例16-01计算结果.lst

SAS应用_医学统计学的例题程序及其结果,学习SAS的必备资料.

                                       The SAS System        21:18 Tuesday, April 2, 2002  10

                                   The LOGISTIC Procedure

           Data Set: WORK.EX16_1
           Response Variable: Y
           Response Levels: 2
           Number of Observations: 8
           Frequency Variable: F
           Link Function: Logit


                                       Response Profile

                                  Ordered
                                    Value       Y     Count

                                        1       0       435
                                        2       1       451



             Model Fitting Information and Testing Global Null Hypothesis BETA=0

                                      Intercept
                        Intercept        and
          Criterion       Only       Covariates    Chi-Square for Covariates

          AIC            1229.968      1165.422         .
          SC             1234.755      1179.782         .
          -2 LOG L       1227.968      1159.422       68.546 with 2 DF (p=0.0001)
          Score              .             .          67.071 with 2 DF (p=0.0001)


                          Analysis of Maximum Likelihood Estimates

                  Parameter   Standard      Wald         Pr >      Standardized       Odds
  Variable   DF    Estimate     Error    Chi-Square   Chi-Square     Estimate        Ratio

  INTERCPT   1      -0.9099     0.1358      44.8699       0.0001              .       .
  X1         1       0.8856     0.1500      34.8625       0.0001       0.240830      2.424
  X2         1       0.5261     0.1572      11.2069       0.0008       0.137347      1.692


                Association of Predicted Probabilities and Observed Responses

                          Concordant = 50.3%          Somers' D = 0.302
                          Discordant = 20.2%          Gamma     = 0.428
                          Tied       = 29.5%          Tau-a     = 0.151
                          (196185 pairs)              c         = 0.651