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.
A CSV file is a comma separated values file. When text and numbers are saved in a CSV file, it's easy to move them from one program to another. For example, you can export your contacts from Google in a CSV format, and then import them to Outlook. CSV files can be used with Excel or any other spreadsheet program. CSV files differ from other spreadsheet file types in that you can't save any formatting, and you can't save formulas. Download and open a sample .csv file for importing contacts to Outlook. Download this sample .csv file to your computer. When prompted, choose to Save the file to your computer as a CSV file.