The figure is extraordinary low compared with the whole of Asia as well as developed countries mainly in Europe and the United States, and those involved in Christianity in Japan once described this situation as "the wall of one percent."
欧米を中心とする先進諸国は勿論、アジア全体と比較しても異例の低比率のため、日本のキリスト教関係者は、かつてこれを「1%の壁」と形容していたこともある。