SAS Code: Rounding to Significant Digits

To keep a specific number of significant digits in SAS, you can utilize the ROUND function. Here's an example demonstrating its usage:

/* 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 rounds the 'value' variable to 3 significant digits. The rounded values are then stored in a new variable called 'rounded'. You can adjust the number 3 to achieve your desired number of significant digits.

It's important to note that the 'ROUND' function rounds the value to the nearest whole number. If you need to maintain a specific number of decimal places rather than significant digits, you can utilize the 'ROUND' function with a negative number of decimals. For instance, 'ROUND(value, -2)' will round to 2 decimal places.