Evidence map›Paper›PMID 32055406›Full record

ArticlePilot and feasibility studies2020

Impact of bottle size on in-home consumption of wine: feasibility and acceptability randomised cross-over study.

Eleni Mantzari, Catherine Galloway, Gareth Hollands, Rachel Pechey, Zorana Zupan, Mark Pilling, Theresa Marteau

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Article in Pilot and feasibility studies, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Eleni MantzariBehaviour and Health Research Unit, University of Cambridge, Forvie Site, Robinson Way, Cambridge, CB2 0SR UK.
Catherine GallowayBehaviour and Health Research Unit, University of Cambridge, Forvie Site, Robinson Way, Cambridge, CB2 0SR UK.
Gareth HollandsBehaviour and Health Research Unit, University of Cambridge, Forvie Site, Robinson Way, Cambridge, CB2 0SR UK.
Rachel PecheyBehaviour and Health Research Unit, University of Cambridge, Forvie Site, Robinson Way, Cambridge, CB2 0SR UK.
Zorana ZupanBehaviour and Health Research Unit, University of Cambridge, Forvie Site, Robinson Way, Cambridge, CB2 0SR UK.
Mark PillingBehaviour and Health Research Unit, University of Cambridge, Forvie Site, Robinson Way, Cambridge, CB2 0SR UK.
Theresa MarteauBehaviour and Health Research Unit, University of Cambridge, Forvie Site, Robinson Way, Cambridge, CB2 0SR UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundReducing alcohol consumption across populations would prevent many non-communicable diseases. Large packages increase food and non-alcoholic drink consumption and large glasses increase wine consumption. Smaller bottles may reduce alcohol consumption but their impact is uncertain. This study aims to (i) explore the feasibility and acceptability of conducting a large-scale randomised study to assess the impact of bottle size on in-home wine consumption and (ii) estimate the effect size and variance of the intervention on consumption to inform the design of future studies.

methodsCross-over randomised study in which 16 households in Cambridge, England, consuming at least two 750-ml bottles of wine each week, received a pre-set volume of wine biweekly for 4 weeks, in 750-ml and 375-ml bottles, in random order. Consumption was assessed by recording the number of empty and partially full bottles at the end of each biweekly period. At the end of the study, household representatives were interviewed about their experiences of participating in the study.

resultsThe study procedures proved feasible. Comparable to similar trials, 14% of identified eligible households (18/125) consented to participate in the study. Attrition between consent and study completion was 11% (2/18) and 0% between study periods and 13% of households (2/16) correctly identified the study aim. The study procedures were considered acceptable. After adjusting for guest and out-of-home consumption, the difference in consumption between the 750-ml (3385.2 ml; SD = 1698.5) and 375-ml bottles (3376.7 ml; SD = 1719.0) was 8.4 ml (SD = 1235.4; 95%CI - 596.9, 613.8). Results suggest a possible order effect, with households receiving the 375-ml bottles first consuming more wine out of the 750-ml bottles and vice versa. This might also reflect an increase in consumption with study duration. Households receiving the 375-ml bottles first (6315.9 ml; SD = 3293.5) also drank less wine overall than those receiving the 750-ml bottles first (7335.4 ml; SD = 3735.4). DISCUSSION: The findings support the feasibility and acceptability of running a large-scale randomised study to assess the impact of bottle size on in-home wine consumption. Due to the heterogeneous patterning of results, a future study will be powered using the variance observed in the current study to detect a meaningful reduction of 250 ml of wine when consumed from smaller compared with larger bottles.

trial registrationOpen Science Framework (OSF): rmk43; May 23, 2017.

Indexed as

AlcoholBottle sizeConsumptionPortion sizeWine

Identifiers

PMID32055406
PMCPMC7011263

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.