In 2002, the National Kidney Foundation published treatment guidelines that identified five stages of Chronic Kidney Disease (CKD) based on declining GFR measurements. The guidelines recommend different actions based on the stage of kidney disease.
CSV (Comma Separated Value) was a file format devised to store tabular data. It uses commas to separate each entry in a row and the newline symbol to go to the next row. Excel is a more recent spreadsheet application from Microsoft and it saves the data with its own file format.
How to convert an existing Excel file into a .csv format: Open your excel file. Click on File and Save as. Select where you would like to save the file (like your desktop or a drive). In the File Name area, name your document. In the Save as Type area, select CSV(Comma Delimited) from the pull down menu.Click Save.You may receive one or two warning about the formatting of .csv, click yes.ow to convert an existing Excel file into a .csv format: Open your excel file. Click on File and Save as. Select where you would like to save the file (like your desktop or a drive). In the File Name area, name your document. In the Save as Type area, select CSV(Comma Delimited) from the pull down menu.