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giggles_fairy
2009 Apr 24
3
Help with for/if loop
I have a set of data that includes various data columns. One if the survival
time and another if a continuous variable of ages. I want to put the ages
into intervals so that I can then perform the Kalpan Meier test. I am trying
to use the following code to build a column with the age group numbers in
agecatagory<-c( )
for (i in 1:137)
{
{
if(age[i]<=46) {agecat[i]<-1}
if(age[i]>46