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Assignment Task

 

 

Task
QUANTITATIVE METHODS FOR QUALITY & SAFETY IN HEALTHCARE
Part AIn this part, there is a list that is given a table. These data are from January to September in 2015 year. The table has also concentrated on the telephonic response and the face-to-face response from the ambulance service. They have also shown the percentage of calls closed by telephonic advice. In this statistical analysis, the data are to be determined by the evidence provided in the table.Choice of Control chartThe data analyst needs to choose a control chart to study the changes in the overall process of the task done by the NHS foundation trust. This control chart is a graph that will help show the process changes over some time. In this graphical figure, the data will be plotted over some time (Prado et al., 2019). Control charts, commonly known as the Shewhart chart, are a type of flow chart. Using this sort of chart, the average value will be represented by a central line, an upper line will represent the upper control limit, and a lower line will represent the lower control limit for the process. Many industries use this tool to analyse the various data, and it is also considered one of the quality tools in seven basics.The X-MR chart is essential here because the data given to analyse are continuous, and it will be measured on an ongoing monthly basis (Stanistreet et al., 2018). Each month is a data point for the individual measurement for implementing the graph. X-MR chart is a personal chart, and it is also a moving range chart. This is a pair of control charts for processing with a subgroup size of one.Constructing the X-MR ChartThe X-MR chart can be described as a chart that helps in understanding if a given process is stable or not. The moving average of the chart provides details about the data points in the chart. The XMR chart aids in the calculation of the average by dividing the number of data points on the chart by the number of points on the chart itself. The data point in this situation will now be the number of months that have been provided.Further, in this case, we have to calculate the moving range of the values. The term moving content can be explained as the graph which describes the distance between two data points.In this case, we have to take the average moving range, which can be calculated by the sum of the given moving range divided by the number of the moving fields.

Figure 1: I-MR Chart
Specifying cause of the variation for identification criteriaThere are specific rules that are needed to be applied for the X-MR chart to interpret if there are any variations or possible variations. This is required order to be done to ensure that the visual patterns and the seasonal calculi patterns can be understood in a better manner. The variations are necessary to be understood to understand the trends and run off the single exceptional variations. The significant NHS improvements that are needed to be done ensure that the single unexpected occurrence. These trends are necessary to be followed to ensure good results at the time of the event. These trends can be given as:
There are specific improvements that are needed to be followed in this section. When there are calculations related to the median average and the moving average, there are certain variables that are required to be followed, and hence it helps in the process of ensuring that these values must be taken effectively.MethodologyHere in this study, the statistical tools are considered to create a chart that shows the data interpretation. The outcome which will come after analysing the data through the control chart process will be done through marinating some rules. This tool in statistical techniques has some advantages, which will be further used in support of intervention date annotations, summary statistics, built-in calculators, and it will also include the macros for doing the export to Microsoft PowerPoint. In this study, the methodology of the tool does not have the flexibility in their work as they have some restrictions and rules to be followed (McFadden et al., 2021). The statistical process control tool needs to behave seven consecutive data points that will move upward or downward to identify the trend correctly. In this study, there are six pints that have been used for detecting the earlier direction of the process. It will also use the seven points to identify the shift in the centreline from the overhead line or the bottom line in the chart.AssumptionThis part's measurements are consistent in terms of what's measured and how. The data values are conceptually comparable because they are obtained from the same identical causes. The data are arranged chronologically. The Shewhart graphic uses the data's mean as the average. It has also excluded process data noise or signals (Whitten et al., 2019).ObservationThere is no change in the variation process as it has been calculated in this part. There is no violation that happened all over the process of making the control charts, and there is one more point above the +3 sigma or below -3 sigma in the chart. There are eight consecutive points in the graph that are above and below the central line of the graph.

There are six such data points that are moving toward the upward and downward of the chart. It has been observed in this part of the work’s result is the calls are mainly closed by the telephonic advice only (Nardi et al., 2018).Part BIn this part, the list is given in the table with the data from the month of October 2015 to the month of March 2016. Here the data are being collected with other new protocol that has been introduced in part. Here the same task is given to do with the help of control chart process techniques—the percentage of calls that have been done to resolve the telephonic advice.Choice of control chartThese charts are used in pairs in the case of the variable data. These charts are used to control the ongoing process by finding the issues and correcting the problems if they have occurred. This control chart is aimed to prevent the pain that can occur and reduce it by making some fundamental changes in the process. There are different types of control charts that exist in the statistical analysis world to enhance the method of controlling problems accurately. This process of statistical control will use its techniques here to identify the variations involved in the data given in the form of a table (Gennings et al., 2020).There are some limitations of this chart that should be considered before using it as a statistical tool by the data analyst in the future. There are some prior works that are related to the data analysis is done to use this X-MR chart. There are other charts that are more accurate for the time between events data and also for the success between failures data. So, the statistical process of the control chart has shown that the X-MR chart will be more accurate for all types of data provided by the quality improvement system. The data signals in the chart will give a limit for both the upper and lower limits, and they are considered for understanding the context of the data signal and data noise (Haslam et al., 2020).Constructing the X-MR ChartGiven the additional data, there are further examinations there are some more things that are needed to be done. We have to further calculate the value of the upper control limit and the lower control limit in order to calculate the variations among the provided chart. The percentage of the resolved calls, there are specific needs that are needed to be made in order to ensure the new protocol of the intervention. Part A had an average of 11.46 percent and part B had an average of 11.31 percent. Thus, the DoD intervention reduced the triage process by 0.1587 percent. New values can be entered into the XMR chart as well. We can charge the importance of the New UCL and LCL and the UCL average. This can help in the process of ensuring better value.

Figure 2: I-MR Chart

MethodologyAs the task is the same, the methodology of this part will also be the same as part A. the result of comparing the results will have to include the outcome from the process control toll in the process.AssumptionThere is a lot of uniformity here and in terms of what and how the measurements are taken. Furthermore, the sources from which these values were generated are conceptually equivalent. As a result, the data is ordered chronologically. In the control charts, the mean of the data has been used as the average value in the chart. This part of the calculations has also excluded the data noise and data signal of the process (Brunsdon et al., 2018).ObservationIn this part of the study, there are no shifts happening in the chart of the process as well. There is no violation in the area of restrictions like one or more points above +3 or below –3 sigma. There are eight consecutive data points in the control chart above or below the central line of the diagram (Chowell et al., 2019).Part CIn this part also there is a new protocol that has been introduced from April 2016 to September 2016. The data that has been collected in this part is from this time period only. There has been data combination from the above factors has been done in this part to identify the changes occurring in the calls to resolve the percentage telephonic advice.Choice of control chartThis control chart process will help to identify such common causes and particular cause variations in the data. This process will also review the various types of charts available under the control chartprocess with the appropriate use of cases. These data are being analysed here so that if there is any problem has arisen, they can be appropriately identified. The X-MR chart is also used in the process (Siniscalco et al., 2020).The individual chart (X) will show the particular measurement of the data, and the moving range (MR) will display the variability between the data points. This is also working as the control charts only to monitor the effect of the process and prevent the problems that will arise during the improvement theory. Both charts will use to study the variability in the system (Wang et al., 2022).Constructing the X-MR ChartWith the different values, there are some of the other new deals that can ensure that there are variations, and hence it can be said that the new data set is a combination of part A, part B, Part c. Further, there can be an MXR chart through the additional data, and hence there can be further variations that can help in the process of ensuring that the perfect assumptions are made.

 

    

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  • Posted on : February 14th, 2020
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