My point is not that the clinic itself will be analyzing the data. It is that they are collecting data that are potentially available to researchers who might at some point find such data useful. Upon further thought, though, I bet this is just something that they keep as part of your patient history just in case something goes wrong. In the unlikely event of some weird problem they probably just want to be able to start ruling certain things out, and I don't think that there is anything wrong with that either. If the OP is interested then I absolutely would ask why they need to know. That's probably the best way to find out whether the questioning is problematic or not. I would ask the doctor rather than the nurses; it's more likely that the doctor will have a more accurate answer.
As far as getting funny looks, nurses do this all the time when you can't give them a quick answer. It's not good bedside manner, but unfortunately it happens all the time regardless of the situation or the clinic. After a fairly severe injury, I've had to "rate my pain from 1-10" on that stupid pain scale about a billion times, and I have the absolute worst time with it. In fact I often end up with some fraction of a "pain unit" and have gotten a lot of pretty weird looks for that. It's all innocent enough though. They need a number, and I'm not giving it to them. My dad has had the same problem at multiple hospitals and clinics. I'm not saying it's not annoying - I truly hate it. I'm just saying that this type of situation may not be as quite as nefarious as some seem to think. If the OP is uncomfortable with this doctor, then by all means I encourage her to find another. It's just that on these threads I've read some absolutely horrible advice given by doctors, and it seems to me that having to answer a couple of annoying questions isn't such a terrible thing if the doctor is otherwise supportive, a good diagnostician, and gives medically sound advice. If these other criteria are not met however, then I would be inclined to find a new doctor ASAP.