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Final presentation of my master thesis about quantified self for personal health.
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Quantified Self for Personal Health
Presentation by Anne Everars 4 september 2014
Promotor: Prof. Erik Duval Assessors: Dr. ir. Davy Preuveneers and Ir. José Luis Santos
Assistents: Ir. Robin De Croon and Dr. Joris Klerkx
1
Content• About the topic
• Literature study
• Design
• Low-fidelity prototypes
• High-fidelity prototypes
• Conclusion2
Content• About the topic
• Literature study
• Design
• Low-fidelity prototypes
• High-fidelity prototypes
• Conclusion3
- Quantified self, self knowledge through numbers. http://quantifiedself.com/ - SWAN, Melanie. The quantified self: Fundamental disruption in big data science and biological discovery. Big Data, 2013, 1.2: 85-99. - SWAN, Melanie. Sensor mania! the internet of things, wearable computing, objective metrics, and the quantified self 2.0. Journal of
Sensor and Actuator Networks, 2012, 1.3: 217-253. 4
Personal health➲ Focus on a healthy lifestyle ➲ Focus on self-care strategies ~ balance exercise behavior and nutritional intake
!
!
!
Overweight & obesity mainly due to:- Sedentary lifestyle- Overconsumption (of foods)
http://t0.gstatic.com/images?q=tbn:ANd9GcQhuS-OwHGRuWrGYqxbMr3eME7i54JbgO0JqaYafp-bg0d0Qnln-g
National voedings- en gezondheidsplan voor België. http://www.health.belgium.be/eportal/Myhealth/Healthylife/Food/index.htm#.Umu0gZROokR. 2005 - 2010.
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Research question
!
Gain better lifestyle ➲ lose weight• Easy adding of elements
• Motivation via gamification and social networkHow?
- SIX, Bethany L., et al. Evidence-based development of a mobile telephone food record. Journal of the American Dietetic Association, 2010, 110.1: 74-79.
- STEVENS, Susan Hunt. How gamification and behavior science can drive social change one employee at a time. In: Design, User Experience, and Usability. Health, Learning, Playing, Cultural, and Cross-Cultural User Experience. Springer Berlin Heidelberg, 2013. p. 597-601.
- HWANG, Kevin O., et al. Social support in an Internet weight loss community. International journal of medical informatics, 2010, 79.1: 5-13. 6
Target users
• People with that want/need to lose weight
• From different age categories and social groups
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Content• About the topic
• Literature study
• Design
• Low-fidelity prototypes
• High-fidelity prototypes
• Conclusion8
Criteria for comparison1. Food registration
2. Activity registration
3. Setting goals
4. Gamification & rewards
5. Reports
6. Login options
7. Social character
8. Availability (platform, online/offline, languages)
9. Price
https://annespersonalhealth.wordpress.com/2013/10/14/criteria-for-comparing-existing-applications/
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Compared applications
https://annespersonalhealth.wordpress.com/category/review/
Calories 2 Perfect Diet Tracker
Weight Watchers
Mobile Calorie Counter
by FatSecret10
Calories 2Perfect
Diet Tracker
Weight Watchers
Mobile
MyFitnessPal
Calorie Counter
Food registrationOwn recipes
Activity registrationSetting goalsGamification
RewardsProgress tracking
LoginSocial networkFriendnetwork
Available offline
Platform OS X, iOSOS X,
Windows, Linux
All Mobile iOS, Android
Languages Limited English Many English ManyPrice Free Payed Payed Free Free
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Conclusion• Food and activities always considered together
• Best : Dutch database
• Little automation (mostly only barcode scanners)
• Setting goals & reports = importantchallenges = nice
! metabolic resting state (e.g. CalorieCounter)
! pop-ups12
Content• About the topic
• Literature study
• Design
• Low-fidelity prototypes
• High-fidelity prototypes
• Conclusion13
Design criteria• Consistency
• Simplicity
• Maintaining a caloric diary
• Setting goals
• Gamification
• Social character- RUBIN, Jeffrey; CHISNELL, Dana. Handbook of usability testing: howto plan, design, and conduct effective tests. John Wiley & Sons,
2008. - KARAT, John, et al. HUMAN-COMPUTER INTERACTION SERIES VOLUME 8. 2005. - HELSEL, Diane L.; JAKICIC, John M.; OTTO, Amy D. Comparison of techniques for self-monitoring eating and exercise behaviors on
weight loss in a correspondence-based intervention. Journal of the American Dietetic Association, 2007, 107.10: 1807-1810. - CHOE, Eun Kyoung, et al. Understanding quantified-selfers' practices in collecting and exploring personal data. In: Proceedings of the
32nd annual ACM conference on Human factors in computing systems. ACM, 2014. p. 1143-1152.14
Platform selection
➲ iPad!• Reasonably mobile and carried along • Screen sufficiently large • Network connection (+ other sensors)
CONNELLY, Kay H., et al. Mobile applications that empower people to monitor their personal health. e & i Elektrotechnik und Informationstechnik, 2006, 123.4: 124-128.
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Content• About the topic
• Literature study
• Design
• Low-fidelity prototypes
• High-fidelity prototypes
• Conclusion16
First prototype
https://annespersonalhealth.wordpress.com/2013/11/20/prototype-current-status/17
Evaluation first prototype= via EXPERTEVALUATIE
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Evaluation - remarks
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Evaluation - remarks
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Evaluation - remarks
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Evaluation - remarks
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Evaluation - remarks
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And then ….
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Second prototype
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Second prototype
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Second prototype
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Second prototype
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Second prototype
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Evaluation - methodology
1. Short introduction
2. Initial questionnaire ➲ personal questions
3. Think-aloud user test
4. SUS-questionnaire
BROOKE, John. SUS-A quick and dirty usability scale. Usability evaluation in industry, 1996, 189: 194.
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Evaluation
• 7 users 21 - 25 years old
• 4/7 with overweight
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Evaluation - results• Adding item(s) seems hard (3/7)
• Consistency between food diary and activity logbook (7/7)
• Entering data in report view is counterintuitive (2/7)
• Many users (5/7) liked the option of challenging friends inside the application
• Some users (2/7) would have liked the option to have more than one goal; or to not have to focus on weight changes.
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Evaluation - resultsSUS - score : 81
http://www.humanfactors.com/images/newsletters/2010/jan/SUS4.jpg
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Evaluation - resultsSUS - score : 81
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Content• About the topic
• Literature study
• Design
• Low-fidelity prototypes
• High-fidelity prototypes
• Conclusion35
Database selection• (American) English databases➲ many available: - FatSecret API - ItemMaster API - Esha API - CalorieKing - Myfitnesspal
• Nubel & NEVO
• Open Food Facts (http://be-en.openfoodfacts.org/)
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Design
37
To the digital prototype
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First digital prototype
Adding item(s) seems hard ➲ issue with paper prototype? ➲ Work in progress
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First digital prototypeEntering data in report view is counterintuitive
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First digital prototypeUsers want to define more than one goal
42
Evaluation - methodology
1. Short introduction
2. Initial questionnaire ➲ personal questions
3. Think-aloud user test
4. SUS-questionnaire
43
Evaluation
• 5 users 21 - 25 years old
• 3/5 with overweight
• Focus on usability-issues
44
Evaluation - results
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Evaluation - results• Adding item(s) seems hard (4/7)
• ‘Vooruitgang’ is a better name (3/7)
• Some users (2/7) forget to indicate a moment when adding food items
• One user would like to have a better progress visualization in the images from the food triangle
• One user indicated that it is not possible to see the contribution of a food item
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Evaluation - resultsSUS - score : 90,5
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Evaluation - resultsSUS - score : 90,5
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Second digital prototypeUsers forget to indicate a moment
!
!
!
!
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Second digital prototypeProgress in food triangle elements
!
!
!
!
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Second digital prototypeContribution of an added item?
!
!
!
!
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Second digital prototype
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Second digital prototype
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Evaluation - methodology1. Short introduction
2. Initial questionnaire ➲ personal questions
3. Think-aloud user test
4. SUS-questionnaire
Due to lack of time: focus on usability
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Evaluation
• 11 users 21 - 58 years old
• 7/11 with overweight
• 9/11 want to lose weight
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Evaluation - resultsRelative importance of the features
!
!
!
!
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Evaluation - resultsScore (1= not important, 10= very important) of social features
!
!
!
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Evaluation - results1. Make an account
2. Add food item
3. Log off
4. Add activity
5. Look at badges
6. Register weight &BMI
7. Tips
8. Change goal
9. Personal settings
10.Register waist circumference & ABSI
11.Challenges
12.Setting notifications
13.Caloric monitor58
Evaluation - results1. Make an account
2. Add food item
3. Log off
4. Add activity
5. Look at badges
6. Register weight &BMI
7. Tips
8. Change goal
9. Personal settings
10.Register waist circumference & ABSI
11.Challenges
12.Setting notifications
13.Caloric monitor59
Evaluation - resultsSUS - score :79,5
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Evaluation - resultsSUS - score : 79,5
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Content• About the topic
• Literature study
• Design
• Low-fidelity prototypes
• High-fidelity prototypes
• Conclusion62
Remember: research question
!
Gain better lifestyle ➲ lose weight
• Easy adding of elements
• Motivation via gamification and social networkHow?
63
Conclusion• Design overall received a good score
(e.g. SUS scale)
• Items should be added efficiently & simple
• Feedback are useful➲ visual tools can help
• Gamification is not perceived as essential
• Social elements appear less relevant64
Questions?
65