This is the 5590th most frequent Polish word.
uważana
"Uważana" means "considered" or "regarded."
Uważana in this context denotes being held or regarded in a certain way by others.
Ona była uważana za najlepszego nauczyciela.
She was considered the best teacher.
Uważana here indicates the general perception or opinion about the book.
Książka jest uważana za klasyk literatury.
The book is considered a classic of literature.
Uważana conveys an assessment or judgment of a method's effectiveness.