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I would consider a person who is addicted to prescription drugs [to be/as/ ' '] a drug addict.

Which choices are correct?
Thanks
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I see three possibilities
I would consider a person who is addicted to prescription drugs to be a drug addict.
I would consider a person who is addicted to prescription drugs as a drug addict.
I would consider a person who is addicted to prescription drugs (a drug addict) / an addict.
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New2grammarWhich choices are correct?
All the following are correct. (My symbolization is a little different from yours, but includes the same three possibilities. Parenthesization indicates "optional". )

I would consider a person who is addicted to prescription drugs ( [to be/as] ) a drug addict.
We [acknowledge / judge / proclaim ] him ( [to be / as] ) an expert.
It seems to me that the least used choice is as.
CJ
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Comments  
Do they mean the same thing?
Yes, the sentences have the same meaning.
Students: We have free audio pronunciation exercises.
 CalifJim's reply was promoted to an answer.
Thank you, CalifJim. I really appreciate that.