The authors would like to acknowledge the generous help of Bennett McCallum.
To reproduce the results in their paper, QPRODA must be divided by 1439. This conversion factor transforms gross production of chicken into the boneless equivalent that is used as the consumption variable.
These data are from Dennis Epple and Bennett T. McCallum (2006)"Simultaneous Equation Econometrics: The Missing Example," Economic Inquiry, 44(2), 374-384.
variables are not logarithms.
real variables constructed as pc = pchick/cpi pb = pbeef/cpi