<b>Usability of the ROBOVID mobile app for health education about COVID-19</b>

methodological study with an applied quantitative approach, developed with 21 adults, using an electronic form. Usability was assessed using the System Usability Scale. The Statistical Package for the Social Sciences software was used to analyze the data.

Results:

the overall average score on the System Usability Scale questionnaire was 87.3, which classifies the usability of the ROBOVID application as the best achievable. Furthermore, the application has high scores for ease of memorization, user satisfaction and ease of getting to know the system, as well as excellent scores for absence of errors and speed in carrying out the tasks set.

Conclusion:

the ROBOVID application complies with the principles of usability in terms of efficiency, effectiveness and satisfaction in the evaluation of end users, showing that the application meets consumer needs in terms of its functionalities, demonstrating its viability in terms of the initial objectives.

Descriptors:
User-Centered Design; Health Education; Mobile Apps; Information Technology; Covid-19; Nursing

Highlights:

(1) ROBOVID was considered better achievable on the SUS scale by the participants.

(2) The ROBOVID app meets the user’s needs in terms of its functions.

(3) ROBOVID helps individuals to take care of themselves and prevent COVID-19.

(4) The ROBOVID app was evaluated as a useful, didactic and functional tool.

Participants	Q1 ^† † Qn = System Usability Scale question;	Q2 ^† † Qn = System Usability Scale question;	Q3 ^† † Qn = System Usability Scale question;	Q4 ^† † Qn = System Usability Scale question;	Q5 ^† † Qn = System Usability Scale question;	Q6 ^† † Qn = System Usability Scale question;	Q7 ^† † Qn = System Usability Scale question;	Q8 ^† † Qn = System Usability Scale question;	Q9 ^† † Qn = System Usability Scale question;	Q10 ^† † Qn = System Usability Scale question;	Score SUS ^‡ ‡ Score SUS = System Usability Scale questionnaire score;
P1 ^§ § Pn = Participant	4	4	3	4	4	4	4	4	3	4	97.5
P2 ^§ § Pn = Participant	4	4	3	4	2	4	4	4	3	2	85
P3 ^§ § Pn = Participant	4	4	3	4	2	2	4	4	0	4	77.5
P4 ^§ § Pn = Participant	4	4	3	4	2	4	4	4	4	4	92.5
P5 ^§ § Pn = Participant	4	4	3	3	4	4	4	4	4	4	95
P6 ^§ § Pn = Participant	4	4	3	4	4	4	4	4	4	2	92.5
P7 ^§ § Pn = Participant	4	4	3	4	4	4	4	4	4	2	92.5
P8 ^§ § Pn = Participant	4	4	3	4	4	4	4	4	4	4	97.5
P9 ^§ § Pn = Participant	4	4	4	4	2	4	2	4	4	4	90
P10 ^§ § Pn = Participant	4	1	3	3	2	3	4	4	4	4	80
P11 ^§ § Pn = Participant	4	4	4	4	2	4	4	4	4	4	95
P12 ^§ § Pn = Participant	4	4	4	4	0	2	4	4	4	3	82.5
P13 ^§ § Pn = Participant	4	4	3	3	4	2	3	2	4	4	82.5
P14 ^§ § Pn = Participant	4	4	3	3	4	4	2	4	4	2	85
P15 ^§ § Pn = Participant	4	4	3	4	4	4	4	3	2	4	80
P16 ^§ § Pn = Participant	4	4	4	4	4	2	4	4	3	4	92.5
P17 ^§ § Pn = Participant	4	4	4	4	2	4	2	4	3	4	87.5
P18 ^§ § Pn = Participant	4	3	4	4	4	2	2	3	2	3	75
P19 ^§ § Pn = Participant	3	3	4	4	2	3	3	4	4	4	85
P20 ^§ § Pn = Participant	4	4	3	3	3	4	4	3	0	4	80
P21 ^§ § Pn = Participant	4	4	3	4	4	2	4	4	2	4	87.5
Overall average SUS ^‡ ‡ Score SUS = System Usability Scale questionnaire score;											87.3

Usability features	Mean number of questions among participants	Overall mean	Meaning
Ease of getting to know the system	Q3 ^* * Q = Question of System Usability Scale (83.3) Q4 ^* * Q = Question of System Usability Scale (94.0) Q7 ^* * Q = Question of System Usability Scale (88.1) Q10 ^* * Q = Question of System Usability Scale (88.1)	88.4	Easy-to-use system when used for the first time
System efficiency	Q5 ^* * Q = Question of System Usability Scale (75.0) Q6 ^* * Q = Question of System Usability Scale (83.3) Q8 ^* * Q = Question of System Usability Scale (94.0)	84.1	Speed in carrying out established tasks
Inconsistencies	Q6 ^* * Q = Question of System Usability Scale (83.3)	83.3	No errors
Ease of memorization	Q2 ^* * Q = Question of System Usability Scale (94.0)	94.0	Easy-to-use system even after a long period without using it
User satisfaction	Q1 ^* * Q = Question of System Usability Scale (98.8) Q4 ^* * Q = Question of System Usability Scale (94.0) Q9 ^* * Q = Question of System Usability Scale (78.6)	90.5	Pleasant design

Escola de Enfermagem de Ribeirão Preto / Universidade de São Paulo Av. Bandeirantes, 3900, 14040-902 Ribeirão Preto SP Brazil, Tel.: +55 (16) 3315-3451 / 3315-4407 - Ribeirão Preto - SP - Brazil
E-mail: rlae@eerp.usp.br

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[1] Corresponding author: Gabrielle dos Santos Correia E-mail: gabriellecorreia@id.uff.br https://orcid.org/0000-0001-8667-8813

Brasil

Brasil

Usability of the ROBOVID mobile app for health education about COVID-19 * * The publication of this article in the Thematic Series “Digital health: nursing contributions” is part of Activity 2.2 of Reference Term 2 of the PAHO/WHO Collaborating Centre for Nursing Research Development, Brazil.

Objective:

Method:

Results:

Conclusion:

Highlights:

Usability of the ROBOVID mobile app for health education about COVID-19 ^* * The publication of this article in the Thematic Series “Digital health: nursing contributions” is part of Activity 2.2 of Reference Term 2 of the PAHO/WHO Collaborating Centre for Nursing Research Development, Brazil.