So I have several question on the Favorite Weapon general stat.

1. Can staves be listed as a favorite weapon? Wabbajack, Skull of Corruption, Staff of Fireball, Staff of Magnus, etc...
2. How many times do I have to use a weapon for it to be listed?
3. The console command ModPCMiscStat can change all misc stats that are integer based but won't work with stats based on words. Is there a workaround for this?

I'm asking these questions because my character has a weapon listed that came from a mod that adds Dragonbone Weapons. I read somewhere here that Dawnguard will be introducing Dragonbone Weapons and I want to disable the said mod to remove what conflicts will happen between the two. I can't just disable the said mod because when disabling a mod that has a part of it listed in your misc stat CTD's whenever you open the general stats tab.

To answer your first question: More than likely, just like any other weapon or armor piece.
To answer your second question: There isn't a set number of times you have to use a weapon you simply have to use it more often than any other weapon you use.

I cannot answer question 3 as I am a console gamer.

Sorry for the late reply and thanks. I've been using Wabbajack for a while now and it seems that I need to use it a little bit more.

I dunno, I've been using a custom named daedric sword for a while and it just says "Daedric Sword."

As for that console command, I've never used it, but I'd look it up on the uesp maybe? Most reliable place I can think of, unless someone here uses it.

Sorry for bumping this but I just want to add what I've found out about the Favorite Weapon stat.

Only melee and bows are allowed to be listed. I tested this by creating a new game (latest patch) and added staves like Wabbajack, a Staff of Firebolt and Keening. Neither staff were registered in the favorite weapon stat but keening did.

Thanks to Griffix4 and ikillpeople for their help.

Hope this helps someone.