The MDC Procedure Conditional Logit Estimates Algorithm converged. Model Fit Summary Dependent Variable y Number of Observations 4353 Number of Cases 478830 Log Likelihood -12358 Maximum Absolute Gradient 5.16624E-7 Number of Iterations 7 Optimization Method Newton-Raphson AIC 24728 Schwarz Criterion 24766 Goodness-of-Fit Measures Measure Value Formula Likelihood Ratio (R) 16206 2 * (LogL - LogL0) Upper Bound of R (U) 40922 - 2 * LogL0 Aldrich-Nelson 0.7883 R / (R+N) Cragg-Uhler 1 0.9758 1 - exp(-R/N) Cragg-Uhler 2 0.9759 (1-exp(-R/N)) / (1-exp(-U/N)) Estrella 0.9913 1 - (1-R/U)^(U/N) Adjusted Estrella 0.9912 1 - ((LogL-K)/LogL0)^(-2/N*LogL0) McFadden's LRI 0.396 R / U Veall-Zimmermann 0.8721 (R * (U+N)) / (U * (R+N)) N = # of observations, K = # of regressors The SAS System 10:23 Wednesday, June 3, 2009 364 The MDC Procedure Conditional Logit Estimates Parameter Estimates Standard Approx Parameter DF Estimate Error t Value Pr > |t| tc 1 -0.0364 0.000536 -67.82 <.0001 drum 1 3.2083 0.2303 13.93 <.0001 trout 1 1.4674 0.0883 16.61 <.0001 drum2 1 -1.5574 0.1668 -9.34 <.0001 trout2 1 -0.2716 0.0209 -13.00 <.0001 lognsite 1 0.5926 0.0285 20.79 <.0001 The SAS System 10:23 Wednesday, June 3, 2009 377 The MDC Procedure Nested Logit Estimates Algorithm converged. Model Fit Summary Dependent Variable y Number of Observations 4353 Number of Cases 478830 Log Likelihood -12351 Maximum Absolute Gradient 0.0000763 Number of Iterations 12 Optimization Method Newton-Raphson AIC 24716 Schwarz Criterion 24760 Goodness-of-Fit Measures Measure Value Formula Likelihood Ratio (R) 16221 2 * (LogL - LogL0) Upper Bound of R (U) 40922 - 2 * LogL0 Aldrich-Nelson 0.7884 R / (R+N) Cragg-Uhler 1 0.9759 1 - exp(-R/N) Cragg-Uhler 2 0.976 (1-exp(-R/N)) / (1-exp(-U/N)) Estrella 0.9913 1 - (1-R/U)^(U/N) Adjusted Estrella 0.9913 1 - ((LogL-K)/LogL0)^(-2/N*LogL0) McFadden's LRI 0.3964 R / U Veall-Zimmermann 0.8723 (R * (U+N)) / (U * (R+N)) N = # of observations, K = # of regressors The SAS System 10:23 Wednesday, June 3, 2009 382 The MDC Procedure Nested Logit Estimates Parameter Estimates Standard Approx Parameter DF Estimate Error t Value Pr > |t| tc_L1 1 -0.0366 0.000542 -67.46 <.0001 drum_L1 1 2.9722 0.2415 12.31 <.0001 trout_L1 1 1.6374 0.1077 15.20 <.0001 drum2_L1 1 -1.3797 0.1630 -8.47 <.0001 trout2_L1 1 -0.3111 0.0254 -12.27 <.0001 lognsite_L1 1 0.5956 0.0285 20.90 <.0001 INC_L2G1 1 0.5399 0.0942 5.73 <.0001