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From |
west--@libero.it |

To |
"statalist" <statalist@hsphsun2.harvard.edu> |

Subject |
st: How to generate a cumulative sum (capital stock) |

Date |
Thu, 25 Oct 2007 18:36:55 +0200 |

Dear all, I need some help to compute a capital stock series from a gross investment series. My primary problem is that I have to estimate the initial capital stock (K_0 ) for each firm. As a general rule, it is used the book value of fixed capital (K) in the first year of data (e.g. 1996) for each firm. How can I command Stata to consider this first observation (firm by firm) and then compute a capital stock series, using a perpetual inventory and a constant rate of depreciation? A previous post doesn't help me much on this point. These are the data. Panl oif 300 firms, 10 years (1996-2006) k = capital stock I = capital investment d [delta] = 0.05 The evolution of the real capital stock is: K_t+i = (1 - d)*K_t+i-1 + I_t+i Hope someone help me. I would appreciate other suggestions too! Thanks. Damiano Rossi * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

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