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?:definition
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A relationship between a planned activity and some criteria to determine if the activity should occur where all activities are intended to occur at some point in the context of a particular study or experiment. EXAMPLE(S): Only perform a certain lab test if drug X was administered. (target = another activity) Only perform a substance administration of drug X if the blood pressure was over some threshold number. (target = observation result from another activity that is an observation) Only perform a substance administration of drug Y if the blood pressure was over some threshold number and either the result of a certain lab test was positive or the subject\'s temperature was elevated, i.e. \'(A and (B or C))\'. OTHER NAME(S): NOTE(S): The criteria may be one of the following: - another planned activity where the source activity does not occur unless the target activity has occurred - the defined outcome of another planned activity where the source activity does not occur unless the target activity outcome has occurred - a planned group of other criteria that may be composed of a mix of other activities, observation results and/or other groups To evaluate whether the contingency was satisfied, the simple existence of a PerformedActivity (or subclass) related to the DefinedActivity (or subclass) is not enough by itself. The PerformedActivity.statusCode and PerformedActivity.negationIndicator must also be checked to ensure that the activity was actually performed. PerformedActivity.statusCode must be \'Completed\' and PerformedActivity.negationIndicator must not be \'true\'.
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