Contents
Chapter 1 | Introduction ................................................................................................................................. 1
Chapter 2 |Literature Review ......................................................................................................................... 4
Chapter 3 | Conceptual Framework and Hypothesis ................................................................................ 12
Chapter 4 | Data and Methods ..................................................................................................................... 15
Chapter 5 | Results ........................................................................................................................................ 27
Cgapter 6 | Discussion ................................................................................................................................... 39
Chapter 7 | Conclusions ................................................................................................................................ 48
About the Authors .......................................................................................................................................... 50
Bibliography ....................................................................................................................................................52
Annex A Rescaled Control Summary ........................................................................................................... 55
Annex B Presentation of Estimating Equation ............................................................................................ 57
Annex C Model Diagnostics ........................................................................................................................... 60