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Published: 01 December 2015
Figure 2 Predicted Monthly Premiums as Hospital HHI and Medical Group HHI Vary Figure 2. Predicted Monthly Premiums as Hospital HHI and Medical Group HHI Vary Sources: Authors' calculations using the following: Premium data: Covered California 2014 . Wage data: US Department of Labor More
Journal Article
Journal of Health Politics, Policy and Law (1 December 2015) 40 (6): 1179–1202.
Published: 01 December 2015
...Figure 2 Predicted Monthly Premiums as Hospital HHI and Medical Group HHI Vary Figure 2. Predicted Monthly Premiums as Hospital HHI and Medical Group HHI Vary Sources: Authors' calculations using the following: Premium data: Covered California 2014 . Wage data: US Department of Labor...
Journal Article
Journal of Health Politics, Policy and Law (1 February 1995) 20 (1): 137–169.
Published: 01 February 1995
... (Department of Justice and Federal Trade Commission 1992: 0 1S1). The market concentration analysis prescribed by the merger guidelines focuses on the Herfindhal-Hirschman Index (HHI), an established mea- sure of market concentration. The HHI equals the sum of the squared market shares for all...
Journal Article
Journal of Health Politics, Policy and Law (1 February 1995) 20 (1): 175–190.
Published: 01 February 1995
... index (HHI) to predict the federal government’s enforcement decisions. Such decisions, however, should not ultimately rely just on HHIs, but should rely at least as heavily on other market-specific informa- tion. Accordingly, the authors’ inability to predict enforcement decisions is not...
Journal Article
Journal of Health Politics, Policy and Law (1 August 2015) 40 (4): 689–703.
Published: 01 August 2015
... construct hospital concentration indexes from the American Hospital Association's 2010 annual hospital survey. We use hospital beds to measure each hospital's Herfindahl-Hirschman Index (HHI), a common measure of market concentration, ranging from 0.0 to 1.0. 1 An HHI of 1.0 implies a single monopoly...
Journal Article
Journal of Health Politics, Policy and Law (1 June 2006) 31 (3): 497–510.
Published: 01 June 2006
... in hospital markets at five-year intervals over the period 1985 – 2000.3 The table shows that the Herfindahl-Hirschmann Index (HHI)4 for U.S. hospitals has been steadily increasing over time. In par- ticular, the median HHI increased from 3,028 in 1985 to 3,995 in 2000. This is an increase of...
Journal Article
Journal of Health Politics, Policy and Law (1 October 2010) 35 (5): 771–795.
Published: 01 October 2010
... coverage across the treat- ment and comparison groups in a second way. Following a recent recom- mendation by Robert Entman (2007), the national media can be analo- gized to a marketplace of ideas. This comparison facilitates the use of the Hirschman-­Herfindahl Index (HHI), a measure of market...
Journal Article
Journal of Health Politics, Policy and Law (1 October 2016) 41 (5): 939–968.
Published: 01 October 2016
... 2007 ) as the factors enabling quality improvement. Limited measures of market competition were utilized, such as the Herfindahl–Hirschman Index (HHI), 1 the average number of empty nursing home beds, and excess demand (Mukamel, Spector, and Bajorska 2005 ; Nyman 1988 , 1989 ; Zinn 1994 ), as...
Journal Article
Journal of Health Politics, Policy and Law (1 December 2000) 25 (6): 1051–1081.
Published: 01 December 2000
Journal Article
Journal of Health Politics, Policy and Law (1 June 2008) 33 (3): 639–646.
Published: 01 June 2008
... Ethnic Disparities (Co-PI, SIP 25 – 99). Katherine L. Richards is the physical activity coordinator for the Hawaii State Department of Health, Healthy Hawaii Initiative (HHI). HHI is a large statewide initiative focusing on promotion of physical activity, nutrition, and tobacco cessation to the...
Journal Article
Journal of Health Politics, Policy and Law (1 August 1988) 13 (4): 635–662.
Published: 01 August 1988
... hospital mergers. The guidelines rely on the Herfindahl-Hirschman Index (HHI) to measure mar- ket concentration and to establish presumptive levels of concentration that will trigger action by the Justice Department. According to the guidelines, a merger that produces an HHI above 1,000 and that...
Journal Article
Journal of Health Politics, Policy and Law (1 April 2018) 43 (2): 229–269.
Published: 01 April 2018
... omitted reference group comprised hospitals that had margins of greater than zero and not greater than 3 percent. k Market competition was measured in accordance with the Hirschman-Herfindahl Index (HHI), which for purposes of the study was computed by summing the squared values of each hospital's...
Journal Article
Journal of Health Politics, Policy and Law (1 February 2009) 34 (1): 63–91.
Published: 01 February 2009
... incumbent effect, it would also be required that b3 + b4 < 0. All of these predictions are tested below. The model also includes several control variables. HHI is the Hirschman- Herfindahl Index, which is a measure of market concentration, for CA procedures among hospitals in the choice set for...
Journal Article
Journal of Health Politics, Policy and Law (1 August 2015) 40 (4): 705–710.
Published: 01 August 2015
... the organization (so the whole organization should, generally speaking, be in network for the insurer). This suggests that antitrust officials will be concerned about maximum market power, or maximum Herfindahl-Hirschman Index (HHI), for any horizontal part of the vertical chain. If an ACO is...
Journal Article
Journal of Health Politics, Policy and Law (1 August 2015) 40 (4): 711–744.
Published: 01 August 2015
... growing concentration of hospital markets and rising prices for hospital services. The Herfindahl-Hirschman Index (HHI) is a measure of how concentrated shares are within a market and is widely used as a measure of market structure (Gaynor 2011 ). Using HHI trends, studies document that US hospital...
Journal Article
Journal of Health Politics, Policy and Law (1 April 2015) 40 (2): 281–323.
Published: 01 April 2015
...-Hirschman index (HHI) and the number of years a state had operated a high-risk insurance pool prior to the ACA. 18 Moreover, we include an indicator of whether a state has implemented guarantee issue requirements or dedicated a carrier of last resort (facilitated access before ACA). We expect states with...
Journal Article
Journal of Health Politics, Policy and Law (1 August 2009) 34 (4): 593–615.
Published: 01 August 2009
... 1.413 (2.51)* (1.40) (1.09) Concentration (HHI) –4.435 4.433 1.692 (1.03...
Journal Article
Journal of Health Politics, Policy and Law (1 April 1994) 19 (2): 423–447.
Published: 01 April 1994
Journal Article
Journal of Health Politics, Policy and Law (1 February 2010) 35 (1): 95–126.
Published: 01 February 2010
... (HHI). 102 Journal of Health Politics, Policy and Law vector of hospital input prices, and ei is the error term of the equation. The error term can be decomposed as ei = vi + ui, where vi is random error, and ui consists of positive departures from the BPF. These positive...