3 weeks ago - last edited 3 weeks ago
I have three variables, drug_ID, drug_name, and strength. Here is an example of the data format for these three variables:
drug_ID drug_name strength
1 A/B/C 5 mg-10 mg-5 mg
2 D 10 mg
3 E/F 7 mg-15mg
4 E/B 13 mg-8 mg
where A, B, ... are active ingredients of a drug. As you can see, for each observation, each active ingredient has a specific strength (in dosage). Also, note that A, B, ... are just examples. In the data, each ingredient may have different strings, e,.g., A = acetaminophen, B = codeine, etc.
Now, my question is that how can I return the strength for each active ingredient for each drug_ID? For example, for drug 1, I need to return 5, 10, and 5 mg for A, B, and C, respectively. Any help/idea is appreciated!
3 weeks ago
you could try something as below
data have; input drug_ID$ drug_name$ 16- 22 strength$ 34-49; cards; 1 A/B/C 5 mg-10 mg-5 mg 2 D 10 mg 3 E/F 7 mg-15mg 4 E/B 13 mg-8 mg ; data want; set have; do i=1 to countw(drug_name,'/'); drug=scan(drug_name,i,'/'); dose=scan(strength,i,'-'); output; end; drop i; run;