![]() ![]() The term Six Sigma originates from statistical quality control, a reference to the fraction of a normal curve that lies within six standard deviations of the mean, used to represent a defect rate. This article comprehensively assesses Six Sigma healthcare applications and impact. The table below shows the percentage of data that falls within the standard deviations and the amount of defects per sigma. Each Six Sigma project follows a defined methodology and has specific value targets, such as reducing pollution or increasing customer satisfaction. Healthcare staff can use the results to target promising areas. Future research can include directly surveying healthcare organizations to provide additional data for assessment.įuture application should emphasize obtaining improvements that lead to significant and sustainable value. Results are based on reported applications. These results do not favorably assess Six Sigma's overall effectiveness and the value it offers healthcare. ![]() Then work out the mean of those squared differences. Then for each number: subtract the Mean and square the result. Work out the Mean (the simple average of the numbers) 2. To calculate the standard deviation of those numbers: 1. Only 28 percent reported cost savings and 8 percent offered revenue enhancement. Say we have a bunch of numbers like 9, 2, 5, 4, 12, 7, 8, 11. This increase in performance and decrease in process variation helps lead to defect reduction and improvement in profits, employee morale, and quality of products or services. While 67 percent had initial improvement in the key process metric, only 10 percent reported sustained improvement. Six Sigma is a method that provides organizations tools to improve the capability of their business processes. When you read this below table, 4 sigmas means 4 sigma on each side Meaning the width is actually 8 sigmas. Better CPK 1.67 (5), this means 233 DPPM. About 42.1 percent of the applications have error rate as their driving metric, with the remainder focusing on process time (38 percent) and productivity (18.9 percent). Good CPK 1.33 (4), this means 6210 DPPM, we use this, but you dont want to be here. Several inpatient care areas have seen most applications, including admission, discharge, medication administration, operating room (OR), cardiac and intensive care. Healthcare Six Sigma applications were categorized by functional area and department, key process metric, cost savings and revenue generation (if any) and other key implementation characteristics. ![]() The purpose of this paper is to conduct a comprehensive review and assessment of the extant Six Sigma healthcare literature, focusing on: application, process changes initiated and outcomes, including improvements in process metrics, cost and revenue.ĭata were obtained from an extensive literature search. ![]()
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