Skip to content

Straight-sided glasses for alcohol reduction

Straight-sided glasses for alcohol reduction: a randomised crossover trial in public houses and bars

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN10456720
Enrollment
24
Registered
2019-12-05
Start date
2018-09-14
Completion date
Unknown
Last updated
2022-11-21

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

Conditions

Excessive alcohol consumption Not Applicable

Interventions

All participating venues (n = 24) will perform two intervention periods (A) and two control periods (B) in a random order. The random order for the four periods will be generated at the start of the s
2) BAAB
3) ABBA
or 4) ABAB. During the intervention condition, lager, ale and cider will be served in straight-sided pint and half pint glasses for two weeks. These glasses will be provided by the re

Sponsors

University of Bristol
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: The study will not use individual-level data; the unit of randomisation and data collection will be public houses and bars. The inclusion criteria for the public houses and bars are: 1. Sell more than 160 pints (i.e., 90 litres) of lager, ale and cider per week 2. Approximately 75% or more of their usual glasses for lager, ale and cider are curved (i.e., the width of the glass is not consistent from top to bottom) 3. Their licensing conditions will allow them to serve lager, ale and cider in straight-sided pint and half pint glasses during the intervention condition 4. Have an electronic point of sale (EPOS) till system (or an equivalent) to record itemised sales for all drinks, including lager, ale and cider

Exclusion criteria

Exclusion criteria: Public houses and bars not meeting the inclusion criteria

Design outcomes

Primary

MeasureTime frame
The mean volume (in litres) of draught lager, ale and cider (combined) sold weekly, measured using electronic point of sale (EPOS) till system data during the two intervention periods (i.e., straight-sided glassware) and the two control periods (i.e., usual glassware), with each period lasting two weeks

Secondary

MeasureTime frame
All secondary outcomes will be measured using EPOS till system data during the two intervention periods and the two control periods: 1. The mean volume (in litres) of lager sold weekly 2. The mean volume (in litres) of ale sold weekly 3. The mean volume (in litres) of cider sold weekly 4. The mean number of bottles of beer sold weekly 5. The mean volume (in litres) of wine sold weekly 6. The mean volume (in litres) of spirits sold weekly 7. The mean number of soft drinks sold weekly 8. The mean number of alcohol-free drinks (excluding soft drinks) sold weekly 9. The mean volume (in litres) of all alcoholic drinks sold weekly

Countries

England, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 25, 2026