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Effect of COVID-19 Lockdown on Alcohol and Tobacco Use in Two Chilean Universities

Effect of COVID-19 Lockdown on Alcohol and Tobacco Use in Two Chilean Universities: a Difference-in-difference Analysis

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05069090
Enrollment
1038
Registered
2021-10-06
Start date
2020-06-03
Completion date
2021-04-30
Last updated
2021-10-14

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

Conditions

COVID-19, SARS-CoV-2 Infection

Keywords

Alcohol Drinking, Tobacco use, SARS-CoV-2, COVID-19, Epidemiology, Cohort Studies

Brief summary

This is a longitudinal study of participants from two university communities in Chile. The primary objective is to examine the effect of a regional lockdown on alcohol and tobacco use, using a difference-in-difference analysis to obtain causal estimates of these COVID-19 policies.

Detailed description

The COVID-19 pandemic is spreading worldwide. Countries have adopted public health and social measures that, together with a direct effect of the pandemic, can affect alcohol and tobacco use. The most stringent measures are lockdowns and curfews that include statutory restrictions on people's mobility. Research to date has shown mixed effects of the COVID-19 pandemic and lockdowns on alcohol and tobacco use. Importantly, previous studies have not been able to differentiate the effects of the pandemic itself with those from lockdown and curfew policies. They have also been restricted to countries in Europe, the United States, Australia and New Zealand. The study will advance prior knowledge by providing evidence from a country in Latin America, one of the worst-hit regions worldwide. Latin America accounts for 8.4% of the global population, but 20.3% of the total SARS-COV2 cases and 30.2% of the COVID-19 deaths to date. In addition, the study will exploit the variation in lockdown policies in two regions in Chile to disentangle the effects of the COVID-19 pandemic with those from a lockdown. The aim of the study is to examine the effect of a regional lockdown on alcohol use in two university populations in the Araucanía and Coquimbo regions in Chile. The investigators will use a difference-in-difference analysis to obtain causal estimates of these COVID-19 policies.

Interventions

BEHAVIORALLockdown and other social distancing measures

During the study period, the Chilean Ministry of Health established a five-step process for social distancing measures. These ranged from full lockdown (step 1) to almost no restrictions (step 5). Even under full lockdown, citizens were able to obtain permits for essential activities. Citizens had a maximum of two permits per week and were obtained in a virtual station of the Chilean Police Force (Carabineros de Chile).

Sponsors

Universidad Católica del Norte
CollaboratorOTHER
Universidad de La Frontera
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* People with study rights either at the undergraduate and postgraduate levels by July 27, 2020 at the Universidad de la Frontera or Universidad Católica del Norte; OR * Workers with a full-time or part-time contract with either University, including academics, administrative and assistant personnel; AND * Having an email registered in the Human Resource Office of each university

Exclusion criteria

* People without valid study rights at either university * People without a working contract with the university * Not having an email registered at the Human Resource Office

Design outcomes

Primary

MeasureTime frameDescription
Weekly grams of alcohol useLast weekConsumption of alcohol during the past week measured in grams of pure alcohol
Frequency of heavy episodic drinking in the past monthLast 30 daysFrequency of consumption of five or more drinks on a single occasion during the past 30 days \[response range 0 to 10 and more times\]
Quantity of cigarettes per dayLast weekAverage daily consumption of cigarettes during the last week

Countries

Chile

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 13, 2026