfer task: (Test Day 2)

Overall trial start date


Overall trial end date


Reason abandoned (if study stopped)


Participant inclusion criteria

1. Participants smoking daily (between five and 20 cigarettes per day and first smoking within one hour of waking)
2. Participants who predominantly smoke the specific brands of cigarettes available in the study (Marlboro Gold, Marlboro Red, Dunhill Grey, Dunhill Red, Dunhill Blue, Benson and Hedges Gold, Benson and Hedges Silver)
3. Participants aged between 18 and 40 years
4. English as first language or equivalent level of fluency
5. Able to give informed consent as judged by lead researcher

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. Participants not in good physical health
2. Participants not in good psychiatric health
3. Participants currently taking psychiatric medication (e.g., antidepressants)
4. Participants currently using illicit drugs (except cannabis)
5. Females who are pregnant
6. Participants planning on quitting smoking in the next month
7. Participants who in opinion of the lead researcher are not appropriate to participate
8. Participants who develop or engage in of any of the above during the course of the study would be removed from the final analysis

Recruitment start date


Recruitment end date



Countries of recruitment

United Kingdom

Trial participating centre

School of Experimental Psychology
United Kingdom

Sponsor information


University of Bristol (UK)

Sponsor details

Senate House
Tyndall Avenue
United Kingdom
+44 (0)117 928 8676

Sponsor type




Funder type

Research council

Funder name

The study is being organised by the University of Bristol and is funded in part by an Economic and Social Research Council PhD studentship. It is envisaged that this protocol will form part of a programme of work within the MRC/University of Bristol Integrative Epidemiology Unit, which is due to commence in June 2013. Full confirmation of the funding of this Unit is expected in May 2013. O.M.M., M.R.M. and L.B. are members of the UK Centre for Tobacco Control Studies, a UK Public Health Research Centre of Excellence. Funding from British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council and the UK National Institute for Health Research, under the auspices of the UK Clinical Research Collaboration, is gratefully acknowledged.

Alternative name(s)

Funding Body Type

Funding Body Subtype


Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Basic results (scientific)

Publication list

2014 protocol in
2015 results in

Publication citations

  1. Protocol

    Maynard OM, Leonards U, Attwood AS, Bauld L, Hogarth L, Munafò MR, Plain packaging of cigarettes and smoking behavior: study protocol for a randomized controlled study., Trials, 2014, 15, 252, doi: 10.1186/1745-6215-15-252.

Additional files

Editorial Notes

20/03/2020: Internal review. 05/12/2017: internal review. 17/11/2015: Publication reference added.