This week in the official (crafting) forums, there was a post by Reorx Holybeard who had gathered hireling statistics over 155 days.
While the math isn’t perfect, I was interested on the method used. I’ve been thinking about doing some hireling analysis myself and having this information reduces the need to completely “re-invent the wheel”.
Reorx used UESP log add-on and then parsed the data using the scripting language python. Interesting.