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.
CSV files can help you repurpose your spreadsheet data for other business purposes. Set the Save as Type drop-down menu to CSV and name your file. Use the file-navigation interface in the Save As dialog box to locate the drive and folder to which you want to save your CSV file. Click on the Save button to begin the export process.