- · Under what circumstances would you code a SELECT construct instead of IF statements?
- · What is _n_?
- ·What statement you code to tell SAS that it is to write to an external file? What statement do you code to write the record to the file?
- 1) Which date functions advances a date time or date/time value by a given interval?
- 1. Have you used macros? For what purpose you have used?
- 10. What do you code to create a macro? End one?
- 11. What is the difference between %PUT and SYMBOLGEN?
- 12) What are the advantages of using SAS in clinical data management? Why should not we use other software products in managing clinical data?
- 14. If you need the value of a variable rather than the variable itself what would you use to load the value to a macro variable?
- 15) Name several ways to achieve efficiency in your program. Explain trade-offs.
