Is the Relation Between Analgesics and Renal Disease Coincidental and not Causal?

Abstract

This paper is a short survey over the relation between analgesics and renal disease. The author has in 4 different investigations studied this relationship in more than 2000 patients in total. It was not possible to find any definite relation between analgesics and renal disease. The only explanation of this discrepancy between other''s and our own results may be, that our studies (1, 2 and 4) contrary to the majority of investigations in this field are controlled and consecutive and this points, in my opinion, to the possibility that the connection between analgesics and renal disease is coincidental and not causal.