has decreased by more than x between each of last n results is used to detect cases in which the values for an attribute have a decreasing trend. The condition will be true for a case if the current sample value is a number and, amongst the previous n numerical samples, each is smaller than the previous by more than x. The change can be expressed in either absolute or percentage terms.
For example, given the following case fragment:
01 Jun 03 20 Jun 03 30 Jun 03 15 Oct 03 02 Nov 03 ABC 2.3 2.0 1.8 1.6 1.3 DEF 5.1 4.0 2.9 GHI 13.1 11.5 10.1 9.0
ABC has decreased by more than .1 between each of last 5 results
DEF has decreased by more than 1.0 between each of last 3 results
GHI has decreased by more than 10 percent
between each of last 4 results