Coca-Cola Zero (®) Consumption on Night-call Inpatient Course and Mortality

Study Overview
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Brief Summary
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The purpose of this study is to determine the effect of coke zero consumption by night-call staffs on inpatient admission and mortality, and total sleep duration during the night-call duty. Coke Zero is a soft drink that is widely popular within the medical community, carrying the meaning of zero, which to some, signifies the minimal level of morbidity and mortality that will occupy the on-call the night staffs.

Detailed Description
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Previous studies have demonstrated that superstitions among the medical community have been prevalent and staffs regularly engaged in conforming to the superstitions because of their associations with workload, inpatient admissions and mortality. As such, the current study aims to evaluate whether the consumption of Coke Zero has an effects on patient admissions and mortality and the eventfulness of the night-call duties.

Official Title
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Coke Zero for the Zero: A Study Examining the Effect of Coke Zero Consumption on Night Call Inpatient Course and Mortality

Conditions
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Mortality

Intervention / Treatment
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* Other: Coke Zero
* Other: Coke


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: • Doctors on the night-call roster at Singapore General Hospital Exclusion Criteria • Other allied health professionals or medical students
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Two groups of night-call staffs will be receiving different interventions.
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Coke Zero Arm<br>The participant will be given a Coke Zero before each night-call duty for consumption. | Other: Coke Zero<br>* Coca-Cola Zero Sugar drink will be given.<br>|
| Active Comparator: Coke Arm<br>The participant will be given a Coke before each night-call duty for consumption. | Other: Coke<br>* Coca-Cola drink will be given.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Inpatient Mortality | For patients assigned under the designated night-call doctor's care | The designated night-call doctor's shift from 5PM to 8AM the next day | 
| Inpatient general ward admission | For patients assigned under the designated night-call doctor's care | The designated night-call doctor's shift from 5PM to 8AM the next day | 
| Inpatient High Dependency/Intensive Care Unit Admission | For patients assigned under the designated night-call doctor's care | The designated night-call doctor's shift from 5PM to 8AM the next day | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Hours of sleep during the night-call | For the designated night-call doctor's care | The designated night-call doctor's shift from 5PM to 8AM the next day | 
| Hours of shift during the night-call | For the designated night-call doctor's care | The designated night-call doctor's shift from 5PM to 8AM the next day | 
| Number of steps walked by the night-call staff during the night-call | For the designated night-call doctor's care | The designated night-call doctor's shift from 5PM to 8AM the next day | 
| Level of alertness of the night-call staff after the night-call | Measured using the Karolinska Sleepiness Scale and the Epworth Sleepiness Scale | The designated night-call doctor's shift from 5PM to 8AM the next day | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Coke Zero, Night-call Staffs, Inpatient Admission, Inpatient Course, Inpatient Mortality