ANALYSIS with INTERACT > Lag Sequential Analysis > Lag Sequential Analysis versus Contingency Analysis

An other routine, that searches for certain sequences, is called Contingency Analysis. The main differences between those routines and their resulting values are:

oThe Contingency Analysis routine allows you to create new Events, containing new Codes and Classes, representing the latencies found - for further analysis.

oThe Sequence Analysis routine considers ALL Codes currently visualized in the Timeline Chart, instead of only the two fixed Codes selected in the Contingency analysis.

oThe Contingency Analysis does not care about any Codes coded in-between; it only searches for the appearance of the two selected Codes, within the given time frame.

oThe Contingency Analysis always searches within a time frame, in which the sequence needs to occur, AND you can determine whether this interval starts at the start time or offset of the preceding Code.

oSequential Analysis results are always based on the next* Code found, start time after start time, independent of the Class.

oThe Sequence analysis offers multiple search routines: You can limit the routine to specific Codes, because it is run from within the Timeline Chart. I can search for any next Code, search within a time frame or search for every xth Code. You can change those settings as described in Accuracy of Calculation.

All this means, that the results of both analysis routines can differ quite a bit. You only get the same results, if you select only the exact same two Codes for visualization the Timeline Chart, as you used in the Contingency Analysis AND you set the Contingency time frame wide enough, starting from start time.

Note: The accuracy of the Sequential analysis results, can be adapted in the Applicaiotn Settings dialog, as is explained in Accuracy of calculation.