IDEAS home Printed from https://ideas.repec.org/p/iza/izadps/dp12731.html
   My bibliography  Save this paper

How Do Low-Income Enrollees in the Affordable Care Act Marketplaces Respond to Cost-Sharing?

Author

Listed:
  • Lavetti, Kurt

    (Ohio State University)

  • DeLeire, Thomas

    (Georgetown University)

  • Ziebarth, Nicolas R.

    (ZEW)

Abstract

The ACA requires insurers to provide cost-sharing reductions (CSRs) to low-income consumers on the marketplaces. We link 2013-2015 All-Payer Claims Data to 2004-2013 administrative hospital discharge data from Utah and exploit policy-driven differences in the value of CSRs that are solely determined by income. We find that enrollees with lower cost sharing have higher levels of health care spending, controlling for past health care use. We estimate the demand elasticity of total health care spending to be -0.10, but find larger elasticities for emergency room care, lifestyle drugs, and low-value care. We also find positive cross-price elasticities between outpatient and inpatient care.

Suggested Citation

  • Lavetti, Kurt & DeLeire, Thomas & Ziebarth, Nicolas R., 2019. "How Do Low-Income Enrollees in the Affordable Care Act Marketplaces Respond to Cost-Sharing?," IZA Discussion Papers 12731, Institute of Labor Economics (IZA).
  • Handle: RePEc:iza:izadps:dp12731
    as

    Download full text from publisher

    File URL: https://docs.iza.org/dp12731.pdf
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Yan Zheng & Tomislav Vukina & Xiaoyong Zheng, 2021. "Risk aversion, moral hazard, and gender differences in health care utilization," The Geneva Risk and Insurance Review, Palgrave Macmillan;International Association for the Study of Insurance Economics (The Geneva Association), vol. 46(1), pages 35-60, March.
    2. Chiappori, Pierre-Andre & Durand, Franck & Geoffard, Pierre-Yves, 1998. "Moral hazard and the demand for physician services: First lessons from a French natural experiment," European Economic Review, Elsevier, vol. 42(3-5), pages 499-511, May.
    3. Amanda Kowalski, 2016. "Censored Quantile Instrumental Variable Estimates of the Price Elasticity of Expenditure on Medical Care," Journal of Business & Economic Statistics, Taylor & Francis Journals, vol. 34(1), pages 107-117, January.
    4. Frean, Molly & Gruber, Jonathan & Sommers, Benjamin D., 2017. "Premium subsidies, the mandate, and Medicaid expansion: Coverage effects of the Affordable Care Act," Journal of Health Economics, Elsevier, vol. 53(C), pages 72-86.
    5. Joseph G. Altonji & Todd E. Elder & Christopher R. Taber, 2005. "Selection on Observed and Unobserved Variables: Assessing the Effectiveness of Catholic Schools," Journal of Political Economy, University of Chicago Press, vol. 113(1), pages 151-184, February.
    6. Liran Einav & Amy Finkelstein & Stephen P. Ryan & Paul Schrimpf & Mark R. Cullen, 2013. "Selection on Moral Hazard in Health Insurance," American Economic Review, American Economic Association, vol. 103(1), pages 178-219, February.
    7. Jason Abaluck & Jonathan Gruber, 2011. "Choice Inconsistencies among the Elderly: Evidence from Plan Choice in the Medicare Part D Program," American Economic Review, American Economic Association, vol. 101(4), pages 1180-1210, June.
    8. Zarek C. Brot-Goldberg & Amitabh Chandra & Benjamin R. Handel & Jonathan T. Kolstad, 2017. "What does a Deductible Do? The Impact of Cost-Sharing on Health Care Prices, Quantities, and Spending Dynamics," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 132(3), pages 1261-1318.
    9. Aviva Aron-Dine & Liran Einav & Amy Finkelstein, 2013. "The RAND Health Insurance Experiment, Three Decades Later," Journal of Economic Perspectives, American Economic Association, vol. 27(1), pages 197-222, Winter.
    10. Manning, Willard G, et al, 1987. "Health Insurance and the Demand for Medical Care: Evidence from a Randomized Experiment," American Economic Review, American Economic Association, vol. 77(3), pages 251-277, June.
    11. Chandra, Amitabh & Gruber, Jonathan & McKnight, Robin, 2014. "The impact of patient cost-sharing on low-income populations: Evidence from Massachusetts," Journal of Health Economics, Elsevier, vol. 33(C), pages 57-66.
    12. Mullahy, John, 1998. "Much ado about two: reconsidering retransformation and the two-part model in health econometrics," Journal of Health Economics, Elsevier, vol. 17(3), pages 247-281, June.
    13. Nicolas Ziebarth, 2014. "Assessing the effectiveness of health care cost containment measures: evidence from the market for rehabilitation care," International Journal of Health Economics and Management, Springer, vol. 14(1), pages 41-67, March.
    14. Badi H. Baltagi & Raffaele Lagravinese & Francesco Moscone & Elisa Tosetti, 2017. "Health Care Expenditure and Income: A Global Perspective," Health Economics, John Wiley & Sons, Ltd., vol. 26(7), pages 863-874, July.
    15. John Mullahy, 1998. "Much Ado About Two: Reconsidering Retransformation and the Two-Part Model in Health Economics," NBER Technical Working Papers 0228, National Bureau of Economic Research, Inc.
    16. David Cesarini & Erik Lindqvist & Robert Östling & Björn Wallace, 2016. "Wealth, Health, and Child Development: Evidence from Administrative Data on Swedish Lottery Players," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 131(2), pages 687-738.
    17. McKnight, Robin, 2006. "Home care reimbursement, long-term care utilization, and health outcomes," Journal of Public Economics, Elsevier, vol. 90(1-2), pages 293-323, January.
    18. Michael J. Dickstein & Mark Duggan & Joseph Orsini & Pietro Tebaldi, 2015. "The Impact of Market Size and Composition on Health Insurance Premiums: Evidence from the First Year of the ACA," NBER Working Papers 20907, National Bureau of Economic Research, Inc.
    19. Leemore Dafny & Jonathan Gruber & Christopher Ody, 2015. "More Insurers Lower Premiums: Evidence from Initial Pricing in the Health Insurance Marketplaces," American Journal of Health Economics, MIT Press, vol. 1(1), pages 53-81, Winter.
    20. Hitoshi Shigeoka, 2014. "The Effect of Patient Cost Sharing on Utilization, Health, and Risk Protection," American Economic Review, American Economic Association, vol. 104(7), pages 2152-2184, July.
    21. Natalie Cox & Benjamin Handel & Jonathan Kolstad & Neale Mahoney, 2015. "Messaging and the Mandate: The Impact of Consumer Experience on Health Insurance Enrollment through Exchanges," American Economic Review, American Economic Association, vol. 105(5), pages 105-109, May.
    22. Jason Abaluck & Jonathan Gruber, 2011. "Heterogeneity in Choice Inconsistencies among the Elderly: Evidence from Prescription Drug Plan Choice," American Economic Review, American Economic Association, vol. 101(3), pages 377-381, May.
    23. Willard Manning, 2012. "Dealing with Skewed Data on Costs and Expenditures," Chapters, in: Andrew M. Jones (ed.), The Elgar Companion to Health Economics, Second Edition, chapter 44, Edward Elgar Publishing.
    24. Saltzman, Evan, 2019. "Demand for health insurance: Evidence from the California and Washington ACA exchanges," Journal of Health Economics, Elsevier, vol. 63(C), pages 197-222.
    25. Manning, Willard G. & Basu, Anirban & Mullahy, John, 2005. "Generalized modeling approaches to risk adjustment of skewed outcomes data," Journal of Health Economics, Elsevier, vol. 24(3), pages 465-488, May.
    26. Amy Finkelstein & Sarah Taubman & Bill Wright & Mira Bernstein & Jonathan Gruber & Joseph P. Newhouse & Heidi Allen & Katherine Baicker, 2012. "The Oregon Health Insurance Experiment: Evidence from the First Year," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 127(3), pages 1057-1106.
    27. Lilliard E. Richardson & Tansel Yilmazer, 2013. "Understanding the Impact of Health Reform on the States: Expansion of Coverage through Medicaid and Exchanges," Journal of Consumer Affairs, Wiley Blackwell, vol. 47(2), pages 191-218, July.
    28. NicolasR. Ziebarth, 2010. "Estimating Price Elasticities of Convalescent Care Programmes," Economic Journal, Royal Economic Society, vol. 120(545), pages 816-844, June.
    29. Deb, Partha & Trivedi, Pravin K., 2002. "The structure of demand for health care: latent class versus two-part models," Journal of Health Economics, Elsevier, vol. 21(4), pages 601-625, July.
    30. Amitabh Chandra & Jonathan Gruber & Robin McKnight, 2010. "Patient Cost-Sharing and Hospitalization Offsets in the Elderly," American Economic Review, American Economic Association, vol. 100(1), pages 193-213, March.
    31. Amanda Kowalski, 2014. "The Early Impact of the Affordable Care Act, State by State," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 45(2 (Fall)), pages 277-355.
    32. Hendrik Schmitz & Nicolas R. Ziebarth, 2017. "Does Price Framing Affect the Consumer Price Sensitivity of Health Plan Choice?," Journal of Human Resources, University of Wisconsin Press, vol. 52(1), pages 88-127.
    33. Getzen, Thomas E., 2000. "Health care is an individual necessity and a national luxury: applying multilevel decision models to the analysis of health care expenditures," Journal of Health Economics, Elsevier, vol. 19(2), pages 259-270, March.
    34. Cockx, Bart & Brasseur, Carine, 2003. "The demand for physician services: Evidence from a natural experiment," Journal of Health Economics, Elsevier, vol. 22(6), pages 881-913, November.
    35. Michael Gerfin & Martin Schellhorn, 2006. "Nonparametric bounds on the effect of deductibles in health care insurance on doctor visits – Swiss evidence," Health Economics, John Wiley & Sons, Ltd., vol. 15(9), pages 1011-1020, September.
    36. Leemore Dafny & Jonathan Gruber & Christopher Ody, 2015. "More Insurers Lower Premiums: Evidence from Initial Pricing in the Health Insurance Marketplaces," American Journal of Health Economics, University of Chicago Press, vol. 1(1), pages 53-81, Winter.
    37. A. Colin Cameron & Douglas L. Miller, 2015. "A Practitioner’s Guide to Cluster-Robust Inference," Journal of Human Resources, University of Wisconsin Press, vol. 50(2), pages 317-372.
    38. Marwa Farag & A. NandaKumar & Stanley Wallack & Dominic Hodgkin & Gary Gaumer & Can Erbil, 2012. "The income elasticity of health care spending in developing and developed countries," International Journal of Health Economics and Management, Springer, vol. 12(2), pages 145-162, June.
    39. Ellis, Randall P. & Martins, Bruno & Zhu, Wenjia, 2017. "Health care demand elasticities by type of service," Journal of Health Economics, Elsevier, vol. 55(C), pages 232-243.
    40. Deb, Partha & Trivedi, Pravin K, 1997. "Demand for Medical Care by the Elderly: A Finite Mixture Approach," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 12(3), pages 313-336, May-June.
    41. Buntin, Melinda Beeuwkes & Zaslavsky, Alan M., 2004. "Too much ado about two-part models and transformation?: Comparing methods of modeling Medicare expenditures," Journal of Health Economics, Elsevier, vol. 23(3), pages 525-542, May.
    42. Jonathan D. Ketcham & Claudio Lucarelli & Christopher A. Powers, 2015. "Paying Attention or Paying Too Much in Medicare Part D," American Economic Review, American Economic Association, vol. 105(1), pages 204-233, January.
    43. Aditi P. Sen & Thomas DeLeire, 2018. "How does expansion of public health insurance affect risk pools and premiums in the market for private health insurance? Evidence from Medicaid and the Affordable Care Act Marketplaces," Health Economics, John Wiley & Sons, Ltd., vol. 27(12), pages 1877-1903, December.
    44. Congressional Budget Office, 2017. "The Effects of Terminating Payments for Cost-Sharing Reductions," Reports 53009, Congressional Budget Office.
    45. Duarte, Fabian, 2012. "Price elasticity of expenditure across health care services," Journal of Health Economics, Elsevier, vol. 31(6), pages 824-841.
    46. Liran Einav & Amy Finkelstein & Maria Polyakova, 2018. "Private Provision of Social Insurance: Drug-Specific Price Elasticities and Cost Sharing in Medicare Part D," American Economic Journal: Economic Policy, American Economic Association, vol. 10(3), pages 122-153, August.
    47. Gilleskie, Donna, 2010. "Work absences and doctor visits during an illness episode: The differential role of preferences, production, and policies among men and women," Journal of Econometrics, Elsevier, vol. 156(1), pages 148-163, May.
    48. Eric French & Elaine Kelly & Eric French & Elaine Kelly, 2016. "Medical Spending around the Developed World," Fiscal Studies, Institute for Fiscal Studies, vol. 37, pages 327-344, September.
    49. Kyle Rozema & Nicolas R. Ziebarth, 2017. "Taxing Consumption and the Take-up of Public Assistance: The Case of Cigarette Taxes and Food Stamps," Journal of Law and Economics, University of Chicago Press, vol. 60(1), pages 1-27.
    50. DeLeire, Thomas & Chappel, Andre & Finegold, Kenneth & Gee, Emily, 2017. "Do individuals respond to cost-sharing subsidies in their selections of marketplace health insurance plans?," Journal of Health Economics, Elsevier, vol. 56(C), pages 71-86.
    51. Zweifel, Peter & Manning, Willard G., 2000. "Moral hazard and consumer incentives in health care," Handbook of Health Economics, in: A. J. Culyer & J. P. Newhouse (ed.), Handbook of Health Economics, edition 1, volume 1, chapter 8, pages 409-459, Elsevier.
    52. Gaynor Martin & Li Jian & Vogt William B, 2007. "Substitution, Spending Offsets, and Prescription Drug Benefit Design," Forum for Health Economics & Policy, De Gruyter, vol. 10(2), pages 1-33, July.
    53. Winfried Pohlmeier & Volker Ulrich, 1995. "An Econometric Model of the Two-Part Decisionmaking Process in the Demand for Health Care," Journal of Human Resources, University of Wisconsin Press, vol. 30(2), pages 339-361.
    54. Hanming Fang & Alessandro Gavazza, 2011. "Dynamic Inefficiencies in an Employment-Based Health Insurance System: Theory and Evidence," American Economic Review, American Economic Association, vol. 101(7), pages 3047-3077, December.
    55. Amy Finkelstein & Nathaniel Hendren & Mark Shepard, 2019. "Subsidizing Health Insurance for Low-Income Adults: Evidence from Massachusetts," American Economic Review, American Economic Association, vol. 109(4), pages 1530-1567, April.
    56. Saurabh Bhargava & George Loewenstein & Justin Sydnor, 2017. "Choose to Lose: Health Plan Choices from a Menu with Dominated Option," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 132(3), pages 1319-1372.
    57. Jesse M. Hinde, 2017. "Incentive(less)? The Effectiveness of Tax Credits and Cost-Sharing Subsidies in the Affordable Care Act," American Journal of Health Economics, MIT Press, vol. 3(3), pages 346-369, Summer.
    58. Benjamin R. Handel, 2013. "Adverse Selection and Inertia in Health Insurance Markets: When Nudging Hurts," American Economic Review, American Economic Association, vol. 103(7), pages 2643-2682, December.
    59. Keeler, Emmett B. & Rolph, John E., 1988. "The demand for episodes of treatment in the health insurance experiment," Journal of Health Economics, Elsevier, vol. 7(4), pages 337-367, December.
    60. Michael J. Dickstein & Mark Duggan & Joe Orsini & Pietro Tebaldi, 2015. "The Impact of Market Size and Composition on Health Insurance Premiums: Evidence from the First Year of the Affordable Care Act," American Economic Review, American Economic Association, vol. 105(5), pages 120-125, May.
    61. Borislava Mihaylova & Andrew Briggs & Anthony O'Hagan & Simon G. Thompson, 2011. "Review of statistical methods for analysing healthcare resources and costs," Health Economics, John Wiley & Sons, Ltd., vol. 20(8), pages 897-916, August.
    62. Jesse M. Hinde, 2017. "Incentive(less)? The Effectiveness of Tax Credits and Cost-Sharing Subsidies in the Affordable Care Act," American Journal of Health Economics, University of Chicago Press, vol. 3(3), pages 346-369, Summer.
    63. Manning, Willard G. & Mullahy, John, 2001. "Estimating log models: to transform or not to transform?," Journal of Health Economics, Elsevier, vol. 20(4), pages 461-494, July.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Soheil Ghili & Ben Handel & Igal Hendel & Michael D. Whinston, 2019. "Optimal Long-Term Health Insurance Contracts: Characterization, Computation, and Welfare Effects," Cowles Foundation Discussion Papers 2218R, Cowles Foundation for Research in Economics, Yale University, revised Jul 2020.
    2. Soheil Ghili & Ben Handel & Igal Hendel & Michael D. Whinston, 2019. "The Welfare Effects of Long-Term Health Insurance Contracts," Cowles Foundation Discussion Papers 2218, Cowles Foundation for Research in Economics, Yale University.
    3. Benjamin R. Handel & Jonathan T. Kolstad, 2021. "The Affordable Care Act After a Decade: Industrial Organization of the Insurance Exchanges," NBER Working Papers 29178, National Bureau of Economic Research, Inc.
    4. Soheil Ghili & Ben Handel & Igal Hendel & Michael D. Whinston, 2019. "Optimal Long-Term Health Insurance Contracts: Characterization, Computation, and Welfare Effects," Cowles Foundation Discussion Papers 2218R2, Cowles Foundation for Research in Economics, Yale University, revised May 2021.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Dunn, Abe, 2016. "Health insurance and the demand for medical care: Instrumental variable estimates using health insurer claims data," Journal of Health Economics, Elsevier, vol. 48(C), pages 74-88.
    2. Nicolas R. Ziebarth, 2018. "Social Insurance and Health," Contributions to Economic Analysis, in: Health Econometrics, volume 127, pages 57-84, Emerald Group Publishing Limited.
    3. Galina Besstremyannaya, 2014. "Heterogeneous effect of coinsurance rate on healthcare costs: generalized finite mixtures and matching estimators," Discussion Papers 14-014, Stanford Institute for Economic Policy Research.
    4. Kowalski, Amanda E., 2015. "Estimating the tradeoff between risk protection and moral hazard with a nonlinear budget set model of health insurance," International Journal of Industrial Organization, Elsevier, vol. 43(C), pages 122-135.
    5. Powell, David & Goldman, Dana, 2021. "Disentangling moral hazard and adverse selection in private health insurance," Journal of Econometrics, Elsevier, vol. 222(1), pages 141-160.
    6. Nicolas Ziebarth, 2014. "Assessing the effectiveness of health care cost containment measures: evidence from the market for rehabilitation care," International Journal of Health Economics and Management, Springer, vol. 14(1), pages 41-67, March.
    7. Tal Gross & Timothy J. Layton & Daniel Prinz, 2022. "The Liquidity Sensitivity of Healthcare Consumption: Evidence from Social Security Payments," American Economic Review: Insights, American Economic Association, vol. 4(2), pages 175-190, June.
    8. Zarek C. Brot-Goldberg & Amitabh Chandra & Benjamin R. Handel & Jonathan T. Kolstad, 2017. "What does a Deductible Do? The Impact of Cost-Sharing on Health Care Prices, Quantities, and Spending Dynamics," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 132(3), pages 1261-1318.
    9. Hayen, Arthur P. & Klein, Tobias J. & Salm, Martin, 2021. "Does the framing of patient cost-sharing incentives matter? the effects of deductibles vs. no-claim refunds," Journal of Health Economics, Elsevier, vol. 80(C).
    10. Martin Gaynor & Kate Ho & Robert J. Town, 2015. "The Industrial Organization of Health-Care Markets," Journal of Economic Literature, American Economic Association, vol. 53(2), pages 235-284, June.
    11. SeungHoon Han & Hosung Sohn, 2023. "The short-term effects of fixed copayment policy on elderly health spending and service utilization: evidence from South Korea’s age-based policy using exact date of birth," International Journal of Health Economics and Management, Springer, vol. 23(2), pages 255-279, June.
    12. Klein, Tobias J. & Salm, Martin & Upadhyay, Suraj, 2024. "Patient Cost-Sharing and Redistribution in Health Insurance," IZA Discussion Papers 16778, Institute of Labor Economics (IZA).
    13. Jones, A.M, 2010. "Models For Health Care," Health, Econometrics and Data Group (HEDG) Working Papers 10/01, HEDG, c/o Department of Economics, University of York.
    14. Benjamin R. Handel & Jonathan T. Kolstad, 2021. "The Affordable Care Act After a Decade: Industrial Organization of the Insurance Exchanges," NBER Working Papers 29178, National Bureau of Economic Research, Inc.
    15. Toshiaki Iizuka & Hitoshi Shigeoka, 2018. "Free for Children? Patient Cost-sharing and Healthcare Utilization," NBER Working Papers 25306, National Bureau of Economic Research, Inc.
    16. Ellis, Randall P. & Martins, Bruno & Zhu, Wenjia, 2017. "Health care demand elasticities by type of service," Journal of Health Economics, Elsevier, vol. 55(C), pages 232-243.
    17. Stefan Boes & Michael Gerfin, 2016. "Does Full Insurance Increase the Demand for Health Care?," Health Economics, John Wiley & Sons, Ltd., vol. 25(11), pages 1483-1496, November.
    18. M. Antonini & R. C. van Kleef & J. Henriquez & F. Paolucci, 2023. "Can risk rating increase the ability of voluntary deductibles to reduce moral hazard?," The Geneva Papers on Risk and Insurance - Issues and Practice, Palgrave Macmillan;The Geneva Association, vol. 48(1), pages 130-156, January.
    19. Giampiero Marra & Matteo Fasiolo & Rosalba Radice & Rainer Winkelmann, 2023. "A flexible copula regression model with Bernoulli and Tweedie margins for estimating the effect of spending on mental health," Health Economics, John Wiley & Sons, Ltd., vol. 32(6), pages 1305-1322, June.
    20. Keane, Michael & Stavrunova, Olena, 2016. "Adverse selection, moral hazard and the demand for Medigap insurance," Journal of Econometrics, Elsevier, vol. 190(1), pages 62-78.

    More about this item

    Keywords

    demand elasticities; health insurance; moral hazard; ACA; marketplaces; AV-variants; low-value care; lifestyle drugs; value-based CSRs; Utah;
    All these keywords.

    JEL classification:

    • H24 - Public Economics - - Taxation, Subsidies, and Revenue - - - Personal Income and Other Nonbusiness Taxes and Subsidies
    • H41 - Public Economics - - Publicly Provided Goods - - - Public Goods
    • H43 - Public Economics - - Publicly Provided Goods - - - Project Evaluation; Social Discount Rate
    • H51 - Public Economics - - National Government Expenditures and Related Policies - - - Government Expenditures and Health
    • I11 - Health, Education, and Welfare - - Health - - - Analysis of Health Care Markets
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health
    • J32 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Nonwage Labor Costs and Benefits; Retirement Plans; Private Pensions
    • J33 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Compensation Packages; Payment Methods
    • J68 - Labor and Demographic Economics - - Mobility, Unemployment, Vacancies, and Immigrant Workers - - - Public Policy

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:iza:izadps:dp12731. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Holger Hinte (email available below). General contact details of provider: https://edirc.repec.org/data/izaaade.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.