Evaluation of a smartphone application to improve medical certification of the cause of death

ABSTRACT

Introduction:

A smartphone application named AtestaDO was developed to support physicians with medical certification of the cause of death. The objective of this study is to evaluate the acceptability of the app.

Methods:

Physicians were invited to attend meetings on the proper certification of cause of death, and to evaluate the application in a national workshop in Natal (first stage) and in two large hospitals in Belo Horizonte (second and third stages).

Results:

In Natal, 82% of 38 physicians had more than 20 years of experience and in Belo Horizonte, more than 67% of 58 physicians had less than 5 years of experience. The sections “Application interface”, “How to certify the causes of death”, “Practice with exercises” and “Other information for physicians” were positively evaluated by more than 50% of physicians in Belo Horizonte. In Natal, all sections were positively evaluated by at least 80% of participants. More than 70% of the participants in both Natal and the second stage of Belo Horizonte indicated they would possibly use AtestaDO to guide filling of a death certificate. The probability of using AtestaDO to teach classes on filling death certificates was 83.3% for Natal’s physicians but less than 60% in Belo Horizonte. In the three stages, most physicians would recommend using the application to other colleagues.

Conclusion:

The evaluation of AtestaDO showed good acceptability. We expect that the use of this tool enables improvements in medical certification of causes of death.

Keywords:
Mobile applications; Cause of death; Death Certificate; Mortality; Evaluation study; Smartphone

RESUMO

Introdução:

O aplicativo para smartphone AtestaDO foi desenvolvido para auxiliar o médico na certificação da causa de morte. Neste estudo se propõe avaliar a aceitabilidade desse aplicativo.

Métodos:

Médicos foram convidados para participar de reuniões sobre certificação correta da causa da morte e avaliar o aplicativo em três etapas dessas reuniões, realizadas em Natal e em dois grandes hospitais de Belo Horizonte.

Resultados:

Em Natal, 82% dos 38 médicos participantes tinham mais de 20 anos de graduação, e em Belo Horizonte, mais de 67% dos 58 médicos tinham menos de 5 anos de graduação. As seções “Interface do aplicativo”, “Como atestar as causas de morte”, “Prática com exercícios” e “Outras informações para o médico” foram bem avaliadas por mais de 50% dos médicos de Belo Horizonte. Em Natal, todas as seções foram bem avaliadas por pelo menos 80% dos médicos. Mais de 70% dos participantes de Natal e da segunda etapa de Belo Horizonte usariam o aplicativo para preencher a causa de morte. A probabilidade de usar o AtestaDO para dar aulas sobre preenchimento da Declaração de Óbito foi de 83% para médicos de Natal, mas inferior a 60% em Belo Horizonte. Nas três etapas, a maioria dos médicos recomendaria o uso do aplicativo para outros colegas.

Conclusão:

A avaliação do aplicativo AtestaDO mostrou boa aceitabilidade. Espera-se que o uso dessa ferramenta permita alcançar melhorias na certificação médica da causa do óbito.

Palavras-chave:
Aplicativos móveis; Causas de morte; Declaração de Óbito; Mortalidade; Estudos de avaliação; Smartphone

INTRODUCTION

Mortality data are essential tools for health planning and management. In Brazil, the Sistema de Informação sobre Mortalidade (Mortality Information System - SIM) is universal and well-consolidated, with the certification by physicians of the causes of death in death certificates (DC). However, the quality of this information is not uniform among Brazilian states, with a high proportion of non-informative causes classified as garbage causes (GC) ⁽¹ recorded on SIM as the underlying cause of death.

Garbage causes may derive from the improper filling of the DC by physicians, including the non-distinction between the underlying cause of death and the terminal event². The lack of training for filling DC has been pointed as one of the factors related to such low precision^{3), (4}, which can be improved with educational initiatives^{5), (6}. Several initiatives such as training courses and workshops for physicians in hospitals and the distribution of instruction manuals have been developed in Brazil^{7), (8}, seeking to raise awareness among these professionals about the importance of the proper filling of the DC for public health^{4), (9), (10}. Despite these interventions, one third of the deaths remains with GC as the underlying cause of death¹¹.

In-person training programs for all physicians represent a major challenge in Brazil due to the number of professionals and the country’s territorial extension. In 2016, a team of experts from the Brazilian Ministry of Health (MS) analyzed cost-effective alternatives to train physicians in cause of death certification. At that time, a proposal for a smartphone application was discussed - the AtestaDO application - to be developed in partnership with the School of Medicine of Universidade Federal de Minas Gerais (UFMG), with support from Vital Strategies and the University of Melbourne, by the Bloomberg Foundation. This proposal is part of a broad intervention initiative, the Data for Health project, which aimed to improve statistics on causes of death. The initiative has proved to be of great relevance by raising awareness physicians, encoders and health managers about the need to adopt routines for the correct filling of DC¹².

The proposal of AtestaDO is to have impact on the quality of the causes of death certified by the physician. This study thus sought to evaluate the acceptability of the application as an instrument to assist physicians in the certification of the cause of death.

METHODS

The application was developed for the mobile environment, executable on Android and iOS platforms, and compatible with tablets and smartphones. The application is available for download on both the Play Store and Apple Store; it can be used on offline mode, ensuring the fast and useful access to its informative content. The software and its continuous technical support are provided by the MS.

A preliminary version of AtestaDO was developed from the last manual of the MS and Conselho Federal de Medicina (Brazilian Federal Medicine Council - CFM) on the filling of DC⁷. Teams of physicians from the MS and UFMG performed successive evaluative surveys followed by changes in the content and format of the application, which resulted in a final version Beta 0.3.0, presented at a national meeting about the project in October 2017 and made available for download online. The conduction of the evaluative studies with subsequent elaboration of the various versions of the application followed an action research proposal, a method that assumes that researchers and representative participants of the situation or problem are involved in a cooperative and collaborative way to create intersectoral spaces to broaden the knowledge about the discussed object¹³.

The application presents an interactive starting menu structured into six major sections: 1) How to certify the causes of death; 2) Important concepts; 3) Practice with exercises; 4) Other information for physician; 5) Questions and answers; and 6) Legal, normative and bibliographical references. Section 3 presents a tutorial for the correct filling of DC and clinical cases of different medical specialties, including an option to fill causes of death and a system of user response validation.

The evaluation of application acceptability among hospital physicians was performed by UFMG in three stages, in 2016 and 2017. After each stage, the team responsible for the evaluative study suggested adaptations to the MS team responsible for developing the application (Figure 1).

Figure 1
Stages of the AtestaDO evaluation study.

The first stage - identified as Natal - occurred in November 2016 in a national meeting organized by the MS for health services professionals and researchers, focusing on proposals to improve the quality of information on causes of death. All physicians present were invited to participate in a specific meeting coordinated by UFMG, which aimed to evaluate the application’s first version (beta 0.0.7).

In the following stages, physicians from selected hospitals were invited to a training meeting in cause of death certification using AtestaDO. In the second stage, identified as BH_1, the evaluation was performed in two large public hospitals in April and May 2017 (versions 0.1.7 and 0.1.8 - Android and 0.1.6 iOS). Starting from this stage, the MS team started to develop the graphic design, thus improving the application interface. In the third stage (BH_2), a final version (Beta 0.3.0) was tested in a large hospital in Belo Horizonte in December 2017.

Initially, all participating physicians were informed about the study and signed the Term of Free and Informed Consent, ensuring the confidentiality of information. Following, they filled out a brief questionnaire on their professional profile and evaluated clinical cases of hospital deaths (10 in Natal and 5 in Belo Horizonte), with a DC section on filling the causes of death. After finishing the analyzed cases, a training session was performed for downloading and using the AtestaDO application¹. A new test that consisted in attesting the cause of death of the same previous cases was thus conducted. Due to the limited time for training, physicians participating in stage BH_2 were invited to respond to a new test in up to one week after the meeting.

A brief questionnaire on acceptability was also applied. Participants were asked to classify the relevance of the application sections on a scale of 1 (not good) to 5 (excellent), and to evaluate its functionality, its contribution to the filling of the DC and the probability of use of the application when filling a DC or teaching classes, indicating whether they would recommend AtestaDO to colleagues. There were also questions that evaluated the means of access to the application and the time spent in reading and using it. Two open questions were inserted, allowing participants to suggest improvements in the application. In stage BH_2 it was verified if the participants had already accessed AtestaDO since the application was already available to download for free at the time.

Given the successive improvements of the application versions, the evaluation questionnaires applied to physicians were adapted for each stage, which is why some questions do not present results for all stages.

The study was approved by the Research Ethics Committees of Universidade Federal de Minas Gerais (UFMG), of Fundação Hospitalar do Estado de Minas Gerais (Hospital Foundation of Minas Gerais - Fhemig) and of Hospital Metropolitano Odilon Behrens (Odilon Behrens Metropolitan Hospital - HMOB).

RESULTS

In total, 96 physicians participated in the three evaluation stages. In Natal (Stage 1), of the 46 physicians attending the meeting, 8 were unable to access the application due to internet connection problems to download it. In stage BH_1, of 44 participants, 34 managed to access the application and respond to the evaluation questionnaire. In the last stage (BH_2), 61 physicians attended the meeting, but only 24 followed the instruction to download the application after the workshop and participated in this study (Figure 1).

In Natal, 82% of the physicians had concluded their undergraduate studies over 20 years ago. In the two workshops in Belo Horizonte, over two thirds of the participants had concluded their undergraduate studies less than 5 years ago, and most were resident physicians. Regarding specialties, most participants in Natal were epidemiologists/public health professionals and pediatricians (26.3% each). On the other hand, in the BH_1 workshop, 65% of the participants were from the medical clinic, and in the BH_2 workshop, 38% were community and family medicine professionals. The main place of professional practice reported in the BH_1 and BH_2 workshops was the hospital, whereas 63% of the participants in Natal reported another location (Table 1).

Table 1
Professional profile of physicians participating in AtestaDO evaluation workshops held in Natal and Belo Horizonte, Brazil.

Professional profile	Natal n = 38		Belo Horizonte (BH_1) (n = 34)		Belo Horizonte (BH_2) (n = 24)
	n	%	n	%	n	%
Time since conclusion of undergraduate studies
Up to 5 years	-	-	23	67.6	19	79.2
5 to 20 years	7	18.4	8	23.5	4	16.7
20 years or more	31	81.6	3	8.8	1	4.2
Specialty
Epidemiology/Public Health	10	26.3	-	-	-	-
Pediatrics	10	26.3	8	23.5	7	29.2
Pathology	5	13.2	-	-	-	-
Internal medicine	4	10.5	22	64.7	8	33.3
Occupational medicine	3	7.9	-	-	-	-
Family Medicine	1	2.6	-	-	9	37.5
Nature of activity
Resident	-	-	26	76.5	22	91.7
Clinician	6	15.8	3	8.8	1	4.2
Hospital assistence	7	18.4	3	8.8	-	-
Professor	7	18.4	-	-	1	4.2
Public health physician	9	23.7	1	2.9	-	-
Main place of professional practice
Hospital/Urgency/Emergency	12	31.6	33	97.1	15	62.5
Healthcare Center	1	2.6	-	-	9	37.5

• “Other” and “not informed”: data not presented.

More than half of the participants in all three stages reported having already filled a DC. However, in the BH_1 and BH_2 workshops, 41% and 25% of physicians, respectively, reported never having filled a DC. More than 90% of Natal’s physicians had attended a lecture or class on filling the DC - most in the institution they work at -, and 97% had already accessed and read the manual by the MS and CFM to fill the DC. In Belo Horizonte (BH_1), 56% of the physicians had already attended a lecture or class about filling the DC (50% during their undergraduate studies), but only 38% of the participants reported having accessed the manual. In stage BH_2, 96% of the physicians reported having attended a lecture or class on the filling of DC (75% during their undergraduate studies) and 58% had access to the manual, of which only 50% reported having read it (Table 2).

Table 2
Information about filling in Death Certificate of physicians participating in AttestaDO evaluation workshops held in Natal and Belo Horizonte, Brazil.

Death certificate filling	Natal n = 38		Belo Horizonte (BH_1) (n = 34)		Belo Horizonte (BH_2) (n = 24)
	n	%	n	%	n	%
Filled a DC
Yes	35	92.1	20	58.8	18	75.0
No	3	7.9	14	41.2	6	25.0
Attended a class/lecture on filling DC
Yes	35	92.1	19	55.9	23	95.8
No	3	7.9	15	44.1	1	4.2
Number of attended lectures
Up to 5 times	19	50.0	16	47.1	20	83.3
5 to 10 times	6	15.8	-	-	-	-
10 or more	1	2.6	-	-	-	-
If yes, where the lecture was attended
Undergraduate studies	8	21.1	17	50.0	18	75.0
Residency	2	5.3	1	2.9	3	12.5
Institution where I work	20	52.6	1	2.9	2	8.3
Other	5	13.2	-	-	-	-
Access to the manual for DC filling
Yes	37	97.4	13	38.2	14	58.3
No			21	61.8	10	41.7
If yes, have you read the manual?
Yes	37	97.4	12	35.3	12	50.0
No			13	38.2	2	8.3

• DC: Death certificate; No information: data not presented.

About two-thirds of the participants accessed the application by downloading it on smartphones. The contents of AtestaDO were read for 5 to 10 minutes (BH_1, 26.5% of the participants) or 15 to 30 minutes (BH_2, 42% of the participants) (Table 3).

Table 3
Access to the AtestaDO application by physicians participating in workshops held in Natal and Belo Horizonte, Brazil.

Access to AtestaDO	Natal n = 38		Belo Horizonte (BH_1) (n = 34)		Belo Horizonte (BH_2) (n = 24)
	n	%	n	%	n	%
Prior access to AtestaDO (before the workshop)
Yes	-	-	-	-	3	12.5
No	-	-	-	-	21	87.5
Have you read AtestaDO before the workshop?
Yes	-	-	-	-	2	8.3
No	-	-	-	-	1	4.2
Not reported	-	-	-	-	21	87.5
Access to the application
Smartphone	25	65.8	33	97.1	21	87.5
Computer	6	15.8	1	2.9	1	4.2
Not reported	7	18.4	-	-	2	8.3
Time - in minutes - spent reading AtestaDO
5 to 10 minutes			9	26.5	1	4.2
10 to 15 minutes	-	-	3	8.8	3	12.5
15 to 30 minutes	-	-	4	11.8	10	41.7
30 to 60 Minutes			-	-	4	16.7
60 Minutes or more	-	-	-	-	2	8.3
Not reported	-	-	18	52.9	4	16.7

Regarding the acceptability of AtestaDO, the sections were better evaluated in the Natal and BH_2 workshops. The “Application Interface” was well evaluated in the three workshops by more than 82% of physicians. In Natal, all sections were well evaluated by at least 80% of the physicians, except for “Contribution to the filling of the causes of death” (63%). The sections “How to certify the causes of death” and “Other information for physician” were well evaluated, being graded 4 or 5 by more than 50% of participants. The section “Practice with exercises” obtained scores of 4 or 5 among 80.6% of Natal participants. However, the proportions for these scores were lower in Belo Horizonte, 48.5% and 63.6% for BH_1 and BH_2, respectively. The “Important concepts” and “Questions and answers” sections - which were added to the application from 2017 onwards - were well evaluated by more than half of the physicians in Belo Horizonte. The section “Legal, normative and bibliographical references” was well evaluated in the Natal (80.8%) and BH_2 (73.7%) workshops; however, this percentage was 34.8% for BH_1 (Table 4).

Table 4
Evaluation of the AtestaDO application by physicians participating in workshops held in Natal and Belo Horizonte, Brazil.

Evaluated section of AtestaDO	Natal			Belo Horizonte (BH_1)			Belo Horizonte (BH_2)
	Answers to the question(n)	Score 4-5*		Answers to the question(n)	Score 4-5*		Answers to the question(n)	Score 4-5*
		n	%		n	%		n	%
How to certify causes of death	33	22	66.7	30	16	53.3	22	14	63.6
Important concepts	-	-	-	25	14	56.0	22	17	77.3
Practice with exercises	31	25	80.6	33	16	48.5	22	14	63.6
Other information for the physician	34	25	73.5	28	14	50.0	22	16	72.7
Questions and answers	-	-	-	26	14	53.8	22	18	81.8
Legal, normative and bibliographical references	26	21	80.8	23	8	34.8	19	14	73.7
Contribution of the application in filling the DC	35	22	62.9	33	17	51.5	22	14	63.6
Evaluation of application’s interface	36	31	86.1	34	28	82.4	22	19	86.4
Probability of use for filling the DC	36	29	80.6	33	15	45.5	21	15	71.4
Probability of use in a lecture on filling the DC	36	30	83.3	31	13	41.9	22	13	59.1
Probability of recommending the application to colleagues	36	30	83.3	32	17	53.1	22	15	68.2

• *Highest grades (rating from 1 to 5, having 5 as the best evaluation); DC: Death certificate.

The application’s contribution to assigning the cause of death was evaluated by more than half of the physicians with a score of 4 or 5. More than 70% of participants in the Natal and BH_2 stages would possibly use the application to fill the cause of death in the DC. However, only 46% of the users in step BH_1 would possibly use the application for this purpose. The probability of using AtestaDO for teaching was 83% in Natal, and 42% and 59% in Belo Horizonte (BH_1 and BH_2, respectively). In the three stages, most physicians would recommend the application to other colleagues (Table 4).

Regarding the open questions, the suggestion for an application with interactive function in which physicians could include data from a real DC appeared more than once. Moreover, the participants suggested the insertion of images from the fields of the DC, review of cases, presentation of links to technical and normative content, to the Seletor de causa básica (Underlying Cause of Death Selector - SCB) and the inclusion of a dictionary of medical terms.

DISCUSSION

The results of this study indicate good acceptability of the AtestaDO application and the success of the action research proposal, in which the evaluators and the professionals responsible for developing the application were involved in a cooperative and collaborative manner, changing the application’s format and content after each evaluative study.

One of AtestaDO’s advantage is its use in smartphones, which are increasingly used for communication, consultation and follow-up of patients, as well as for researching information on the internet and medical education, including applications for medicine^{14), (15}. Thus, the wide use of applications is expected from physicians¹⁴. Payne et al. ⁽¹⁶ found that 75% of junior physicians had applications related to medicine installed on their smartphone. These applications are more commonly used by undergraduate students, resident physicians¹⁴ or younger physicians¹⁷.

Several studies indicate that educational strategies such as workshops, educational interventions, seminars, and online tutorials increased the accuracy of the cause of death or provided an overall improvement in the certification of causes of death^{2), (5), (6), (18)- (20}. Despite several previous initiatives undertaken by the MS to improve the filling of DC - such as training courses for physicians and the manual prepared in partnership with CFM⁷ -, Brazilian studies show that the quality of the DC filling in the country still needs to improve. França et al. ¹¹⁾ found that the proportion of garbage codes declared as the cause of death remained high in 2014 - about 33%. In Belém, 71.5% of medical certifications were found to present some type of error, such as incorrect sequential filling of the causes of death. According to Silva et al. ⁽²¹, this is related to the lack of specific information in undergraduate curricula and in continuing medical education.

The evaluation of the acceptability of AtestaDO was conducted with three distinct groups in this study. Given that it was national meeting promoted by the MS, the Natal workshop was attended by representatives from different regions of Brazil. These physicians had finished their undergraduate studies for longer and were mostly epidemiologists, public health professionals and pediatricians. Those participating in the Belo Horizonte workshops were mostly young and resident physicians, with under 5 years since finishing their undergraduate studies, and clinicians or family physicians.

These different profiles are reflected in the evaluation results. In Natal, there was a higher percentage of physicians who had already attended a class or lecture on the filling of the DC, having previous experience on this and with previous access to and reading of the manual for filling DC (97.4%). At the Belo Horizonte workshops, at least 25% of the participants reported never having filled a DC, and a low percentage of physicians reported having read the manual, coinciding with results of a study conducted in Joaçaba (SC) ⁽⁹. In another study previously conducted in Belo Horizonte, 75% of 18 physicians interviewed did not know the manual, but 60% reported having received instructions on the completion of DC during their undergraduate studies and 27% reported to receive guidance during their medical residency¹⁰.

The best assessments occurred in Natal, BH_2 and BH_1, respectively, coinciding with the best connectivity to download the application. This may also be a result from the different profiles of participating physicians in the evaluation stages. In Natal, physicians already had experience with filling DC and were involved in public health activities, thus being aware of the importance of the quality of information about mortality. In Belo Horizonte, physicians were younger and had less experience in filling DC, and probably greater critical capacity in the use of applications given the previous experience with this type of resource. Given that such young audience is the one that mostly uses applications on their smartphones^{14), (17} and that has the least knowledge about the filling of DC, the availability of AtestaDO would enable the greater access to instructions. Introducing the use of the application in medical residency programs - already at the beginning of the activities via a resolution of the Comissão Nacional de Residência Médica - could be a good incentive in this direction.

The application’s interface was the most well-evaluated item in the three workshops. According to Boruff and Storie¹⁴, a usable interface and offline access to information within an application were considered as facilitators to access the resources of a smartphone, functionalities present in AtestaDO. In the most updated version used in the BH_2 workshop, the next items with the highest scores were “Questions and answers” and “Important concepts”, which may be responding to a demand from the public consisting of young physicians. The section “Practice with exercises” was very well evaluated in Natal but not in BH_2, possibly due to the profile of this public - previously described. The worst evaluation of the application - during BH_1 - was probably due to the use of the intermediate version of the application and to the connectivity problem. According to Boruff and Storie¹⁴, access to wi-fi connectivity at the hospital or clinic is recognized as a limiter to the use of mobile devices.

The low adherence to evaluate and answer the questionnaire in the last evaluation (BH_2) may have influenced the results. Such return rate, however, was better than the one found in other studies on the use of mobile devices by physicians, studies and residents^{14), (16}. Another limitation raised by the participants was time, considered insufficient to better analyze the application.

The structuring of the coordinating group in the development of the application must be highlighted. This group contributed to improve the performance of AtestaDO in several evaluations conducted with the MS, which included guidelines for the correct filling of DC, guidelines for specifying the underlying cause of death considering the garbage codes, final revision of the content (text), definition of the layout and topic structure, as well as the review of clinical cases and inclusion of the tutorial.

In all workshops the suggestion to make the application more interactive was emphasized, an aspect inserted in the latest version of AtestaDO (0.3.6, available in 2018) by integrating Iris^{2), (22)- (25}, an automatic system to encode the causes declared by the physician in the DC and select the underlying cause of death. This is the result of a collaborative effort involving several institutions from different countries, including the German Institute of Medical Documentation and Information and the U.S National Center for Health Statistics. This system can be used in multiple languages as long as a dictionary of diagnostic terms is created. In text input mode, the user enters the causes of death in free text, and a dictionary of terms included in Iris translates such information into codes of the International Statistical Classification of Diseases and Related Health Problems - 10^th Revision (ICD-10). Thus, in the last version of the application the practical exercises were made interactive and after filling the causes of death, the physician becomes aware of the quality of the filling.

The good acceptability of the application is also reflected in the number of installations. AtestaDO was installed on approximately 32,000 devices in the period from March 2017 to May 2019, according to the MS. Such initiative is being used by other Latin American countries, which have also developed their applications based on AtestaDO.

In addition to developing this application, the MS has been performing other actions to improve the quality of information such as the proposal to implant Iris in the coding of causes and selection of the underlying cause of death, enabling international comparability. Among other initiatives of the Data for Health project, approximately 70 in-person trainings were conducted for over 2,000 physicians between June 2017 and January 2019, in which AtestaDO was presented and used in practical exercises.

CONCLUSION

The evaluation of the AtestaDO application showed good acceptability. The results indicate that AtestaDO presents a significant potential to impact the quality of the causes of death certified by physician, as it constitutes a complement and alternative for the in-person training of physicians. This is a sustainable long-term initiative, available for free to physicians on multiple application platforms, in addition to being usable offline. Therefore, its improvement deserves continuity with constant updates such as the latest version, which presents greater interactivity with the integration of Iris.

Acknowledgments

The authors would like to thank the physicians who agreed to participate in the evaluation meetings, and Eleonora Gehlen Walcher for the suggestions.

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• 1
  Due to internet connection problems there were issues to download preliminary versions. To mitigate such issue the participants of the final evaluation (BH_2) were instructed to download and install the application after the workshop in an environment with stable internet connection.

• Financial support: Vital Strategies as part of the Data for Health Initiative of Bloomberg Philanthropies (Project 23998 Fundep/UFMG).

Publication Dates

• Publication in this collection
  28 Nov 2019
• Date of issue
  2019

History

• Received
  12 June 2019
• Reviewed
  04 Aug 2019
• Accepted
  06 Aug 2019