The reason the number of non-therapeutic abortions is not known is that many clinics are reluctant to disclose their revenues. Moreover, because many abortions are legally questionable and clinics want to avoid trouble with the law, they do not report the number of abortions they perform.
原因是多數婦產科診所不願意實際收入曝光，再加上有些案例遊走法律邊緣，恐有吃官司之虞，因而一向隱匿不報。