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DanArmak comments on Stupid Questions December 2014 - Less Wrong Discussion
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In medicine we try to make people rate their symptoms, like pain, from one to ten. It's pretty much never under 5. Of course there's a selection effect and people don't like to look like whiners but I'm not convinced these fully explain the situation.
In Finland the lowest grade you can get from primary education to high school is 4 so that probably affects the situation too.
How do you then interpret their responses? Do you compare only the responses of the same person at different times, or between persons (or to guide initial treatment)? Do you have a reference scale that translates self-reported pain to something with an objective referent?
Yes. There's too much variation between persons. I also think there's variation between types of pain and variation depending on whether there are other symptoms. There are no objective specific referents but people who are in actual serious pain usually look like it, are tachycardic, hypertensive, aggressive, sweating, writhing or very still depending on what type of pain were talking about. Real pain is also aggravated by relevant manual examinations.