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Longitudinal Data Analysis - Autoregressive Linear Mixed Effects Models

Longitudinal Data Analysis - Autoregressive Linear Mixed Effects Models

Ikuko Funatogawa, Takashi Funatogawa

 

Verlag Springer-Verlag, 2019

ISBN 9789811000775 , 150 Seiten

Format PDF, OL

Kopierschutz Wasserzeichen

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64,19 EUR

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Longitudinal Data Analysis - Autoregressive Linear Mixed Effects Models


 

Preface

6

Contents

8

1 Longitudinal Data and Linear Mixed Effects Models

12

1.1 Longitudinal Data

12

1.2 Linear Mixed Effects Models

14

1.3 Examples of Linear Mixed Effects Models

15

1.3.1 Means at Each Time Point with Random Intercept

16

1.3.2 Group Comparison Based on Means at Each Time Point with Random Intercept

18

1.3.3 Means at Each Time Point with Unstructured Variance Covariance

20

1.3.4 Linear Time Trend Models with Random Intercept and Random Slope

21

1.3.5 Group Comparison Based on Linear Time Trend Models with Random Intercept and Random Slope

23

1.4 Mean Structures and Variance Covariance Structures

24

1.4.1 Mean Structures

24

1.4.2 Variance Covariance Structures

25

1.5 Inference

29

1.5.1 Maximum Likelihood Method

29

1.5.2 Variances of Estimates of Fixed Effects

32

1.5.3 Prediction

32

1.5.4 Goodness of Fit for Models

34

1.5.5 Estimation and Test Using Contrast

34

1.6 Vector Representation

35

References

36

2 Autoregressive Linear Mixed Effects Models

38

2.1 Autoregressive Models of Response Itself

38

2.1.1 Introduction

38

2.1.2 Response Changes in Autoregressive Models

40

2.1.3 Interpretation of Parameters

43

2.2 Examples of Autoregressive Linear Mixed Effects Models

45

2.2.1 Example Without Covariates

46

2.2.2 Example with Time-Independent Covariates

47

2.2.3 Example with a Time-Dependent Covariate

48

2.3 Autoregressive Linear Mixed Effects Models

49

2.3.1 Autoregressive Form

49

2.3.2 Representation of Response Changes with Asymptotes

53

2.3.3 Marginal Form

55

2.4 Variance Covariance Structures

56

2.4.1 AR(1) Error and Measurement Error

56

2.4.2 Variance Covariance Matrix Induced by Random Effects

59

2.4.3 Variance Covariance Matrix Induced by Random Effects and Random Errors

61

2.4.4 Variance Covariance Matrix for Asymptotes

62

2.5 Estimation in Autoregressive Linear Mixed Effects Models

63

2.5.1 Likelihood of Marginal Form

63

2.5.2 Likelihood of Autoregressive Form

64

2.5.3 Indirect Methods Using Linear Mixed Effects Models

65

2.6 Models with Autoregressive Error Terms

67

References

69

3 Case Studies of Autoregressive Linear Mixed Effects Models: Missing Data and Time-Dependent Covariates

70

3.1 Example with Time-Independent Covariate: PANSS Data

70

3.2 Missing Data

72

3.2.1 Missing Mechanism

72

3.2.2 Model Comparison: PANSS Data

74

3.3 Example with Time-Dependent Covariate: AFCR Data

79

3.4 Response-Dependent Modification of Time-Dependent Covariate

83

References

85

4 Multivariate Autoregressive Linear Mixed Effects Models

87

4.1 Multivariate Longitudinal Data and Vector Autoregressive Models

87

4.1.1 Multivariate Longitudinal Data

87

4.1.2 Vector Autoregressive Models

88

4.2 Multivariate Autoregressive Linear Mixed Effects Models

90

4.2.1 Example of Bivariate Autoregressive Linear Mixed Effects Models

90

4.2.2 Autoregressive Form and Marginal Form

92

4.2.3 Representation of Response Changes with Equilibria

95

4.2.4 Variance Covariance Structures

96

4.2.5 Estimation

98

4.3 Example with Time-Dependent Covariate: PTH and Ca Data

100

4.4 Multivariate Linear Mixed Effects Models

104

4.5 Appendix

106

4.5.1 Direct Product

106

4.5.2 Parameter Transformation

106

References

107

5 Nonlinear Mixed Effects Models, Growth Curves, and Autoregressive Linear Mixed Effects Models

109

5.1 Autoregressive Models and Monomolecular Curves

109

5.2 Autoregressive Linear Mixed Effects Models and Monomolecular Curves with Random Effects

114

5.3 Nonlinear Mixed Effects Models

115

5.3.1 Nonlinear Mixed Effects Models

115

5.3.2 Estimation

117

5.4 Nonlinear Curves

118

5.4.1 Exponential Functions

119

5.4.2 Gompertz Curves

119

5.4.3 Logistic Curves

120

5.4.4 Emax Models and Logistic Curves

122

5.4.5 Other Nonlinear Curves

123

5.5 Generalization of Growth Curves

124

References

127

6 State Space Representations of Autoregressive Linear Mixed Effects Models

128

6.1 Time Series Data

128

6.1.1 State Space Representations of Time Series Data

129

6.1.2 Steps for Kalman Filter for Time Series Data

130

6.2 Longitudinal Data

132

6.2.1 State Space Representations of Longitudinal Data

132

6.2.2 Calculations of Likelihoods

133

6.3 Autoregressive Linear Mixed Effects Models

134

6.3.1 State Space Representations of Autoregressive Linear Mixed Effects Models

134

6.3.2 Steps for Modified Kalman Filter for Autoregressive Linear Mixed Effects Models

137

6.3.3 Steps for Calculating Standard Errors and Predicted Values of Random Effects

140

6.3.4 Another Representation

141

6.4 Multivariate Autoregressive Linear Mixed Effects Models

141

6.5 Linear Mixed Effects Models

143

6.5.1 State Space Representations of Linear Mixed Effects Models

143

6.5.2 Steps for Modified Kalman Filter

145

References

147

Index

148