Very often any question related to COUNT means that Proc FREQ is likely a good start. You can count individual levels of each variable or combinations of variables by using a * between names on a Tables statement. You may want the /list option for readability for multiple variables.
The Proc Freq statement option Order=freq means the output tables will be in decreasing order of frequency (i.e. decreasing count)
It's finally time to hack! Remember to visit the SAS Hacker's Hub regularly for news and updates.
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.
Ready to level-up your skills? Choose your own adventure.