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Table 5 Event attributes

From: Annotation and detection of drug effects in text for pharmacovigilance

Attribute Description Possible values
Negated Denotes whether or not there is explicit evidence in the sentence that the event should be negated True: Explicit negation evidence is present
False: There is no evidence that the event should be negated (default value)
Speculated Denotes whether there is some degree of uncertainty or speculation as to whether the event will actually take place True: There is explicit mention that:
• there is uncertainty about whether the  event will actually take place
• there is a risk that the event will take place
• the event may not take place all of the time
• there is a lack of evidence/knowledge about the truth of the event
False: There is no evidence of any of the above (default value)
Manner Denotes whether the manner of the event (i.e., the rate, intensity, strength or level of significance of the event) is higher or lower than would be expected by default Low: There is explicit indication that the manner of the event is lower than would be expected by default, e.g., it happens with low intensity, happens rarely or is not considered to be significant
High: There is explicit indication that the manner of the event is higher than would be expected by default, e.g., it happens with high intensity, it happens very frequently, or is considered to be very significant
Neutral: There is no explicit indication that the manner of the event is higher or lower than would be expected by default (default value)