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by all_blue_chucks 2077 days ago
This is promising technology, but the words "just barely statistically significant" should probably be in the first paragraph of articles covering this - not halfway down the article.
3 comments

"Just barely statistically significant" but the MLE is a 6x reduction in hospital visits. There's huge potential here, but our ability to know has been hampered by study size.
yes, I think this is a prime example of the "early results are promising but more testing is needed" platitude
That's not quite the right takeaway. That 6x reduction is dependent on the p-value, which in turn is dependent on the sample size. The larger the sample, the smaller the p-value, and that 6x reduction will likely shrink as well. It's extremely rare for a treatment in medicine to have a 6x benefit.
> That 6x reduction is dependent on the p-value, which in turn is dependent on the sample size

No, the 6x reduction MLE is -not- dependent on the p-value, and this shows a fundamental misunderstanding of the statistics. That said, the overall distribution of possibilities skews on the "lesser effect" side, so if you had to guess which way the estimate would move with another trial, you're more likely to get a smaller effect than a larger one.... 6x is still the most likely single value.

> It's extremely rare for a treatment in medicine to have a 6x benefit.

All kinds of drugs and treatments for acute disease have a > 6x benefit. We have plenty of conditions that have a horrible prognosis untreated and great outcomes treated.

Have a bad bacterial infection? Odds are abx will clear that right up and you'd die otherwise. Active TB has a ~60% death rate within 5 years untreated, while with normal treatment regimens only has a relapse (not death) rate of a few percent in that 5 year period. Most vaccines have high efficacies. Standard treatments can prevent the vast majority of malaria deaths.

Anyway, ‘just barely significant’ is significant.
That's for one of several results, and the whole point of those words appearing is to imply that it contrasts with the other results.

I mean, arguably reporting on things at this stage is super premature, the whole article shouldn't exist, we shouldn't be reading it, the whole news cycle is garbage, blah blah blah rant rant rant.... but it would be absurd to headline the article with "the least significant, of several significant results, was only barely significant".

They didn't tell us how many patients. Could be important, could be noise. Also, there were two serious reactions to infusion of one of the drugs.

It's progress. A few months ago nothing worked. It was just ventilators, supportive treatment, and wait to see who survived. Now, some treatments sort of work. Management of the disease is becoming possible.

In this study, the drugs were given early, and to patients who were not sick enough to require hospitalization. Not clear if this helps with the more serious cases.

What are the numbers "112" and "156" doing in the article?