SAS code to keep significant digit

To keep a specific number of significant digits in SAS, you can use the ROUND function. Here's an example of how you can use it:

/* Example dataset */
data have;
  input value;
  datalines;
123.456
789.0123
45.67890
;

/* Keeping 3 significant digits */
data want;
  set have;
  rounded = round(value, 3);
run;

In this example, the ROUND function is used to round the value variable to 3 significant digits. The rounded values are then stored in a new variable called rounded. You can change the number 3 to your desired number of significant digits.

Note that the ROUND function rounds the value to the nearest whole number, so if you want to keep a specific number of decimal places instead of significant digits, you can use the ROUND function with a negative number of decimals. For example, ROUND(value, -2) will round to 2 decimal places