Use the QC Cumulative window to manage the day-to-day (cumulative) QC information.
At the Menu Panel, select QC, then select QC Cumulative.
Perform any of the following tasks on this window:
Specify the time interval to review.
View the Levey-Jennings charts (x-r charts).
View the detailed control data information and omit invalid control results.
Use cumulative statistics to establish the Daily QC mean and 1 SD values.
Print the cumulative x-r charts.
Delete the cumulative QC data.
Close the window.
At the File(F) menu, select Specification at date(T).
In the Beginning day box, enter the date for the first day you want to review.
In the End day box, enter the date for the last day you want to review.
The QC Cumulative window can display data for up to 180 days.
Select OK.
The new date range displays in the title bar of the QC Cumulative window. Each time a new date range is entered, the display order must be re-established.
In the Control list, select the control you want to review. Each control product is identified by a letter (A to Z) that is assigned at the QC Sample Definition window.
Optional: Select the tests you want review and set the sequence in which the charts are presented.
At the View (V) menu, select X-Chart(X).
Optional: Set the presentation parameters for the daily mean and range charts.
The cumulative control charts for the selected control display.
There are two charts for each test. The daily means are plotted on the top chart, and the daily ranges are plotted on the bottom chart.
The heading identifies the test and provides the mean and SD for the daily means.
For the daily mean chart, the expected daily mean, the ±2 SD limits, and the ±3 SD limits are plotted on the vertical axis for reference. The ±2 SD and ±3 SD limits are calculated from the QC Cumulative SD entry at the Control Data Registration window. The expected daily mean value is obtained from the QC Cumulative Mean entry at the Control Data Registration window. For the daily ranges, the ±2 SD limits, and the ±3 SD limits are plotted on the vertical axis for reference.
If a daily mean or range value exceeds the ±3 SD limit, the chart color changes from blue to green.
Corrective action for unsatisfactory control results
Daily mean and range values omitted by the operator are colored red and are not included in the ±3 SD evaluation.
At the Setting(S) menu, select Chart setting(G).
In the Number of displays area:
In the Vertical list, select the number of rows (1-4) of charts you want displayed.
In the Horizontal list, select the number of charts (1-3) you want displayed in each row.
In the Drawing area, select how you want the chart presented.
Select OK.
Select Display order test.
Each test you want to review must be in the Select Test(S) list.
To add another test, select the test you want to review in the Meas. Test(I) list, then select >>.
To remove a test from the Select Test(S) list,select the test then select <<.
To set the display order for a test, in the Select Test(S) list, select the test you want to move, then select Up or Down as applicable.
Select OK.
At the View (V) menu, select Control Data (D).
In the Control list, select the control you want to review.
A letter (A to Z) defines each control product that is assigned at the QC Sample Definition window.
In the Test list in the lower panel, select the test you want to review.
Review the following QC cumulative information for the test.
· Cumulative QC statistics
· Levey-Jennings (x-r) charts: top chart is for daily means and bottom chart is for daily ranges
Optional: You can add data from other control products. In the Overlap (D) area, select the desired control(s).
· Individual daily control data
You cannot edit or erase a questionable daily data point, but you can omit it as follows:
In the Comment box for the daily data point you want to omit, enter the reason for omitting the result.
Select O located beside the Comment box.
· The daily data point information is now colored red and your user code displays in the User box.
· The daily mean and range points are colored red on the cumulative charts.
· The cumulative statistics are recalculated without the omitted control value.
Select Save.
At the View (V) menu, select QC-list (L).
In the Control list, select the control you want to review.
The QC list cumulative control statistics displays.
Optional: You can use the cumulative statistics to establish the QC Cumulative mean and 1 SD values for a control at the Control Data Registration window.
NOTE
For commercial control products, the average and SD values are typically obtained from the package insert for commercial control products. You can use this feature to generate average and SD values for pooled samples used for control purposes.
In the Control list, select the a control.
Select Save Control Data.
In the Test list at the Save Control Data dialog box, select the appropriate tests.
Select OK.
The selected cumulative control information is sent to the Control Data Registration window.
In the Control list, select a control.
Select Print.
In the Test list of the Print-Test Select dialog box, select the desired tests.
Select OK.
The cumulative mean and range charts for the selected tests are printed.
Optional: You can obtain a print preview of the cumulative charts as follows:
In the Control list, select a control.
In the System(S) menu, select Print Preview(V).
In the Test list of the Print-Test Select dialog box, select the appropriate tests.
Select OK.
The cumulative mean and range charts for the selected tests display.
NOTE
The system must be in READY or Wait before cumulative QC data can be deleted.
In the Control list, select the desired control.
Select Delete.
In the Delete Date(D): dialog box, select the dates to delete.
Select OK.
The cumulative QC data for the selected dates are deleted.