Covid19
Conditions
Keywords
Face masks, Infection control, Behavioral intervention
Brief summary
The investigators will carry out a randomised trial of free face mask distribution in Stovner District, Oslo, Norway. Ten grocery stores will serve as study sites. Over three weeks the stores will be randomised daily to having corona hosts outside their entrance, handing out face masks to customers. The investigators will compare the proportion of customers who wear face masks as they enter the store in stores with or without face mask distribution.
Interventions
BEHAVIORALDistribution of free face masks
Corona hosts will be placed at the entrance of the intervention stores, and hand out face masks to customers entering the store.
Sponsors
Stovner District, City of Oslo, Norway
Norwegian Institute of Public Health
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
NONE
Masking description
The analyst will receive a dataset in a format which makes it impossible for him/her to know which of the two arms in the dataset represents intervention or control.
Intervention model description
The team members from the Stovner district-administration will send a numbered list to Norwegian Institute of Public Health-team, with the names of the stores. The ordering of the stores will define the numbers used to represent each store in the randomisation process. Using Stata software, we will carry out 13 separate and independent randomisations, each assigning the intervention to half the included stores. An additional randomisation to the treatment or control group will be carried out for a marginal store each day in the event of an odd number of stores. Unless it proves too logistically cumbersome, we will also randomise the corona hosts, i.e. the store they are allocated to will be decided through randomisation.
Eligibility
Sex/Gender
ALL
Age
12 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
All grocery stores in the Stovner district are eligible as long as they have not, or only sporadically, had free distribution of face masks previously. At the customer level, we will only include those 12 years or older (age based on the outcome assessor's judgement).
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Face mask use | Through study completion, 3 weeks. | Proportion of customers wearing a face mask |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Correct use of face masks | Through study completion, 3 weeks | Proportion of customers wearing a face mask correctly (i.e. covering mouth and nose) |
Countries
Norway
Outcome results
None listed