A mobile app for Advance Care Planning and Advance Directives (Accordons-nous): Development and ssability study

Article Article scientifique Article A mobile app for Advance Care Planning and Advance Directives (Accordons-nous): Development and ssability study eng 2022-04-20 2022-04-20 author Schöpfer Céline 0000-0001-5111-9245 709335 author Ehrler Frédéric 0000-0001-9734-3242 509959 author Berger Antoine 0000-0002-8447-0645 author Bollondi Catherine 0000-0003-4857-1956 549796 author Buytaert Laurence 0000-0001-6967-2372 756112 author De La Serna Camille 0000-0001-6361-5289 822739 author Hartheiser Florence 0000-0001-8377-9328 897199 author Fassier Thomas 0000-0001-5853-8450 866900 author Clavien Christine 0000-0003-0968-144X 833065 e34626 10.2196/34626 35442206 2292-9495 https://humanfactors.jmir.org/2022/2/e34626 Background: Advance care planning, including advance directives, is an important tool that allows patients to express their preferences for care if they are no longer able to express themselves. We developed Accordons-nous, a smartphone app that informs patients about advance care planning and advance directives, facilitates communication on these sensitive topics, and helps patients express their values and preferences for care. Objective: The first objective of this study is to conduct a usability test of this app. The second objective is to collect users' critical opinions on the usability and relevance of the tool. Methods: We conducted a usability test by means of a think-aloud method, asking 10 representative patients to complete 7 browsing tasks. We double coded the filmed sessions to obtain descriptive data on task completion (with or without help), time spent, number of clicks, and the types of problems encountered. We assessed the severity of the problems encountered and identified the modifications needed to address these problems. We evaluated the readability of the app using Scolarius, a French equivalent of the Flesch Reading Ease test. By means of a posttest questionnaire, we asked participants to assess the app's usability (System Usability Scale), relevance (Mobile App Rating Scale, section F), and whether they would recommend the app to the target groups: patients, health professionals, and patients' caring relatives. Results: Participants completed the 7 think-aloud tasks in 80% (56/70) of the cases without any help from the experimenter, in 16% (11/70) of the cases with some help, and failed in 4% (3/70) of the cases. The analysis of failures and difficulties encountered revealed a series of major usability problems that could be addressed with minor modifications to the app. Accordons-nous obtained high scores on readability (overall score of 87.4 on Scolarius test, corresponding to elementary school level), usability (85.3/100 on System Usability Scale test), relevance (4.3/5 on the Mobile App Rating Scale, section F), and overall subjective endorsement on 3 I would recommend questions (4.7/5). Conclusions: This usability test helped us make the final changes to our app before its official launch. Advance care planning Advance directives MHealth Mobile apps Mobile health Mobile phone Palliative care Usability Dewey 174.957 Dewey 616.0757 Dewey 610/370 Dewey 618.97 69 Institut Ethique Histoire Humanités 22A6 62 Département de radiologie et informatique médicale 227 65 Département de réadaptation et gériatrie 22B 48 Unité de développement et de recherche en éducation médicale 204 false 1289 Ethique et science 1008 JMIR human factors 9 2 5cf6415c-06ba-437e-8f9a-240d131eb9fd Article (Published version) Public MobileAppACP-UsabilityStudy_2022.pdf 1714959 application/pdf CC BY openAccess Faculté de médecine / Section de médecine clinique / Département de santé et médecine communautaires / Institut Ethique Histoire Humanités Faculté de médecine / Section de médecine clinique / Département de radiologie et informatique médicale Faculté de médecine / Section de médecine clinique / Département de réadaptation et gériatrie Faculté de médecine / Unité de développement et de recherche en éducation médicale

Title	Published in	Access level	OA Policy	Year	Views	Downloads

A mobile app for Advance Care Planning and Advance Directives (Accordons-nous): Development and ssability study	JMIR human factors			2022	177	93

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Buytaert, Laurence