Usabilidade de autoteste de antígeno para COVID-19: fatores associados e desafios relatados.
Isadora Silva de Carvalho, Lariane Angel Cepas, Talita Morais Fernandes and 5 others
PMID 42561273WHAT IT FOUND
Only 36.7% of participants were classified as having high usability, and 81.4% reported difficulty, especially with instructions, swab and buffer handling, and result reading.
Higher income was the only factor linked to high usability.
Key findings
01Only 36.7% of participants were classified as having high usability of the COVID-19 antigen self-test.
02Most participants (81.4%) reported difficulty using the self-test, especially understanding instructions, using the swab and buffer, understanding the procedure, and reading the result.
03Income above two minimum wages was the only factor significantly associated with high usability in the adjusted analysis (adjusted odds ratio 1.92; 95% CI 1.15-5.67).
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The sample was 90 adults recruited by convenience and snowball sampling at one public site, so it may not represent other populations. High usability was defined using the sample median, not a validated cutoff, so the classification is exploratory. The main outcome was perceived usability measured by self-reported questionnaire answers, not diagnostic accuracy. The study could not control for prior experience with self-tests or other diagnostic devices. It was conducted in one city and public setting, so it may not reflect other regions or socioeconomic groups.
Declared interests
Funded by CNPq, CAPES, and the University of São Paulo.
The easy way to misread this
Do not read the 81.4% difficulty rate as evidence that the self-test is inaccurate or that it will fail for all patients. The study measured perceived usability in 90 adults recruited at one public site, not diagnostic accuracy.