Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla

In Colombia, a socioeconomic stratification (SES) system of households based on the physical characteristics of the dwelling and its surroundings is implemented in order to set subsidies to public services. Many studies use this classification as a proxy variable for the household income, mainly bec...

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Main Authors: Victor Cantillo-García, Luis A. Guzman, Julian Arellana
Format: Article
Language:English
Published: Universidad Nacional de Colombia 2019-10-01
Series:Dyna
Subjects:
Online Access:https://revistas.unal.edu.co/index.php/dyna/article/view/81821
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author Victor Cantillo-García
Luis A. Guzman
Julian Arellana
author_facet Victor Cantillo-García
Luis A. Guzman
Julian Arellana
author_sort Victor Cantillo-García
collection DOAJ
description In Colombia, a socioeconomic stratification (SES) system of households based on the physical characteristics of the dwelling and its surroundings is implemented in order to set subsidies to public services. Many studies use this classification as a proxy variable for the household income, mainly because of the ease to retrieve data. This investigation proposes an evaluation of the SES as an explanatory variable for the household income. Ordered logit regressions were estimated for the cities of Bogotá, Medellín, Cali and Barranquilla, where the dependent variable corresponds to the SES. Even though there is a positive correlation between SES and household income, the relation depends on certain characteristics of the household as it size, vehicle availability and percentage of workers and students. The results were validated by comparing trip generation models. By including the significant attributes from the ordinal regressions, trip generation models with income and SES had similar fit, which suggests that using the SES as a proxy variable for the income, might be appropriate as long as their correspondence is checked according to household characteristics.
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spelling doaj.art-4e8c2c6065684b4bb60ab223e4e1d9752022-12-21T20:00:27ZengUniversidad Nacional de ColombiaDyna0012-73532346-21832019-10-018621125826710.15446/dyna.v86n211.8182152398Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and BarranquillaVictor Cantillo-García0Luis A. Guzman1Julian Arellana2Universidad de los AndesUniversidad de los AndesUniversidad del NorteIn Colombia, a socioeconomic stratification (SES) system of households based on the physical characteristics of the dwelling and its surroundings is implemented in order to set subsidies to public services. Many studies use this classification as a proxy variable for the household income, mainly because of the ease to retrieve data. This investigation proposes an evaluation of the SES as an explanatory variable for the household income. Ordered logit regressions were estimated for the cities of Bogotá, Medellín, Cali and Barranquilla, where the dependent variable corresponds to the SES. Even though there is a positive correlation between SES and household income, the relation depends on certain characteristics of the household as it size, vehicle availability and percentage of workers and students. The results were validated by comparing trip generation models. By including the significant attributes from the ordinal regressions, trip generation models with income and SES had similar fit, which suggests that using the SES as a proxy variable for the income, might be appropriate as long as their correspondence is checked according to household characteristics.https://revistas.unal.edu.co/index.php/dyna/article/view/81821socioeconomic stratahousehold incomecolombiatransport modelsordered logit
spellingShingle Victor Cantillo-García
Luis A. Guzman
Julian Arellana
Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla
Dyna
socioeconomic strata
household income
colombia
transport models
ordered logit
title Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla
title_full Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla
title_fullStr Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla
title_full_unstemmed Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla
title_short Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla
title_sort socioeconomic strata as proxy variable for household income in transportation research evaluation for bogota medellin cali and barranquilla
topic socioeconomic strata
household income
colombia
transport models
ordered logit
url https://revistas.unal.edu.co/index.php/dyna/article/view/81821
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