Hi, In my dataset the variables which are indicated by diffrent range say Female_Age_Band are given as 15-20,20-25,25-30,...& so on.But the problem is wherever the data is unavailable that particular observation is labelled as "Unavailable" which is making sas to read this field as a character. So I believe this will make it difficult to invoke this variable in logistic regression.Further , there are also certain categorical fields which has say 3 distinct indicators 0 1 & 2 .But even these fields have the "Unavailable" label.Cannot technically replace with zeroes because zero might be a valid value. Can someone help with a solution ?
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