Detection of Healthcare Bubbles in Iran: a Left-Tailed Augmented Dickey-Fuller (LTADF) Approach
کلمات کلیدی:
, Healthcare, Pharmaceutical Market, Single and Multiple Bubbles, Mild Explosive Behaviorچکیده
Healthcare bubbles can cause instability in healthcare system. This study investigates the possibility of single and multiple healthcare bubbles in Iran healthcare market. We applied ADF, SADF and GSADF methods of Left-Tailed Augmented Dickey-Fuller to locate single and multiple healthcare bubble episodes. In particular, this study focuses on the explosive behavior of the pharmaceutical products indicator in the Tehran Stock Exchange (TSE) from November 2008 to August 2017. Our results show that the Iran healthcare market has experienced 8 bubbles over the period of 2008-2017, some of which are single, and others are multiple. The first bubble has occurred in June 2010. Other healthcare bubbles have appeared from 2011 until August 2014. However, the seventh bubble appears two years later in August 2016. The peak in healthcare bubbles can be seen in March to April in 2013. Healthcare policymakers should monitor the market to recognize the bubbles so that they can mitigate the consequences of the bubble in the market and orient the prices of medical and pharmaceutical commodities
مراجع
ettendorf, T., and Chen, W. (2013). “Are there bubbles in the Sterling-dollar exchange rate? New evidence from sequential ADF tests”. Economics Letters, 120(2), pp.350-353.
Bohl, M. T., Kaufmann, P., and Stephan, P. M. (2013). “From hero to zero: Evidence of performance reversal and speculative bubbles in German renewable energy stocks”. Energy Economics, Vol 37, pp. 40-51.
Chen, W. Y., Liang, Y. W., and Lin, Y. H. (2016). “Is the United States in the middle of a healthcare bubble?”. The European Journal of Health Economics, 17(1),pp.99-111.
Colombo, G. L., and Montecucco, C. M. (2013). “Generic vs brand originator alendronate: analysis of persistence and compliance in five Local Healthcare Units in the Lombardy Region of Italy”. Clinical Cases in Mineral and Bone Metabolism, 10(3), p.195.
De Long, J. B., Shleifer, A., summers, L. H., and Waldmann, R. J. (1990). “Positive feedback investment strategies and destabilizing rational speculation”. The Journal of Finance, 45(2), pp.379-395.
Dentzer, S., Knudsen, R. W. S., Weissberg, J., and Gazelle, G. S. (2008). “1464 Medical Technology & Spending: The Next Market Bubble?”. Health Affairs.
Diba, B. T., and Grossman, H. I. (1988). “Explosive rational bubbles in stock prices?”. The American Economic Review, 78(3), pp.520-530.
Diba, B. T., and Grossman, H. I. (1988). “The theory of rational bubbles in stock prices”. The Economic Journal, 98(392), pp.746-754.
Etienne, X. L., Irwin, S. H., and Garcia, P. (2014).” Bubbles in food commodity markets: Four decades of evidence”. Journal of International Money and Finance, 42, pp.129-155.
Evans, G. W. (1991). “Pitfalls in testing for explosive bubbles in asset prices”. The American Economic Review, 81(4), pp.922-930.
Foy, A. (2012). “Understanding the healthcare bubble: how it was inflated, and why it must burst”. Journal of American Physicians and Surgeons, 17(2), pp. 45-49.
Frogner, B., Waters, H., and Anderson, G. (2011). “Comparative health systems. Health care delivery in the United States. New York”, Springer Publishing Company, pp.67-79.
Gormus, S., Guloglu, B., and Gunes, S. (2011). “Determinant of Stock Market Return Correlation: An Extended Gravity Model Approach”. International Journal of Contemporary Economics and Administrative Sciences, 1(4).pp.298-312.
Green, C. R. (2008). “The healthcare bubble through the lens of pain research, practice, and policy: Advice for the new President and Congress”. The Journal of Pain, 9(12), pp.1071-1073.
Hatefi Madjumerd, M., Zamanian, G.,and Shahiki Tash, M. (2017). “Valuation of Multiple Bubbles in the Stock Market of Tehran”. Quarterly Journal of Quantitative Economics.14 (2), pp. 85-110.
Kaufman, N. S. (2011). “Three brutal facts that provide strategic direction for healthcare delivery systems: preparing for the end of the healthcare bubble”. Journal of Healthcare Management, 56(3), pp.163-168.
Kindleberger, C. P. (1991). “The economic crisis of 1619 to 1623”. The Journal of Economic History, 51(1), pp.149-175.
Mladovsky, P., Srivastava, D., Cylus, J., Karanikolos, M., Evetovits, T., Thomson, S., & McKee, M. (2012). “Health policy responses to the financial crisis in Europe”.
Pavlidis, E., Paya, I., and Peel, D. (2012). “A new test for rational speculative bubbles using forward exchange rates: The case of the interwar German hyperinflation” (No. 18599597).
Phillips PCB, Magdalinos T (2007). “Limit Theory for Moderate Deviations from a Unit Root”. Journal of Econometrics, 136(1), pp.115 -130.
Phillips PCB, Shi, S., Yu, J. (2013). “Testing for Multiple Bubbles 1: Historical Episodes of Exuberance and Collapse in the S&P 500”.
Phillips PCB, Wu Y, Yu J. (2011). “Explosive Behavior in the 1990s NASDAQ: When Did Exuberance Escalate Asset Values?”. International Economic Review, 52(1), pp. 201 -226.
Phillips PCB, Yu J. (2011). “Dating the Timeline of Financial Bubbles during the Subprime Crisis”. Quantitative Economics, 2(3), pp.455 -491.
Phillips, P. C., Shi, S., & Yu, J. (2014). “Supplement to two papers on multiple bubbles. Manuscript, 2015b”, available from https://sites. Google. Com/site/shupingshi/TN_GSADF. Pdf.
Phillips, P., Shi, S., & Yu, J. (2012). “Testing for multiple bubbles”.
Reinhart, C. M., & Rogoff, K. S. (2009). “This time is different: Eight centuries of financial folly”.
Study of pharmaceutical industry in Iran. (2015). “Middle East Bank Economic Research Group”.
Tirole, J. (1982). “On the possibility of speculation under rational expectations.” Econometrical: Journal of the Econometric Society, 1163-1181.
Tirole, J. (1985). “Asset bubbles and overlapping generations,”conometrical Journal of the Econometric Society, 1499-1528.
Tsenkov, V., Stoykova, A. (2017). “The Impact of the Global Financial Crisis on the market efficiency of capital markets of south east Europe”, International Journal of Contemporary Economics and Administrative Sciences,7(1-2),pp.31-57.
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