as evidenced in practice(However, as evidenced in practice, this is arguable – by Popp, J., MacKean, G., Casebeer, A., Milward, H. B., & Lindstrom, R. Tamerlane)
as the evidence from practice shows((indicates, suggests) As the evidence from practice shows, a wide range of terms is used to denote performance as output – by Richard S. Williams)