[R] Double AND within an IF statement

Polychronis KOSTOULAS pkost at uth.gr
Wed Feb 24 13:08:43 CET 2016

Hi there,

apologies if this is easy. I want to write this condition:

If age is more than 4 years and less or equal to 8 years and infection  
is positive then replacement is 2.

Can you help me the double END?


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