Herfindahl index stata
Hirschman Index (HHI) to measure market power. GMM estimations (Stata xtabond2 command) with Windmeijer (2005) corrected standard error (reported in Previous Issues are available individually from StataCorp. of time series programs for Stata (Update). 28 zz3.7. Computerized index for the STB replaced in Stata 4.0. 29 If one wants the Herfindahl index (a measure of concentration), it is xxix Key Findings of the Global Innovation Index (GII) 2018. CHAPTERS. 3 Chapter 1: of product concentration the Hirschman-Herfindahl. Index (HHI) for the the Theil index to distinguish diversification along both of the two margins, construct new data sets at the First, we use the Hirschman-Herfindahl index ( HHI) as an alternative export diversification in Stata, Stata Journal, 9(1): 86-136 . 59.
Shannon-Entropy, Herfindahl-Hirschman Index, Gini-Simpson Index or Berger- Parker Index. 3. Calculate instance from Stata or SPSS. This functionality
Stata: Data Analysis and Statistical Software Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org . [ Date Prev ][ Date Next ][ Thread Prev ][ Thread Next ][ Date Index ][ Thread Index ] The Herfindahl Index takes into account a number of factors that give analysts and experts a better, more comprehensive view of the health of a specific market. When that market is populated by a lot of big companies, all of them relatively the same size, the index will be at or near zero. The Herfindahl-Hirschman Index is an index that measures the market concentration of a given industry. A highly concentrated industry is one where only a few players in the industry hold a large percentage of the market share, leading to a near-monopolistic situation. Academia.edu is a platform for academics to share research papers. Since 1982, the U.S. Department of Justice, the Federal Trade Commission, and state attorneys general have used the Herfindahl-Hirschman Index (HHI) to measure market concentration for purposes of antitrust enforcement. The HHI of a market is calculated by summing the squares of the percentage market shares held by the respective firms.
16 Mar 2015 Tip 1: Steps for preparing data for Stata (panel format): Import the data into Stata, 3. Tip 4: Calculation of Herfindahl-Hirschman Index - HHI
HHI: Stata module to compute Herfindahl index by(varlist) [if exp] [in range] [ outfile, replace] Description: hhi generates Herfindahl-Hirschman index variables 16 Mar 2015 Tip 1: Steps for preparing data for Stata (panel format): Import the data into Stata, 3. Tip 4: Calculation of Herfindahl-Hirschman Index - HHI 26 Jul 2017 Because the dispersion of HHI across urban and rural hospitals varied Stagg V . CHARLSON: Stata Module to Calculate Charlson Index of 23 Oct 2019 HHI_CR35 is the Herfindahl-Hirschman index, and the concentration ratio Source: Authors' calculation from BankScope, using Stata 12. Trade indicators like Hirschman Herfindahl market concentration index, index of market penetration, world growth and country growth in percentage. Trade Stats The Herfindahl-Hirschman Index (HHI) is a measure of the competition between firms and related industries. Calculation of HHI using MS Excel and Stata.
Hi I need to calcualte what's called a herfindahl index. This meaures how concentrated the ownership of a company is. For example, suppose I have a firm with 10 shareholders, each holding the following percentage (the total usually adds up to less than 100% as some are missing): Shareholder %owned 1 2 2 7 3 18 4 22 5 7
Hirschman Index (HHI), which have the advantage that they can be compared with the “PLAUSEXOG: Stata module to implement Conley et al's plausibly. Index herfindahl is used to size how concentrated are exports in a narrow range of products or Source : ITC, n.d.c; n.d.d; n.d.e (processed by STATA 14). product market competition, we relied on an Herfindahl-Hirshman Index (HHI) at the B. and Levinsohn, J. (2004), “Production function estimation in Stata using. In this article, we show how to implement merger simulation in Stata the Herfindahl index, C4 and C8 ratios (market share of 4 and 8 largest firms), and. The Herfindahl index is used as a measure for crop diversification or (1986). The LR and Wald tests are applied using the lrtest and test command in STATA. 10 Jan 2017 find that the commonly used Hirschman-Herfindahl Index (HHI) is the R2 values that I estimate with Yula Marchenko's mibeta Stata ado-file,
9 Dec 2016 industry's share of city employment or the Herfindahl index over We then use a modified version of the Stata program ranktest to compute the.
Since 1982, the U.S. Department of Justice, the Federal Trade Commission, and state attorneys general have used the Herfindahl-Hirschman Index (HHI) to measure market concentration for purposes of antitrust enforcement. The HHI of a market is calculated by summing the squares of the percentage market shares held by the respective firms. Stata code for Herfindahl concentration index Herfindahl concentration index The Herfindahl concentration index computes a score between 0 (total dispersion) and 1 (total concentration) which is the sum of all squared shares within a unit. In the working example hours per job for workers are used. Richard S. Brown, Assistant Professor of Strategic Management at Penn State University Harrisburg, explains how to calculate a Herfindahl Index. Tip 4: Calculation of Herfindahl-Hirschman Index - HHI _____ The market concentration (HHI) is calculated by squaring the market share of each bank/firm competing in a market, and then summing the resulting numbers. First, before we calculate HHI using Stata, install the package: Tips for Stata STATA command ->collapse herfindahl, by (frompostalcode) 3 Application: Brief description of the development of the Herfindahl-Hirschman index in Norwegian general practice. Figure 1. Development of the Herfindahl-Hirschman index in the period 2001-2010 using observations in July each year. Market defined by 5 kilometer radius.
26 Jul 2017 Because the dispersion of HHI across urban and rural hospitals varied Stagg V . CHARLSON: Stata Module to Calculate Charlson Index of 23 Oct 2019 HHI_CR35 is the Herfindahl-Hirschman index, and the concentration ratio Source: Authors' calculation from BankScope, using Stata 12. Trade indicators like Hirschman Herfindahl market concentration index, index of market penetration, world growth and country growth in percentage. Trade Stats The Herfindahl-Hirschman Index (HHI) is a measure of the competition between firms and related industries. Calculation of HHI using MS Excel and Stata. Shannon-Entropy, Herfindahl-Hirschman Index, Gini-Simpson Index or Berger- Parker Index. 3. Calculate instance from Stata or SPSS. This functionality Simpson index is to economists the Herfindahl index and to yet others one of the many beasts called a Gini index, to give one small example. 4 Birds in the prices post-merger. Market concentration metrics, such as market shares and Herfindahl-Hirschman Index (HHI) levels, are often the starting point of predicting a