I'm Sean Mayberry, and I’m the Founder/ Chief Executive Officer of StrongMinds. I will spend time on the Monday after the Thanksgiving holiday answering questions here (though I may get to some questions sooner).
A little background information about me:
- I founded StrongMinds in 2013. We are a social enterprise/NGO that treats depression in low-income women and adolescents by providing group interpersonal therapy (IPT-G) delivered by lay community health workers. StrongMinds is the only organization scaling a cost-effective solution to the depression epidemic in Africa.
- Our model developed from the findings of a randomized controlled trial in Uganda in 2002 that had remarkable success in treating depression with group interpersonal psychotherapy (IPT-G). The study, by researchers from Johns Hopkins University (JHU), used lay community workers with only a high school education.
- I left my position as the CEO of a global antipoverty organization and founded
StrongMinds, concentrating in Uganda, the site of the previous randomized controlled trial. I used my family’s savings to accomplish this and volunteered full-time for the first 18 months until supporters were identified. We would seek out individuals with an interest in being data-driven, entrepreneurial, people-focused, passionate, open, and collaborative. Those traits eventually informed the core values of the company culture at StrongMinds. - StrongMinds has now treated over 160,000 women with depression to date in Uganda and Zambia. On average, 80% of the women we treat remain depression-free six months after the conclusion of therapy. When our clients become depression-free, they can work more, and their kids eat and attend school more regularly. They also report that they no longer feel isolated and have people to turn to for social support. By the end of 2022, we will have treated over 210,000 women and adolescents through our work.
- Drawing on evidence from over 80 academic studies, Happier Lives Institute has found that the group interpersonal therapy provided by StrongMinds is almost ten times more cost-effective than giving cash to people in extreme poverty (a standard benchmark for aid effectiveness).
- I have been honored to present at a few Effective Altruism events. We love that the
the community has taken such an interest in StrongMinds’ approach centered around data collection, transparency, cultural competence/appropriateness, and human well-being.
Please ask me anything! I look forward to answering all of your questions.
UPDATE: I'm sorry for the delay in responding, but I wanted to take the time to be thoughtful and thorough with each of my responses.
Many thanks for doing this AMA!
I'm personally excited about more work in the EA space on topics around mental health and subjective well-being, and was initially excited to see StrongMinds (SM) come so strongly recommended. I do have a few Qs about the incredible success the pilots have shown so far:[1]
[Edit: I note that the 99% figure in the phase 2 trial was disregarded, but the 94% figure in phase 1 trial wasn't, despite presumably the same methodology? Also curious about the separate analysis that came to 92%, which states: "Since this impact figure was collected at a regular IPT group meeting, as had been done bi-weekly throughout the 12- week intervention, it is unlikely that any bias influenced the figure." I don't quite understand how collection at a regular IPT group meeting makes bias unlikely - could you clarify this? Presumably participants knew in advance how many weeks the intervention would be?]
Thanks again!
(Commenting in personal capacity etc)
[Edited after Joel's response to include Q7, Q8, and an update to Q1c and Q5, mainly to put all the unresolved Qs in one place for Sean and other readers' convenience.]
[Edited to add this disclaimer.]
[Edited to include a link to a newer post StrongMinds should not be a top-rated charity (yet), which includes additional discussion.]
Apologies in advance if I've missed anything - I've only briefly skimmed your website's publications, and I haven't engaged with this literature for quite a while now!
Quick primer on NNT for other readers. Lower = better, where NNT = 1 means your treatment gets the desired effect 100% of the time.
SM's results of 95% depression-free (85% after the 10% adjustment for social desirability bias) give an EER of 0.15 after adjustment. By a more conservative estimate, based on this quote (pg 3): "A separate control group, which consisted of depressed women who received no treatment, experienced a reduction of depressive symptoms in only 11% of members over the same 12-week intervention period" and assuming all of those are clinically significant reductions in depressive symptoms, the CER is 0.89, which gives an NNT of 1 / (0.89 - 0.15) = 1.35. The EER can be adjusted upwards because not all who started in the treatment group were depressed, but this is only 2% and 6% for phase 1 and 2 respectively - so in any case the NNT is unlikely to go much higher than 1.5 even by the most conservative estimate.
They also concluded: "We did not find convincing evidence supporting or refuting the effect of interpersonal psychotherapy or psychodynamic therapy compared with ‘treatment as usual’ for patients with major depressive disorder. The potential beneficial effect seems small and effects on major outcomes are unknown. Randomized trials with low risk of systematic errors and low risk of random errors are needed."
See Appendix B, pg 30. for more context about what the PHQ-9 scoring is like.
As pointed out in the report (pg 9):
% clients reached by partners:
20392 / 42482 in 2021
33148 / (33148+8823) in 2022
Thank you! I appreciate your curiosity, and I'm not put off by the questions or anything; it's just many of them are not in my area of expertise, and this happens to be a pretty busy time of year at StrongMinds. It may take some time to fully gather what you're asking for. We aren't a large research institute by any means, so our clinical team is relatively small. Additionally, some of the work you are referencing is nearly a decade old, so we have shifted some of the ways we operate to be more effective or better based on our learnings. That said, I will ... (read more)