Testing Proportionality in Duration Models with Respect to Continuous Covariates
Several omnibus tests of the proportional hazards assumption have been proposed in the literature. In the two-sample case, tests have also been developed against non-parametrically specified ordered alternatives. This paper considers a natural extension of such monotone ordering to the case of continuous covariates, and develops tests for the proportional hazards assumption against such ordered alternatives. Small sample properties of the tests are explored. The use of the test statistics, and use of histogram sieve estimators in the case where proportionality does not hold, are illustrated with application to data on strike durations.
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- Dale T. Mortensen, 1977. "Unemployment Insurance and Job Search Decisions," ILR Review, Cornell University, ILR School, vol. 30(4), pages 505-517, July.
- Kiefer, Nicholas M, 1988. "Economic Duration Data and Hazard Functions," Journal of Economic Literature, American Economic Association, vol. 26(2), pages 646-679, June.
- Joel L. Horowitz, 1999. "Semiparametric Estimation of a Proportional Hazard Model with Unobserved Heterogeneity," Econometrica, Econometric Society, vol. 67(5), pages 1001-1028, September.
- Narendranathan, W & Stewart, Mark B, 1993. "How Does the Benefit Effect Vary as Unemployment Spells Lengthen?," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 8(4), pages 361-381, Oct.-Dec..
- Card, David & Olson, Craig A, 1995.
"Bargaining Power, Strike Durations, and Wage Outcomes: An Analysis of Strikes in the 1880s,"
Journal of Labor Economics,
University of Chicago Press, vol. 13(1), pages 32-61, January.
- David Card & Craig A. Olson, 1992. "Bargaining Power, Strike Durations, and Wage Outcomes: An Analysis of Strikes in the 1880s," Working Papers 674, Princeton University, Department of Economics, Industrial Relations Section..
- David Card & Craig A. Olson, 1992. "Bargaining Power, Strike Duration, and Wage Outcomes: An Analysis of Strikes in the 1880s," NBER Working Papers 4075, National Bureau of Economic Research, Inc.
- Lawrence F. Katz, 1986. "Layoffs, Recall and the Duration of Unemployment," NBER Working Papers 1825, National Bureau of Economic Research, Inc.
- Murphy, S. A. & Sen, P. K., 1991. "Time-dependent coefficients in a Cox-type regression model," Stochastic Processes and their Applications, Elsevier, vol. 39(1), pages 153-180, October.
- Jayet, H. & Moreau, A., 1991. "Analysis of survival data : Estimation and specification tests using asymptotic least squares," Journal of Econometrics, Elsevier, vol. 48(1-2), pages 263-285.
- Han, Aaron & Hausman, Jerry A, 1990. "Flexible Parametric Estimation of Duration and Competing Risk Models," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 5(1), pages 1-28, January-M.
- Kennan, John, 1985. "The duration of contract strikes in U.S. manufacturing," Journal of Econometrics, Elsevier, vol. 28(1), pages 5-28, April.
- McCall, Brian P, 1994. "Testing the Proportional Hazards Assumption in the Presence of Unmeasured Heterogeneity," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 9(3), pages 321-334, July-Sept.
- Atkinson, A. B. & Gomulka, J. & Micklewright, J. & Rau, N., 1984. "Unemployment benefit, duration and incentives in Britain : How robust is the evidence?," Journal of Public Economics, Elsevier, vol. 23(1-2), pages 3-26.
- A. Bhattacharjee & C. Higson & S. Holly & P. Kattuman, 2009. "Macroeconomic Instability and Business Exit: Determinants of Failures and Acquisitions of UK Firms," Economica, London School of Economics and Political Science, vol. 76(301), pages 108-131, 02.
- P Ingram & David Metcalf & Jonathan Wadsworth, 1992. "Do Strikes Pay?," CEP Discussion Papers dp0092, Centre for Economic Performance, LSE. Full references (including those not matched with items on IDEAS)