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→Additional Variables
The following variables have now been added to the data:
*aht: uses Uses our HT definition that does not included IT or BT, on the acquiror's NAIC code*aht_pb: uses Uses the Paytas-Berglund definition of HT*aht_hecker: uses Uses the Hecker definition of HT*aht_pb_notitbt: uses Uses the Paytas-Berglund definition of HT, but removes IT and BT*aht_hecker_notitbt: uses Uses the Hecker definition of HT, but removes IT and BT*tht: the The same as above but on the target's NAIC code. THIS IS THE ONE YOU WANT FIRST.
*tht_pb
*tht_hecker
*tht_pb_notitbt
*tht_hecker_notitbt
* patents: a A binary variable indicating whether the firm has patent (1) or not (0) applications filed up to an including the year of the announcement of the acquisition
*patentcount: The count of the above patents
*patentdata: Takes the value 1 if the announcement year equal to or less than 2006, so the firm can have all of its patents recorded (from 1975 forward), and 0 if the patent data will be inherently truncated.
