ABSTRACT
This chapter describes the raw data, the variables that will be used in the analysis and how they are constructed, the overall structure of the proposed analysis and the methods that will be used to test the hypotheses. The raw data recorded was then used to construct industry and firm level control variables, and innovation/adoption history and performance (survival and market share) variables for each firm for each year it participated in the pacemaker industry. The data on pacing firms that entered and exited the industry between 1959 and 1990, and the innovations in pacemaker technology that each firm implemented during the period in which it participated in the industry were collected from multiple secondary sources. Firms are more likely to exit by being acquired during later years of the incremental era as pacing technology becomes increasingly complex and firms consider diversifying into related technological sub fields.
