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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Coke Zero Arm | Experimental | The participant will be given a Coke Zero before each night-call duty for consumption. |
|
| Coke Arm | Active Comparator | The participant will be given a Coke before each night-call duty for consumption. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Coke Zero | Other | Coca-Cola Zero Sugar drink will be given. |
| |
| 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 |
| 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 |
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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
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| Name | Affiliation | Role |
|---|---|---|
| Yu Heng Kwan, MD, PhD | SingHealth Internal Medicine Residency | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Singapore General Hospital | Singapore | 169608 | Singapore |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 18392313 | Background | Tan MH, Lee Z, Ng B, Sim ES, Chua YY, Tien M, Ooi CJ. The Tao of bao: a randomised controlled trial examining the effect of steamed bun consumption on night-call inpatient course and mortality. Ann Acad Med Singap. 2008 Mar;37(3):255-3. |
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There is currently no plan to share IPD to other researchers.
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| Type | Date | Date Unknown |
|---|---|---|
| Release | Aug 9, 2024 | |
| Reset | Nov 8, 2024 |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Aug 9, 2024 | Nov 8, 2024 |
| ID | Term |
|---|---|
| D003077 | Coke |
| ID | Term |
|---|---|
| D003031 | Coal |
| D005579 | Fossil Fuels |
| D045424 | Complex Mixtures |
| D004736 | Energy-Generating Resources |
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Two groups of night-call staffs will be receiving different interventions.
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Participants will not be aware of the type of drink they receive.
| Coke |
| Other |
Coca-Cola drink will be given. |
|
| 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 |
| D004777 |
| Environment |
| D004778 | Environment and Public Health |