This article is a Preprint
Preprints are preliminary research reports that have not been certified by peer review. They should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.
Preprints posted online allow authors to receive rapid feedback and the entire scientific community can appraise the work for themselves and respond appropriately. Those comments are posted alongside the preprints for anyone to read them and serve as a post publication assessment.
Reducing false reassurance following negative results from asymptomatic coronavirus (Covid-19) testing: an online experiment
Preprint
in English
| medRxiv
| ID: ppmedrxiv-21261482
ABSTRACT
ObjectivesIndividuals who receive a negative lateral flow coronavirus (Covid-19) test result may misunderstand it as meaning no risk of infectiousness, giving false reassurance. This experiment tested the impact of adding information to negative test result messages about (a) residual risk and (b) need to continue protective behaviours. Design4 (residual risk) x 2 (post-test result behaviours) between-subjects design. SettingOnline. Participants1200 adults from a representative UK sample recruited via Prolific (12-15 March 2021). InterventionsParticipants were randomly allocated to one of eight messages. Residual risk messages were 1) Your coronavirus test result is negative (control); 2) Message 1 plus Its likely you were not infectious when the test was done (Current NHS Test & Trace); 3) Message 2 plus But there is still a chance you may be infectious (Elaborated NHS T&T); 4) Message 3 plus infographic depicting residual risk (Elaborated NHS T&T + infographic). Each message contained either no additional information or information about behaviour, i.e. the need to continue following guidelines and protective behaviours. Outcome measures(i) proportion understanding residual risk of infectiousness and (ii) likelihood of engaging in protective behaviours (score range 0-7). ResultsThe control message decreased understanding relative to the current NHS T&T message 54% vs 71% (AOR=0.37 95% CI [0.22, 0.61], p<.001). Understanding increased with the elaborated NHS T&T (89%; AOR=3.27 95% CI [1.78, 6.02], p<.001) and elaborated NHS T&T + infographic (91%; AOR=4.03 95% CI [2.14, 7.58], p<.001) compared to current NHS T&T message. Likelihood of engaging in protective behaviours was unaffected by information (F(1,1192)=0.43, p=.513), being high (M=6.4, SD=0.9) across the sample. ConclusionsThe addition of a single sentence ( But there is still a chance you may be infectious) to current NHS Test & Trace wording increased understanding of the residual risk of infection. Trial registrationOpen Science Framework https//osf.io/byfz3/
cc_by_nc
Full text:
Available
Collection:
Preprints
Database:
medRxiv
Type of study:
Experimental_studies
/
Prognostic study
/
Rct
Language:
English
Year:
2021
Document type:
Preprint