Given the task definition and input, reply with output. You are given a sentence in Japanese. Your job is to translate the Japanese sentence into Italian.

ですからこの理論は治療によって有効性が証明されたということです

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Così la teoria, in un certo senso, viene convalidata dal trattamento.