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*targettotalliabilities
*targettotalliabilities11
===Additional Variables===
The following variables have now been added to the data:
*aht: uses our HT definition that does not included IT or BT, on the acquiror's NAIC code
*aht_pb: uses the Paytas-Berglund definition of HT
*aht_hecker: uses the Hecker definition of HT
*aht_pb_notitbt: uses the Paytas-Berglund definition of HT, but removes IT and BT
*aht_hecker_notitbt: uses the Hecker definition of HT, but removes IT and BT
*tht: 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 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.
The references for the other High-Tech (HT) definitions are:
*Hecker, Daniel E.(2005), "High-technology employment: a NAICS-based update", Monthly Labor Review (July): 57-72. http://www.bls.gov/opub/mlr/2005/07/art6full.pdf
*Paytas, Jerry and Berglund, Dan (2004), "Technology Industries and Occupations for NAICS Industry Data", Carnegie Mellon University, Center for Economic Development and State Science & Technology Institute.
==NAIC Codes==
