Quantitative analysis of Six Sigma, Lean and Lean Six Sigma research publications in last two decades

Shokri, Alireza (2017) Quantitative analysis of Six Sigma, Lean and Lean Six Sigma research publications in last two decades. International Journal of Quality & Reliability Management, 34 (5). pp. 598-625. ISSN 0265-671X

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Abstract

Purpose – This research study intends to extend previous studies to a hybrid analysis of three business improvement practices of Lean, Six Sigma and Lean Six Sigma (LSS) within last two decades and identify the research gaps and focuses in more comprehensive and robust classification framework.

Design/methodology/approach - A secondary data collection and literature review was conducted to collect information about peer reviewed journal articles under six dimensions of a tested classification framework. The frequency and distribution analysis was conducted followed by the Pearson’s Chi Squared test to analyse any relationship between dimensions of framework in order to identify the gap.

Finding –Despite a relatively great deal of regular research outputs about Six Sigma, Lean and LSS, academic journal articles have been found mainly limited to a few industries, themes and countries. “General manufacturing”, “healthcare”, “automotive” and “electronic industries” as sectors; and “tools and techniques”, “benefits” and “success factors” as key themes have been mostly approached by LSS, Six Sigma and Lean management articles. It was also found that there is still a great disparity amongst researchers and journals to publish about these three business improvement practices.

Research Implications – The research publications for LSS, Six Sigma and Lean management should have wider approach towards various manufacturing and service sectors, countries and journal publications. A greater level of research/enterprise activities has been found in relation to LSS and Six Sigma articles compared to Lean management articles.

Originality/Value- This research aims to identify the gaps in research publications during last two decades about three major business improvement practices in one package and through more comprehensive robust classification framework and also through comparative analysis.

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