Behavioural interventions to increase test uptake and self-isolation compliance during Covid-19 community test pilots in the Netherlands: four population-level randomised control trials.

Recruitment & Eligibility

Status: Recruiting

Sex: Not specified

Target Recruitment: 25644

Inclusion Criteria

Testing trials: One invitation letter per household was sent to all residents of Dronten and Bunschoten. In the invitation letter, all residents aged 12 and above in Dronten, and aged 6 and above in Bunschoten were invited to partake in the community-wide testing pilot.

Self-Isolation support trials: All residents of Dronten and Bunschoten with a positive test result for covid-19 received care as usual during the six week pilot period, and were invited to partake in the trial. In Bunschoten, close patient contacts at risk of Covid-19, were also invited to partake. Intervention materials developed for the trial only offered to patients aged 16 and above due to legal requirements. In case of patients under the age of 16, intervention materials were offered to the household. Intervention materials were, under those circumstances, also addressed ‘parent(s) of’ the minor in the household. Only participants with insufficient written and spoken knowledge of the Dutch language were unable to participate in the trials.

Exclusion Criteria

Testing trials: No exclusion applied to participation, but data was only shared for residents aged 12 and above in Bunschoten. This was because a different set of methods was used to test participants aged 6-12 for Covid-19.
We will only exclude a subject from which the district the subject is living or the condition the subject is assigned to is missing. If the condition a subject belongs to, or the district a subject lives in is missing, this subject will be excluded from the analysis.

Self-Isolation support trials: No exclusions were applied to receive self-isolation care as usual.

Study & Design

Study Type: Interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Test uptake: <br> a) DV1: The number of residents, per neighborhood that tested for Covid-19 during the 6-week pilot period. <br> b) DV2: The number of times a person, per neighborhood got tested for Covid-19 during the 6-week pilot period. <br><br>Self-Isolation support and adherence behaviour: <br> a) DV1: The contact times with a local support service (Bunschoten only)<br> b) DV2: The number of self-reported times a participant left their residence during the isolation or quarantine period (excluding number of times for medical reasons). <br> c) DV3: The number of self-reported times a participant received visitors during the isolation or quarantine period (excluding number of times for medical reasons).<br>

Secondary Outcome Measures

Name	Time	Method
Test uptake<br> a) DV1: The number of residents by area code that booked an appointment for Covid-19 test the 6-week pilot period.<br> b) DV2: The number of times per person, by area code that booked an appointment for Covid-19 test the 6-week pilot period.<br> c) DV3: The number of scheduled appointments for Covid-19 per date per person.<br><br>Self-isolation<br> d) DV4: The number of reported times the participant’s household members left their residence during the isolation or quarantine period. <br> e) DV5: The number of reported times a participant’s household members received visitors during the isolation or quarantine period. <br> f) DV6: If household members left their residence during the isolation or quarantine period. <br> g) DV7: If household members received visitors during the isolation or quarantine period. <br>