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  1. cte1

    Need Help with understanding how SAS conducts Chi-Squared Test

    I am in a real bind and need some help understanding how SAS conducts a chi-squared test to compare two coefficients in a logistic regression. Specifically, I am testing whether the coefficient on the variable RHS1 is statistically different from the coefficient on RHS2. I am using the TEST...
  2. cte1

    Count unique codes by group

    I am trying to count the number of unique codes in a group. Each group consist of multiple rows and the codes are pipe delimited in each cell. A sample of my dataset looks like this: GROUP CODES 1 |231|322|414| 1 |231|322| 2 |231| 2 |231|114| 2 3 3 So in GROUP 1 there are 3 unique codes (231...

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