Intervention-oriented decision making has no formal rules for determining when to change programs, but has some guidelines
Generally, changes between adjustment phases are analyzed.
Sometime after 5 days (which is the minimum number for evaluating an intervention), but no longer than 15 days (the maximum number of days for allowing any program to run), analyze the data and develop a program change.
Purpose is to compare data before the intervention to that following the intervention using analyses of (a) change in level, (b) slope, and (c) variability.
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