By default, PROC SURVEYREG displays the following information in the “Data Summary” table:
Number of Observations, which is the total number of observations used in the analysis, excluding observations with missing values
Sum of Weights, if you specify a WEIGHT statement
Mean of the dependent variable in the MODEL statement, or Weighted Mean if you specify a WEIGHT statement
Sum of the dependent variable in the MODEL statement, or Weighted Sum if you specify a WEIGHT statement