Secure Patient Smartphone ApplicationBridging the Gap in the Health Care

System

Jessub KimArvie Carpio

Orion Health Sponsored ProjectSEPTA Research

Department of Electrical and Computer EngineeringUniversity of Auckland

Project Team

Arvie CarpioSoftware Developer and Tester

Jessub KimSoftware Developer and Tester

Dr. Rashina HodaProject SupervisorUniversity of Auckland

Duncan MillerSenior Software DeveloperOrion Health

Outline•Health Care Problems•Existing Solutions•Our Solution•Software Development Methodology•Software Design •Software Implementation•Testing and Validation•Future Work•Conclusions

Health Care System Problems

•Shortage on health care professionals who would be able to attend the growing number of patients

Health Care System Problems

• Increasing health care system costs

• Lack of self-management of patients to care for their personal health

• Patients and physicians are both busy with their daily activities

Existing Solutions in the Market

What We Need

Communication

Web TechnologyMobile Technology

Our Focus

Mobile Technology

Smartphone Application

MedTouch

Software Development Methodology

•Agile Development Methodologies

•2-week iterations

•Scrum board

•Flexible to change

Development Tools• Smartphone

▫LG P990▫Android Version 2.3 Gingerbread▫Android SDK 10▫Eclipse IDE

• Data Storage▫SQLite▫Data Nucleus

• Web Server▫Hoodie

UI Design and Testing Tools

• Icons▫GIMP▫Bamboo Pen and Touch▫Android Icon Generator

•Unit Testing▫JUnit

•Usability Testing▫Google Forms

Software Design Decisions

•Model-View-Controller Framework

•Data Access Layer

•Object-oriented

M

CV

Database

Data Access LayerPrescription

medicineNameintakeTimes...

VitalStatistic

vitalStatisticTypeValue...

Software Architectureapplication.feature.vitalStatistics, application.feature.prescription,...

vital_stats_home_fragment.xml, prescription_list_fragment.xml, ...

SQLite Database

Data Access Layer

DBAdapters

ModelControlle

r

View

VitalStatistic

Prescription

Photo

Application

VitalStatistic

Prescription

Photos

Settings

Settings

vitalstatistics

prescriptions

photos

settings

User Interface Design

•Low Fidelity Prototypes

User Interface Design

•Icons and Custom Theme

Vital Statistic

s

Medicine

Photos Settings

Blood Sugar

Heart Rate

Peak Air

Flow

Vital Stats

•Patient can record, view and update their health information

•Displays:▫Blood Sugar Level▫Peak Air Flow▫Heart Rate

CriterionI need to be able to record health observations and results

Prescriptions

•Works as a prescription reminder

•Patients can add/remove/edit prescriptions

CriterionI need to be able to create a prescription with times to be taken and notes

Photos

•Patients can:▫Take a photo▫Save photo with notes▫Edit notes▫Send photo to health

care provider▫Delete photo

CriterionI need to be able to take photos for transmitting to my clinician

Settings

•Can change settings for:▫Password▫Prescription notification

Web Service

•Web app (for clinicians)▫Architecture provided by Orion Health▫Basic UI▫Name and notes are sent

•Clinicians can check the images sent by their patients

Security

•Log in password

•Photo stored in the database as blobs (byte array) not in SD Card

•Secured Connection (SSL)

Unit Testing

•For Vital Stats and Prescription features

Usability Testing

•Purpose: ▫To see how users would

interact with our app▫How usable the

features are▫UI design suitability for

users

Usability Testing•Participants:

▫12 university students aged between 20-29 years old

•Facilitators:Arvie and Jessub

•Demographics▫Most of the participants were smartphone

users▫Only few participants used smartphones for

medical/fitness purposes

Usability Testing

•Methodology▫4 tasks that focus on

each of the main features

▫Participants filled out a form for each task.

▫Faciliators observed and recorded the behaviours.

Usability Testing - Results

I understand what the "Source URL" is for.

I understand how to set the time for my medication intake.

The chart showing the history of my vital statistics is helpful.

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

2.58

4

4.25

Top 3 Least Usable Features

Mean(1=Strongly Disagree, 5=Strongly Agree)

Usability Testing - Results

I am able to easily find my prescription details.

I can easily take a photo using the application.

I am able to easily view the history of my vital statistics using the application.

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

4.75

4.83

4.83

Top 3 Most Usable Features

Mean(1=Strongly Disagree, 5=Strongly Agree)

Usability Testing

•Bug fixes and improvements▫Prioritized tasks into P1, P2 and P3

P1: Critical features which must be finished P2: Important features which are needed P3: Trivial features which would be nice to

have

•Results▫11 out of 14 tasks completed

Future works•Chat feature

▫Make it easier for patients to contact clinicians

•Enhance security features▫Add SQLCipher support and more complex

password encryption algorithm

•Prescriptions transfer▫Enable more ways of communicating with

Healthcare Provider

Conclusion

•The application suits basic needs for patients to check and record their medical information.

•Cheaper and time saving healthcare system using smartphones

•The application helps the patient to self-manage their health

References1. S. Beul, M. Ziefle, and E.-M. Jakobs. “User’s preferences for telemedical

consultations: Comparing user’s attitude towards different media in technology-mediated doctor-patient-communication.” 5th International Conference on Pervasive Computing Technologies for Healthcare (PervasiveHealth) and Workshops, Germany, 2011, pp. 614-620.

2. C. P. Lai, W.-T. Vong, and P. H. H. Then. “A patient-centric framework for multisourced actionable health solution.” International Conference on Biomedical Engineering (ICoBE), IEEE, 2012, pp. 573-578.

3. Chronic Diseases, World Health Organization, http://www.who.int/topics/chronic_diseases/en/.

4. I. Qudah, P. Leijdekkers, and V. Gay. “Using mobile phones to improve medication compliance and awareness for cardiac patients.” Proc. of the 3rd International Conference on Pervasive Technologies Related to Assistive Environments, ACM, 2012.

5. V. Gay, P. Leijdekkers, and E. Barin. “A mobile rehabilitation application for the remote monitoring of cardiac patients after a heart attack or a coronary bypass surgery.” Proc. of the 2nd International Conference on Pervasive Technologies Related to Assistive Environments, ACM, 2009.

Questions?Feel free to email us at

acar149@aucklanduni.ac.nz