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Prevalent cohort studies and unobserved heterogeneity
Lifetime Data Analysis, 2019Consider lifetimes originating at a series of calendar times [Formula: see text]. At a certain time [Formula: see text] a cross-sectional sample is taken, generating a sample of current durations (backward recurrence times) of survivors until [Formula: see text] and a prevalent cohort study consisting of survival times left-truncated at the current ...
Niels Keiding +3 more
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Identifying consumer heterogeneity in unobserved categories
Marketing Letters, 2011Categorization has been extensively studied in both the psychology and marketing literatures. However, very little methodological research has demonstrated the heterogeneity in consumers' unobserved category structures and activations. We propose a new latent structure procedure that simultaneously identifies the unobserved categories that consumers ...
Atalay, Selin +3 more
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Endogeneity bias in the absence of unobserved heterogeneity
Annals of Epidemiology, 2004To demonstrate that endogeneity bias can still arise even when no unobserved heterogeneity exists.A formal mathematical proof and a Monte Carlo simulation are used to demonstrate that ordinary estimation techniques will generate biased parameter estimates.The Monte Carlo results support the formal proof. Even in the absence of unobserved heterogeneity,
Gregory D, Berg, Edward C, Mansley
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2003
AbstractUnobserved heterogeneity is one instance in where correlation between observables and unobservables may be expected. This has been a pervasive problem in cross-sectional analysis. A major motivation for using panel data has been the ability to control from the possibly correlated, time-invariant heterogeneity without observing it.
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AbstractUnobserved heterogeneity is one instance in where correlation between observables and unobservables may be expected. This has been a pervasive problem in cross-sectional analysis. A major motivation for using panel data has been the ability to control from the possibly correlated, time-invariant heterogeneity without observing it.
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Unobserved Heterogeneity in Store Choice Models
2002Discrete choice models are a tool which is shared by a large variety of scientific areas, and for this reason, different specifications have been developed. Of all these specifications, the so-called multinomial logit model (McFadden, 1974) is the one that has been used most to analyze situations in which there are multiple choice alternatives ...
Ignacio Rodríguez-del-Bosque +3 more
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Observed and unobserved heterogeneity in the duration dependency parameter
Economics Letters, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The Welfare Implications of Unobserved Heterogeneity
Review of Income and Wealth, 2017New conditions are derived for relating household financial well‐being to household utility. In particular, a one‐for‐one mapping between the equivalent incomes stemming from subsistence‐based utility functions and probabilistic models of financial well‐being is established.
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Forecasting with Unobserved Heterogeneity [PDF]
, 2012 Forecasting based on random intercepts models requires imputation of the individual permanent effects to the simulated individuals. When these individuals enter the simulation with a history of past outcomes this involves sampling from conditional distributions, which might be unfeasible. I present a method for drawing individual permanent effects from
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Instrumental Variables with Unobserved Heterogeneity in Treatment Effects
SSRN Electronic JournalThis chapter synthesizes and critically reviews the modern instrumental variables (IV) literature that allows for unobserved heterogeneity in treatment effects (UHTE). We start by discussing why UHTE is often an essential aspect of IV applications in economics and we explain the conceptual challenges raised by allowing for it. Then we review and survey
Mogstad, Magne, Torgovitsky, Alexander
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Simple Estimation of a Duration Model with Unobserved Heterogeneity
Econometrica, 1990This paper presents a simple estimator of the shape parameter in a Weibull duration model with unobserved heterogeneity. The estimator is consistent and asymptotically normal under mild conditions, and a consistent estimator of the asymptotic variance is available. A Monte Carlo study indicates that the asymptotic distribution of the estimator provides
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