Before revision: Generally speaking, treatment levels may be finite or infinite as well as ordinal or cardinal, which leads to a large collection of possible treatment effects to be studied in applications.Cattaneo, M. D. (2010): Multi-valued Treatment Effects.
After revision: DescriptionGenerally speaking, treatment levels may be finite or infinite as well as ordinal or cardinal, which leads to a large collection of possible treatment effects to be studied in applications.Cattaneo, M. D. (2010): Multi-valued Treatment Effects.