Longitudinal studies are important for startups to: 1) Build user habits with a product rather than focus only on conversions by testing over a long period of time. 2) Fuel iterative user-centered design through qualitative feedback collected over multiple user sessions. 3) Be run inexpensively through targeted ads, evangelists who refer users, and free online tools for planning, execution, and organization.

1. Longitudinal Studies for the
Lean Startup
Gabriel Miller-Phillips, Director Product & UX, Cohero Health

2. Hi! I’m Gabriel.
❖ UX & Product
❖ NYC & Munich
❖ Lead product at Cohero Health

3. ❖ Connected health
❖ IoT
❖ Solves “dumb” data
What does Cohero Health do?

4. What’s asthma and how do
you control it?

5. What I’ll cover.
❖ What are longitudinal studies, and why do one?
❖ How can I run one on the cheap at my startup?
❖ How do I plan it, execute it, and stay organized?
❖ How to collect data and generate insights

6. What’s a longitudinal study and when
is it important?
❖ Qualitative not quantitative
❖ Build habits, not conversions
❖ Fuels iterative user-centered design

7. Source: https://www.nngroup.com/articles/why-you-only-need-to-test-with-5-users
Qualitative, not quantitative.

8. Source: BJ Fogg, PH.D | Persuasive Technology Lab, Stanford University | http://www.behaviormodel.org
Build habits, not conversions.

9. Source: Nir Eyal | https://www.nirandfar.com/2017/09/how-to-trigger-product-usage-that-sticks.html
Build habits, not conversions.

10. Iterative design
❖ Design
❖ Build
❖ Test
❖ Repeat

11. How can I run on the cheap?
❖ Targeted ads
❖ Evangelists
❖ Free tools

12. Pay per click.

13. Evangelists.

14. Free tools.

15. Template available: https://trello.com/b/mAKJuUbj
Plan it, run it, organize it.

16. Thanks for paying attention!
Reach me at gfmphillips@gmail.com
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