PROC REG for only selected months

[matt23]

Hi,

I want to use PROC REG but only for particular months. Here's what I have normally:

input load day month temperature
datalines:
12345 0 12 35
12456 1 11 33
12222 2 12 32
14532 3 6 31
15111 4 12 25
15222 5 1 24
15333 6 2 33
;

proc reg data=dataname;
model load=temperature;
run;

I have over 85,000 observations and I want to use prog reg only for data from months: 5, 6, and 7. What should I add to my code ?

[PaigeMiller · Accepted solution]

proc reg data=dataname(where=(month in (5,6,7)));