01472367

Component

https://doi.org/10.3141/2354-01

http://scholar.google.com...fton&publication_year=2013

Pseudopanel data have been increasingly applied in travel demand analysis to investigate the long-run travel demand when genuine panel data are unavailable. However, conventional estimation techniques have typically been used without a careful consideration of some unique properties of pseudopanel data. This paper shows that ignoring these properties potentially leads to estimation bias or inefficiency not observed in genuine panel data. The method used is a Monte Carlo experiment with scenarios designed to generate various data possessing pseudopanel data characteristics under conditions of limited observations; the performance of various estimator is evaluated with the use of the simulation results. This research found that the large between-group variation of the exogenous variable and the variance of unobserved group effects in pseudopanel data are the primary causes of estimation bias and inefficiency. Other factors such as cohort sizes and nonspherical errors have a smaller effect on the estimators’ performance. An empirical application using Sydney Household Travel Survey data is also presented to illustrate the simulation findings.

01496622

13-0538

English

pp 1–8

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286701

Print

References (23) ; Tables (7)

Bias (Statistics); Data analysis; Estimating; Monte Carlo method; Simulation; Travel demand; Travel surveys

Administration and Management; Data and Information Technology; Highways; I70: Traffic and Transport

PRP, TRIS, TRB, ATRI

Feb 5 2013 12:14PM

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