Tam, Ka Po. / Thesis submitted in: September 2008. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 151-161). / Abstracts in English and Chinese. / Abstract --- p.i / Acknowledgement --- p.vi / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Human Immunodeficiency Virus --- p.1 / Chapter 1.2 --- Sexual Transmission of HIV --- p.3 / Chapter 1.3 --- HIV Prevalence in MSM Worldwide --- p.5 / Chapter 1.4 --- Risk Factors for Homosexual Men --- p.8 / Chapter 1.4.1 --- Individual Factors --- p.8 / Chapter 1.4.2 --- Societal Factors --- p.12 / Chapter 1.5 --- HIV Prevalence of MSM in Hong Kong --- p.17 / Chapter 2 --- Literature Review --- p.21 / Chapter 2.1 --- The Literature Search --- p.22 / Chapter 2.2 --- Results --- p.25 / Chapter 2.3 --- Reasons to Conduct Social Network Study --- p.26 / Chapter 2.4 --- Review on Methodologies --- p.29 / Chapter 2.4.1 --- Data Source --- p.29 / Chapter 2.4.2 --- Sampling Methods --- p.30 / Chapter 2.5 --- Review on Major Findings --- p.33 / Chapter 2.5.1 --- Individual Characteristics --- p.33 / Chapter 2.5.2 --- Partnerśة Characteristics --- p.34 / Chapter 2.5.3 --- Network Characteristics --- p.38 / Chapter 2.6 --- Critique --- p.40 / Chapter 2.7 --- Implication --- p.46 / Chapter 3 --- Methods --- p.49 / Chapter 3.1 --- Study Design --- p.49 / Chapter 3.1.1 --- Sampling --- p.50 / Chapter 3.1.2 --- Terminology --- p.51 / Chapter 3.2 --- Instruments --- p.56 / Chapter 3.2.1 --- Self-administered Questionnaire --- p.56 / Chapter 3.2.2 --- Demographics --- p.57 / Chapter 3.2.3 --- Setting of Infection --- p.57 / Chapter 3.2.4 --- Partnership Pattern --- p.59 / Chapter 3.2.5 --- Semi-structured Interviewing Guide --- p.61 / Chapter 3.2.6 --- Last Sexual Episode --- p.62 / Chapter 3.2.7 --- Sexual Role --- p.63 / Chapter 3.2.8 --- Partner Selection --- p.63 / Chapter 3.2.9 --- Bem Sex-Role Inventory --- p.64 / Chapter 3.3 --- Data Analysis --- p.66 / Chapter 3.4 --- Ethical Considerations --- p.70 / Chapter 4 --- Results --- p.74 / Chapter 4.1 --- Sampling --- p.74 / Chapter 4.2 --- Characteristics of Respondents --- p.75 / Chapter 4.2.1 --- Demographics --- p.75 / Chapter 4.2.2 --- Settings of Infection --- p.77 / Chapter 4.2.3 --- HIV Test --- p.79 / Chapter 4.3 --- Partnership Pattern --- p.82 / Chapter 4.3.1 --- Partner Types --- p.83 / Chapter 4.3.2 --- Location for Partner Sourcing --- p.84 / Chapter 4.3.3 --- Characteristics of Sex Partners --- p.86 / Chapter 4.3.4 --- Sexual Behavioural Pattern --- p.87 / Chapter 4.3.5 --- The Influence of Partner Types --- p.92 / Chapter 4.3.6 --- Last Sex with Lover(s) and/or Regular Partner(s) --- p.95 / Chapter 4.3.7 --- Sexual Role in Anal Intercourse --- p.98 / Chapter 4.4 --- Networking Pattern --- p.103 / Chapter 4.4.1 --- Individual Network --- p.104 / Chapter 4.4.2 --- Cluster Analysis (with 2-mode correspondence analysis) --- p.108 / Chapter 4.4.3 --- Social Network Analysis --- p.115 / Chapter 5 --- Discussion --- p.122 / Chapter 5.1 --- Possible Existence of 2 Sexual Networks in Hong Kong --- p.123 / Chapter 5.1.1 --- Network Configuration --- p.123 / Chapter 5.1.2 --- Network-related Behaviours --- p.128 / Chapter 5.2 --- Impact of Partnership Pattern on HIV Transmission --- p.129 / Chapter 5.3 --- The Importance of Sexual Role --- p.135 / Chapter 5.4 --- Limitations --- p.136 / Chapter 5.5 --- Implications --- p.141 / Appendices --- p.145 / Chapter A --- Self-administered Questionnaire --- p.145 / Bibliography --- p.151