Description

annual observations of 181 firms from 1983 to 1991

number of observations : 1629

country : world

economic topic : producer behavior

econometrics topic : count data

Usage

Format

A dataframe containing :

firm

firm's id

year

year

sector

firm's main industry sector, one of aero (aerospace), chem (chemistry), comput (computer), drugs, elec (electricity), food, fuel (fuel and mining), glass, instr (instruments), machin (machinery), metals, other, paper, soft (software), motor (motor vehicules)

geo

geographic area, one of eu (European Union), japan, usa, rotw (rest of the world)

patent

numbers of European patent applications

rdexp

log of R and D expenditures

spil

log of spillovers

Source

Cincer, Michele (1997) “Patents, R \& D and technological spillovers at the firm level : some evidence from econometric count models for panel data”, Journal of Applied Econometrics, 12(3), may–june, 265–280.

References

Journal of Applied Econometrics data archive : http://qed.econ.queensu.ca/jae/.