The cost efficiency of Vietnamese banks – the difference between DEA and SFA

Purpose – The paper aims to enrich previous findings for an emerging banking industry such as Vietnam, reporting the difference between the parametric and nonparametric methods when measuring cost efficiency. The purpose of the study is to assess the consistency in issuing policies to improve the co...

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Main Authors: Phong Hoang Nguyen, Duyen Thi Bich Pham
Format: Article
Language:English
Published: Emerald Publishing 2020-05-01
Series:Journal of Economics and Development
Subjects:
Online Access:https://www.emerald.com/insight/content/doi/10.1108/JED-12-2019-0075/full/pdf?title=the-cost-efficiency-of-vietnamese-banks-the-difference-between-dea-and-sfa
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author Phong Hoang Nguyen
Duyen Thi Bich Pham
author_facet Phong Hoang Nguyen
Duyen Thi Bich Pham
author_sort Phong Hoang Nguyen
collection DOAJ
description Purpose – The paper aims to enrich previous findings for an emerging banking industry such as Vietnam, reporting the difference between the parametric and nonparametric methods when measuring cost efficiency. The purpose of the study is to assess the consistency in issuing policies to improve the cost efficiency of Vietnamese commercial banks. Design/methodology/approach – The cost efficiency of banks is assessed through the data envelopment analysis (DEA) and the stochastic frontier analysis (SFA). Next, five tests are conducted in succession to analyze the differences in cost efficiency measured by these two methods, including the distribution, the rankings, the identification of the best and worst banks, the time consistency and the determinants of efficiency frontier. The data are collected from the annual financial statements of Vietnamese banks during 2005–2017. Findings – The results show that the cost efficiency obtained under the SFA models is more consistent than under the DEA models. However, the DEA-based efficiency scores are more similar in ranking order and stability over time. The inconsistency in efficiency characteristics under two different methods reminds policy makers and bank administrators to compare and select the appropriate efficiency frontier measure for each stage and specific economic conditions. Originality/value – This paper shows the need to control for heterogeneity over banking groups and time as well as for random noise and outliers when measuring the cost efficiency.
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spelling doaj.art-01822dc9a22a4e34a3d03999866a0f622022-12-22T04:03:11ZengEmerald PublishingJournal of Economics and Development1859-00202632-53302020-05-0122220922710.1108/JED-12-2019-0075644624The cost efficiency of Vietnamese banks – the difference between DEA and SFAPhong Hoang Nguyen0Duyen Thi Bich Pham1Quy Nhon University, Quy Nhon, VietnamQuy Nhon University, Quy Nhon, VietnamPurpose – The paper aims to enrich previous findings for an emerging banking industry such as Vietnam, reporting the difference between the parametric and nonparametric methods when measuring cost efficiency. The purpose of the study is to assess the consistency in issuing policies to improve the cost efficiency of Vietnamese commercial banks. Design/methodology/approach – The cost efficiency of banks is assessed through the data envelopment analysis (DEA) and the stochastic frontier analysis (SFA). Next, five tests are conducted in succession to analyze the differences in cost efficiency measured by these two methods, including the distribution, the rankings, the identification of the best and worst banks, the time consistency and the determinants of efficiency frontier. The data are collected from the annual financial statements of Vietnamese banks during 2005–2017. Findings – The results show that the cost efficiency obtained under the SFA models is more consistent than under the DEA models. However, the DEA-based efficiency scores are more similar in ranking order and stability over time. The inconsistency in efficiency characteristics under two different methods reminds policy makers and bank administrators to compare and select the appropriate efficiency frontier measure for each stage and specific economic conditions. Originality/value – This paper shows the need to control for heterogeneity over banking groups and time as well as for random noise and outliers when measuring the cost efficiency.https://www.emerald.com/insight/content/doi/10.1108/JED-12-2019-0075/full/pdf?title=the-cost-efficiency-of-vietnamese-banks-the-difference-between-dea-and-sfacost efficiencydata envelopment analysisstochastic frontier analysisemerging banking
spellingShingle Phong Hoang Nguyen
Duyen Thi Bich Pham
The cost efficiency of Vietnamese banks – the difference between DEA and SFA
Journal of Economics and Development
cost efficiency
data envelopment analysis
stochastic frontier analysis
emerging banking
title The cost efficiency of Vietnamese banks – the difference between DEA and SFA
title_full The cost efficiency of Vietnamese banks – the difference between DEA and SFA
title_fullStr The cost efficiency of Vietnamese banks – the difference between DEA and SFA
title_full_unstemmed The cost efficiency of Vietnamese banks – the difference between DEA and SFA
title_short The cost efficiency of Vietnamese banks – the difference between DEA and SFA
title_sort cost efficiency of vietnamese banks the difference between dea and sfa
topic cost efficiency
data envelopment analysis
stochastic frontier analysis
emerging banking
url https://www.emerald.com/insight/content/doi/10.1108/JED-12-2019-0075/full/pdf?title=the-cost-efficiency-of-vietnamese-banks-the-difference-between-dea-and-sfa
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