IF/THEN/ELSE Errors

[danalukowski228]

For reference I am using sample code from the certification prep guide. I am using SAS Studio. The scenario is as follows, 

This scenario uses the Excel file heart.xlsx. Write a SAS program to do the following and store the results in the data set Work.Heart.

• Import the Excel file heart.xlsx.

• Drop the AgeAtDeath and DeathCause variables from the Work.Heart data set.

• Include only the observations where Status=Alive in the Work.Heart data set.

• If the AgeCHDdiag variable has a missing value (.), then do not include the value in Work.Heart.

• Create a new variable Smoking_Status, set its length to 17 characters, and use the following criteria:

     • If the value of Smoking is between 0 and less than 6, then Smoking_Status is "None (0–5)".

     • If the value of Smoking is between 6 and 15 inclusively, then Smoking_Status is "Moderate (6–15)".
     • If the value of Smoking is between 16 and 25 inclusively, then Smoking_Status is "Heavy (16–25)".

     • If the value of Smoking is greater than 25, then Smoking_Status is "Very Heavy (>25)".

     • If there are any other values for the variable Smoking, set Smoking_Status to "Error".

• Create a two-way frequency table using variables AgeCHDdiag and Smoking_Status and suppress column percentage, row percentage, and cell percentage.

Based on the scenario above, I have created the following code: 

libname practice xlsx '/home/u37611728/PracticeData/heart.xlsx';
 
data work.heart;
	set practice.heart;
	drop ageatdeath deathcause;
	where status='Alive';
	if AgeCHDdiag='.' then delete;
	length Smoking_Status $ 17;
	if <=0 smoking <6 then Smoking_Status='Non-Smoker(0-5)';
		else if 6<= smoking <=15 then Smoking_Status='Moderate (6-15)';
		else if 16<= smoking <=25 then Smoking_Status='Heavy (16-25)';
		else if smoking >25 then Smoking_Status='Very Heavy (>25)';
		else Smoking_Status='Error';
run;

proc freq data=work.heart;
	tables AgeCHDdiag*Smoking_Status / nocol norow nopercent;
run;

I checked the answer key in the book and it is the same answer. I am getting the following errors. Any help will be greatly appreciated. 🙂

 79         if <=0 smoking <6 then Smoking_Status='Non-Smoker(0-5)';
                __
                386
                200
                76
 80         else if 6<= smoking <=15 then Smoking_Status='Moderate (6-15)';
              ____
              160
 ERROR 386-185: Expecting an arithmetic expression.
 
 ERROR 200-322: The symbol is not recognized and will be ignored.
 
 ERROR 76-322: Syntax error, statement will be ignored.
 
 ERROR 160-185: No matching IF-THEN clause.

[Tom · Accepted solution]

Compare very carefully the text between the IF and THEN in lines 79 and 80.

Hint line 80 has it right.

[danalukowski228]

Thanks for the help. I knew it was something stupid simple that I was overlooking.