This thread is stupid.
Well, I guess we agree to disagree.
Simply, compare their cancer mortality to those ( all other things being equal ) that never had "compound X" - that can serve as an initial benchmark.
You don't need a control group - you are simply comparing the women with implants suicide rate to the general population suicide rate.
This thread is stupid.
Wrangell, this isn't something you can just disagree on. This is a very basic fact in statistics.
The fact that you can say that you don't need a control group, I'm sorry to say, very accurately reflects that you don't these understand the issue.
Try suggesting to someone doing experimental chemotherapy studies that they don't need a control group, they can just look at the cancer mortality rates in the general population. Why do you think that all medical studies, all tests of the effects of new drugs, always have control groups? It is because they are necessary, without them you don't get any relevant results.
If you take the study you posted, women with suicide and drug/alcohol abuse tendencies could just be 3x as likely to get breast implants. Then breast implants have no impact. Or they could be even more likely to get implants, in which case breast implants reduces the risk of their tendencies surfacing, or vice versa. Or, breast implants could just in normal, healthy women increase the risk of suicide or drug/alcohol abuse (for some reason you've been very adamant that this isn't the case when I've mentioned this possibility earlier, I can't see where you get the facts to dismiss that possibility). You can't tell from that study what's going on. It has no relevant information on this issue of breast implants.
When people say that statistics lie, this is what they're referring to. People who don't understand the basics of statistics can be deceived because they can't grasp that a correlation alone don't explain anything, at all.
You're going to go through life and pick up a lot of random opinions based on information you've simply misunderstood.
You said " that nothing meaningful can be gleamed from the study " and - this is what what I ' disagreed ' on.
I understand it perfectly well.
Again, it is simply correlation / observational study.
No one claimed it " explained " anything - they simply observed a correlational relationship. Nothing more.
A correlation was found- nothing more.
btw - you never answered my earlier question - either time.....
For example, you gave an example earlier of ....
- Wolves have grey hair
- Bob has grey hair
= Bob is a wolf
Give me the equivalents from the study that highlights that the study is embracing your alleged " false syllogism " above .......
Wolf = .......' ? ' in the study
Bob = .......' ? ' in the study
Grey hair = .' ? ' in the study
Sigh. A single correlation is meaningless, which it really seems you don't get. You continue to disagree with that I find it irrelevant, yet go out of your way to demonstrate you know that it is just a irrelevant correlation.
The study just provided one argument for the syllogism. If you drew any conclusion from the study, you'd be making the false syllogism. If you don't draw any conclusion (ie the study is irrelevant), then obviously you're not making the false syllogism. The point is that if you think you this study says anything, then you're making the false syllogism.
And now you're going to say that "but it is relevant, it shows that...", and I'll say "that's just a correlation", and you'll say "but it warrants further study", and I'll say "that's not really relevant to this discussion about someone considering getting implants, that maybe one day in the future some psychologists are perhaps going to do a study".
If you don't think that any meaningful conclusion, relevant to this thread, can be reached from that study, could you just accept that it really is irrelevant and stop going on about how interesting it is? Otherwise, please post what you think is so interesting about it, other than perhaps some researches will be inspired to make a proper study in the future?