> I am assuming the kids who stopped having the issues would have dropped out at a higher rate. If a kid is having an issue their parents would want them to remain in to help find a treatment for the kid.
This seems like a reasonable theory, but it seems just as likely to me that as things get worse people are more likely to decide this isn't helping and drop out. Which goes to the point of the rest of your comment, the dropout rate calls the whole study into question. Otherwise we are left with guesswork and assumptions.
This seems like a reasonable theory, but it seems just as likely to me that as things get worse people are more likely to decide this isn't helping and drop out. Which goes to the point of the rest of your comment, the dropout rate calls the whole study into question. Otherwise we are left with guesswork and assumptions.