---
title: Pricing Interventions Based on Energy Content in Restaurants
nct_id: NCT05818345
overall_status: TERMINATED
phase: NA
sponsor: University of Liverpool
study_type: INTERVENTIONAL
primary_condition: Obesity
countries: United Kingdom
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT05818345.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT05818345"
ct_last_update_post_date: 2023-07-21
last_seen_at: "2026-05-12T06:26:03.585Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Pricing Interventions Based on Energy Content in Restaurants

**Official Title:** Socioeconomic Position and the Effectiveness of a Pricing Intervention Based on Energy Content in Restaurants: a Real-world Experiment

**NCT ID:** [NCT05818345](https://clinicaltrials.gov/study/NCT05818345)

## Key Facts

- **Status:** TERMINATED
- **Why Stopped:** Restaurant has closed down
- **Phase:** NA
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 100
- **Lead Sponsor:** University of Liverpool
- **Collaborators:** European Research Council
- **Conditions:** Obesity, Healthy Diet, Eating Behavior
- **Start Date:** 2023-03-27
- **Completion Date:** 2023-07-01
- **CT.gov Last Update:** 2023-07-21

## Brief Summary

The goal of this clinical trial is to examine the impact of price decreases based on energy content in a full-service restaurant on immediate dietary consumption (in terms of kilocalories (kcals), sugar, fat, and salt intake) and dietary consumption the rest of the day following the intervention; and whether the intervention effects differ based on socioeconomic position (SEP).

Participants will be asked to visit the restaurant twice. At visit 1, participants will receive a control study menu with the existing pricing structure of the restaurant. At visit 2, participants will receive the same study menu with the pricing intervention introduced.

For comparative purposes a smaller subgroup of participants will receive the control menu at both visit 1 and 2 to allow the researchers to estimate whether any pre-post changes occur in the absence of a pricing intervention (and whether change differs by SEP).

## Eligibility

- **Minimum age:** 18 Years
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
Inclusion Criteria:

* UK resident, aged 18 and older, fluent in English, have an out-of-home meal at least once a month and have no dietary allergies

Exclusion Criteria:

* No further exclusion criteria as it is a real-world study
```

## Arms

- **Control** (NO_INTERVENTION) — Participants will receive a standard menu with the existing pricing structure of the restaurant
- **Pricing Intervention** (EXPERIMENTAL) — Participants will receive a menu where lower kcal dishes are discounted by 30%

## Interventions

- **Pricing intervention** (BEHAVIORAL) — Participants will be provided with a menu with manipulated prices for products with lower kilocalories

## Primary Outcomes

- **Total kilocalories (kcal) ordered at the restaurant** _(time frame: 1 hour)_ — The researchers will observe whether the total kcal ordered is different with a standard menu versus the menu with price manipulations
- **Total kcal consumed at the restaurant** _(time frame: 1 hour)_ — The researchers will observe whether the total kcal consumed (taking into account leftovers and food sharing) is different with a standard menu versus the menu with price manipulations

## Secondary Outcomes

- **Later kcal intake** _(time frame: 10 hours)_
- **Total sugar, fat and salt intake** _(time frame: 1 hour)_

## Locations (2)

- University of Liverpool, Liverpool, Merseyside, United Kingdom
- University of Liverpool, Liverpool, United Kingdom

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.whyStopped` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `outcomes.secondary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `sponsor.collaborators` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.university of liverpool|liverpool|merseyside|united kingdom` — added _(2026-05-12)_
- `locations.university of liverpool|liverpool||united kingdom` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT05818345.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT05818345*  
*This page is a raw mirror with no AI summary, no editorial enrichment, and no Parkinson's-specific filtering.*