SAS for Mixed Models, Second Edition, 2nd Edition

Nonlinear Mixed Models

15

15.1 Introduction

15.2 Background on PROC NLMIXED

15.3 Example: Logistic Growth Curve Model

15.3.1 PROC NLMIXED Analysis

15.3.2 %NLINMIX Macro Analysis—Method 1

15.3.3 %NLINMIX Macro Analysis—Method 2

15.3.4 %NLINMIX Macro Analysis—Method 3, With and Without Variance Weighting

15.3.5 Choosing the Exponent for the Weight Matrix That Leads to the Best Fit

15.3.6 Comparing the Logistic Model Fitting Methods

15.4 Example: Nested Nonlinear Random Effects Models

15.5 Example: Zero-Inflated Poisson and Hurdle Poisson Models

15.6 Example: Joint Survival and Longitudinal Model

15.7 Example: One-Compartment Pharmacokinetic Model

15.8 Comparison of PROC NLMIXED and the %NLINMIX Macro

15.9 Three General Fitting Methods Available ...