Joseph T F Lau

Sun Yat-Sen University, Shengcheng, Guangdong, China

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Publications (245)683.45 Total impact

  • Phoenix K H Mo, Jing Gu, Joseph T F Lau, Hua You
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    ABSTRACT: Sexually transmitted disease (STD) increases risk of HIV infection and has profound psychological consequences. The present study examined the mental health problems (poor emotional well-being, insomnia, probable depression) and their associated factors among monogamous Chinese female STD patients. A total of 537 Chinese female STD patients who self-reported having had only one male sex partner in the last 12 months were recruited from a STD clinic in Hong Kong. They completed a survey including measures of mental health, STD-related history, perceptions, feelings related to STD infection, and perceptions toward condom use. Results showed that 22% had poor emotional well-being, 25.7% had insomnia, and 43% were probable cases of depression. Unemployment, worsened relationship with partners after STD diagnosis, STD history in last three months, finding STD examinations embarrassing, and feelings of helplessness were significant risk factors for poor emotional well-being and insomnia. Also, unemployment, worsened relationships with partners after STD diagnosis, and perceived high chance of STD in the coming six months were significant risk factors for probable depression. Perceived efficacy of condom use for STD prevention was a significant protective factor against poor emotional well-being and probable depression. Findings suggest that interventions are warranted to improve the mental health among this population.
    AIDS Care 11/2014; · 1.60 Impact Factor
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    ABSTRACT: Objective Female injection drug users who are also sex workers (FSW-IDUs) occupy a pivotal population in HIV transmission, whereas their mental health problems are largely overlooked. We aimed to investigate prevalence and associated socio-ecological factors of depression, suicidal ideation and suicidal attempts among FSW-IDUs in China. Methods Using snowball sampling methods, 200 FSW-IDUs were recruited from communities in Liuzhou, China. Anonymous face-to-face interviews were administered by trained doctors. Results Thirty-nine percent of participants had severe or extremely severe depression, 44.7% had suicidal ideation in the last six months and 26.8% had suicidal attempts in the last six months. After adjusting for background variables, self-stigma was significantly associated with severe or extremely severe depression (OR = 1.18, 95% CI: 1.07-1.31). Self-stigma (OR = 1.08, 95% CI: 1.01-1.15), depression (OR = 1.11, 95% CI: 1.05-1.18), having completely broken up with family (OR = 2.60, 95% CI: 1.35-5.02) and having been abused by clients or gatekeepers (OR = 2.15, 95% CI: 1.32-3.50) were associated with suicidal ideation in the last six months, while self-stigma (OR = 1.03, 95% CI: 1.10-1.16), depression (OR = 1.12, 95% CI: 1.04-1.20) and being abused by clients or gatekeepers (OR = 2.15, 95% CI: 1.09-4.24) were associated with suicidal attempt in the last six months. In mediation analyses, the associations between self-stigma and the two suicidal outcomes were fully mediated by depression. Conclusions There are unmet mental health needs of FSW-IDUs. Screening of mental health problems should be integrated into current HIV-related services. Psychological intervention efforts should include components such as self-stigma, family support and abuse.
    Drug and Alcohol Dependence 09/2014; · 3.28 Impact Factor
  • Wei Liao, Joseph T F Lau, Hi Yi Tsui, Jing Gu, Zixin Wang
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    ABSTRACT: Compulsivity is defined as "an insistent, repetitive, intrusive, and unwanted urge to perform specific acts often in ritualized or routinized fashions." Sexual compulsivity has been shown to be associated with some high risk sexual behaviors related to HIV and sexually transmitted infection (STI). In some Western countries, the 10-item Sexual Compulsivity Scale (SCS) has been developed to assess people's sexual compulsivity but no Chinese version has been validated. This study validated the Chinese version of the SCS and investigated its associations with specific sexual behaviors. In 2008, a random telephone survey was conducted in the sexually active male general population in Hong Kong, interviewing 1,048 participants. The Chinese version of the SCS was found to be internally consistent (Cronbach's α = 0.88 for the overall scale), with a mean total score of 20.7 (SD = 4.7). An exploratory factor analysis procedure extracted two factors that were named Controllability and Functional Consequences. Higher SCS scores were associated with multiple female sexual partnerships in the last 6 months, having had sex with either non-regular partner(s) or female sex worker(s) in the last 6 months, having contracted STI in the last 6 months, and inconsistent condom use with either non-regular partner(s) or female sex worker(s) in the last 6 months. The scale can be used to assess sexual compulsivity among sexually active Chinese men in Hong Kong. It can potentially be used in other Chinese communities. Further confirmatory studies are warranted.
    Archives of Sexual Behavior 07/2014; · 3.53 Impact Factor
  • Phoenix K H Mo, Joseph T F Lau, Xiaonan Yu, Jing Gu
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    ABSTRACT: Human immunodeficiency virus (HIV) carries a high level of stigma to the HIV-infected individuals and their family members. Children of HIV-infected parents in China are particularly affected. The present study examined the relationship between associative stigma, self-esteem, optimism, anxiety and depression among 195 children of HIV-infected parents in rural China. Findings showed that more than one-third (35.4 %) of the participants scored higher than cut-off for depression; and 23.6-67.7 % of them scored higher than cut-off for different types of anxiety disorders. Structural equation modelling revealed that associative stigma had a significant negative relationship on self-esteem and optimism, which were associated with higher levels of depression and anxiety. The indirect effects of associative stigma on depression and anxiety were significant. The overall model showed a satisfactory fit. Findings suggest that associative stigma has a significant negative impact on mental health of children affected by HIV. Interventions to reduce their associative stigma are warranted.
    AIDS and Behavior 05/2014; · 3.49 Impact Factor
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    Yong Cai, Joseph T F Lau
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    ABSTRACT: The HIV prevalence and incidence among men who have sex with men (MSM) are high. Unprotected anal intercourse (UAI) with male regular partners (RP) is an important but under-emphasized risk behavior. The current study aimed to describe the prevalence of UAI with regular partner and the associated multi-dimensional factors with UAI among MSM in Hong Kong, China. Respondent Driven Sampling method was used to recruit participants. A total of 285 participants were recruited, of whom 211 (75.1%) had had anal sex with RP in the last six months and their data were analyzed in this report. Weighed data were presented and logistic regression methods were fit. Participants' high risk behaviors in the last six months included high prevalence of having had UAI with RP (45.8%), having had non-regular male sex partners (NRP: 27.3%) and UAI with such partners (18.9%). Adjusted for socio-demographic variables, factors associated with UAI with RP included: 1) substances use prior to having anal sex (65.7% versus 43.8%; AOR =2.36; 95% CI =1.07-5.18), 2) worry that condom use symbolizes mistrust (67.9% versus 44.3% ; AOR = 2.91; 95% CI =1.19-7.10), 3) a lower perceived degree of the RP's acceptance of condom use (91.7% versus 38.3%; AOR = 22.70; 95% CI =6.20-83.10), and 4) a higher level of impulsivity (61.1% versus 35.0%; AOR =4.02; 95% C I = 1.62-9.97). Two of these four variables, substances use (ORm = 2.28, 95% CI = 1.01-5.16) and perceived lower level of RP's acceptance of condom use (ORm = 17.22; 95% CI = 5.06-58.62) were selected by the forward stepwise logistic regression model. MSM with RP in Hong Kong is subjected to high risk of HIV transmission. Risk factors of UAI are multi-dimensional and interventions need to take into account factors of structural, interpersonal and individual levels.
    BMC Infectious Diseases 04/2014; 14(1):205. · 2.56 Impact Factor
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    ABSTRACT: Methadone maintenance treatment (MMT) is a key risk reduction measure for controlling HIV transmission among drug users. Studies using traditional methods exist to distinguish between drop outs and nondrop outs. However, many nondrop outs use MMT discontinuously and no study has identified situation-specific factors predicting their showing or not showing up. This study used a case-crossover design comparing situation-specific factors appearing on the last episode of attendance versus those of the last episode of nonattendance. A total of 133 participants were recruited from two MMT clinics in Guangzhou, China. Participants were asked separately whether various situation-specific factors existed in the last episodes of nonattendance and attendance of MMT. Matched odds ratios (ORs) based on conditional logistic regression analysis were presented. The results showed that the participants attended the MMT clinics on average for 25 days in the last month. Situation-specific factors significantly predicting nonattendance included: (1) physical and mental health status: in illness (OR = 33.0, P < 0.001), in a bad mood (OR = 7.5, P < 0.001), and occurrence of an unhappy event (OR = 18.0, P < 0.001); (2) other engagement: work engagement (OR = 40.0, P < 0.001), trip to other places (OR = 83.0, P < 0.001), and social activities (OR = 10.0, P = 0.012); (3) interpersonal relationship: conflicts with family (OR = 19.0, P = 0.004); and (4) structural situational factors: financial difficulty (OR = 19.0, P = 0.004) and worrying about police arrest (OR = 12.0, P = 0.003). Other factors such as interaction with drug users and heroin use were marginally significant, while reduced methadone dosage was nonsignificant. Interventions to improve MMT adherence need to consider situation-specific factors. Ancillary psychosocial services should be integrated with current MMT; MMT should also provide more flexible services to the clients. Furthermore, efforts should be taken to build up interdisciplinary teams and to connect with MMT in order to provide holistic harm reduction, rehabilitation, and health care.
    AIDS Care 04/2014; · 1.60 Impact Factor
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    ABSTRACT: In China specific HIV/AIDS-related services have been in place since 2004. However, utilisation of these services remains limited among people living with HIV. We explored barriers to accessing HIV/AIDS-related services from the perspective of newly diagnosed HIV-positive men who have sex with men. We conducted repeated in-depth interviews with 31 newly diagnosed HIV-positive men who have sex with men, using the socio-ecological framework and thematic content analysis. Multiple barriers for utilisation of HIV/AIDS-related services were identified, including perceptions of subjective health and poor quality of services, mental and emotional health problems, lack of trust and understanding of the services on offer, low economic status, lack of insurance, and high medical fees, being refused access to services, and restrictive attendance policies. The findings provide information on potential multi-level obstacles preventing newly diagnosed HIV-positive men who have sex with men to use services that they need. It is recommended that policy makers should create a trustful and non-discriminating environment and services integrating physical and mental healthcare.
    International Journal of STD & AIDS 03/2014; · 1.04 Impact Factor
  • Joseph T F Lau, Jinghua Li, K C Choi, Jing Gu
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    ABSTRACT: Chinese monogamous women may contract sexually transmitted diseases (STD) from their sole male sex partner, but these women do not have high self-efficacy in negotiating about condom use with their regular sex partners. We aim to investigate the relative efficacy of a theory-based and clinic-based cognitive behavioral intervention versus a control intervention in increasing prevalence of condom use with their male sex partner among Chinese monogamous female sexually transmitted disease patients. A randomized controlled trial (RCT) was conducted. Participants were randomly allocated into the intervention group (n = 88) or the control group (n = 88). All participants were phone interviewed at baseline and at 2 and 3 months after completion of the baseline survey. The three-session group intervention was based on the information-motivation-behavioral skills (IMB) model. Participants of the control group were provided with educational pamphlets. The primary outcome was consistent condom use in the last month. Relative risks were calculated, and multiple logistic regression models were fit. As compared to the control group, the intervention group reported higher prevalence of consistent condom use with the sole male sex partner in the last month at month 2 (75.3 versus 59.8 %, RR = 1.26, 95 % CI = 1.01, 1.57) and month 3 (77.8 versus 54.6 %, RR = 1.42, 95 % CI = 1.13, 1.80), whilst the baseline between-group difference was statistically non-significant. Some other secondary outcomes such as "intention to request condom use in the next month even if the sexual partner dislikes using condoms" were also statistically significant. Furthermore, the majority (94 %) of the intervention group members were satisfied with the intervention. The theory-based intervention is potentially efficacious, but the follow-up period was relatively short. Large-scale randomized clinical trials and subsequent translational research are greatly warranted in the future.
    International Journal of Behavioral Medicine 02/2014; 21(4). · 2.63 Impact Factor
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    ABSTRACT: Condom use is often equated to safer sex. The prevalence of condom use during sex work among female sex workers (FSW) in China is high. Condom use, however, co-exists with condom failure and improper use and hence risk of HIV transmission. In a cross-sectional study, we interviewed 195 FSW in Shenzhen, China. The prevalence of condom use in the last episode of sex work was 97.4 %, However, respectively 53.8 and 86.2 % had experienced at least one condition of condom failure that may lead to genital contact (wearing condoms after penetration, condom breakage/slippage, condoms removed by clients) and at least one condition of improper condom use (not removing air from the tip of the condom, not pulling it down to the root of penis and not choosing good quality condoms). Factors of individual level (e.g. never choosing high quality condoms for sex work), inter-personal level (e.g. agreement to have unprotected sex if fond of clients or paid more) and environmental/structural level (e.g. non-availability of condoms) were associated with various types of condom failure and improper use. Although HIV prevention interventions have increased prevalence of condom use among FSW, the risk of HIV transmission may still be high as "unsafe" sex due to condom failure and improper use is prevalent. Interventions promoting safer sex need to address such issues and take socio-ecological factors into account. Condom use during sex work is not equivalent to well protected sex as the protective effects could be compromised by frequent condom failure and improper use.
    AIDS and Behavior 01/2014; · 3.49 Impact Factor
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    ABSTRACT: Few studies compared HIV-related risk behaviors between cities with different sociocultural environments among men who have sex with men (MSM). This study investigated the prevalence of unprotected anal intercourse (UAI) and associated individual and socio-cultural factors among Chinese MSM in Hong Kong and Shenzhen in Mainland China, which were proximal to each other but experienced different socioeconomic developments. Amongst all the 535 participants, 40.2% had had UAI. Significant factors of UAI among Shenzhen MSM included being able to find someone to share one's sexual orientation, disclosure of sexual orientation to family members, HIV risk perception, and use of alcohol or substances (adjusted OR ranged from 2.37 to 4.91), whilst disclosure of sexual orientation to family members was the only significant factor among Hong Kong MSM (adjusted OR = 1.64). Geographic variations in factors associated with UAI were observed. Future research and interventions need to take this into account.
    BioMed Research International 01/2014; 2014:970975. · 2.71 Impact Factor
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    ABSTRACT: Purpose of Review. Numerous studies reported the rapid spread of HIV/AIDS epidemic among men who have sex with men (MSM) in China. This paper aims to investigate the overall epidemic trend and associated high-risk behaviours among Chinese MSM and to explore the governmental and community responses to the epidemic. Recent Findings. HIV prevalence among Chinese MSM increased rapidly in all Chinese regions in the past decade and disproportionally affected the Southwest China. In addition to the high-risk homosexual behaviours, overlapping bisexual, commercial, and drug use behaviours are commonly observed among Chinese MSM. The Chinese government has significantly expanded the surveillance efforts among MSM over the past decade. Community responses against HIV have been substantially strengthened with the support of international aid. However, lack of enabling legal and financial environment undermines the role of community-based organisations (CBOs) in HIV surveillance and prevention. Conclusion. HIV continues to spread rapidly among MSM in China. The hidden nature of MSM and the overlapping homosexual, bisexual, and commercial behaviours remain a challenge for HIV prevention among MSM. Strong collaboration between the government and CBOs and innovative intervention approaches are essential for effective HIV surveillance and prevention among MSM in China.
    BioMed research international. 01/2014; 2014:607261.
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    ABSTRACT: This study investigated event-specific factors that determine episodes of unprotected and protected anal intercourse (UAI and PAI) among 215 men who have sex with men (MSM), who used condoms inconsistently with nonregular partners (NRP) in the last six months, in Hong Kong. A case-crossover study design was used. Lower likelihood of episodes involving UAI with NRP was associated with (1) five partner attributes (NRP were <35 years old, at least three previous anal sex experiences with the NRP, perception that participant and the NRP had asymmetrical sexual experience, perception that the NRP was feminine, and liking toward the NRP; OR = 0.16-0.52), (2) six situational variables (the participant having had UAI with another man in the last week, having discussed condom use, perception that the NRP liked to use condom, partner's suggestion to have PAI, participant's suggestion to have PAI, and participant's plan to use condoms; OR = 0.11-0.39), and (3) four environmental/setting variables (condoms already placed at the venue, display of condom use promotion materials, participant's possession of a condom, and the NRP possessed a condom; OR = 0.27-0.45). HIV prevention targeting MSM should focus on event-specific protective factors, which may be different from those obtained from studies distinguishing condom users versus nonusers.
    BioMed Research International 01/2014; 2014:475195. · 2.71 Impact Factor
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    ABSTRACT: In China specific HIV/AIDS health services (e.g. Four Free and One Care) have been available since 2004. However knowledge of utilizing these services among Chinese people living with HIV/AIDS (PLWH) remains limited. The aim of this qualitative study was therefore to examine health service seeking behaviors and associated factors from the perspective of newly diagnosed HIV positive men who have sex with men (NHIVMSM). We conducted repeated in-depth interviews with 31 NHIVMSM from January to September 2010 in a southern city in China. Thematic content analysis was performed. These NHIVMSM reported non-uptake of free health services or reluctance in seeking other health care. The results identified multiple barriers towards utilization of health services, in keeping with the constructs of the socio-ecological model utilized. These identified barriers served to explain health-related behaviors reported, including low health literacy, mental and emotional health problems, cognitive dissonance, perceived poor quality of services, economic hardship, refusal of access to services, lack of professional support, and restrictive policies. The results provide culturally derived contextual insights to inform the development of socially effective health prevention and intervention services for HIV positive MSM in contemporary China. These include improving mental health services, capacity building of local CDC and NGOs, reforming a non-discriminating health-care referral system, and advocating for alternative health services and self care strategies.
    141st APHA Annual Meeting and Exposition 2013; 11/2013
  • Joseph T F Lau, Jing Gu, Hi Yi Tsui, Zixin Wang
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    ABSTRACT: We investigated the prevalence and associated factors of men have sex with men (MSM) who had never participated in HIV voluntary counseling and testing (VCT) but intended to do so in the next six months. An anonymous cross-sectional survey interviewed 577 MSM in Hong Kong, China, face-to-face or through an electronic questionnaire. We identified 245 MSM who had never participated in VCT (never-testers), among whom 12.7% intended to do so in the next six months. Factors associated positively with high behavioral intention were: 1) perceived necessity to participate in HIV test regularly (ORm=4.54, 95%CI: 1.30-15.83), 2) perception that >20% of the local MSM had participated in VCT (ORm=17.86, 95%CI: 1.89-169.08) and 3) perceived higher chance to have sex with PLWH in the next six months (ORm=2.92, 95%CI: 1.08-7.93). Negatively associated factors were: local residency (ORm=0.06, 95%CI: 0.01-0.34) and perceived higher chance of having UAI in the next six months (ORm=0.27, 95%CI: 0.09-0.84). In addition, no interaction term between the independent variable and UAI status was found to be statistically significant. Many sampled never-testers had low intention to take up VCT and were in the pre-contemplation stage of the Transtheoretical Model. Stage-matched promotions are warranted.
    Preventive Medicine 09/2013; · 2.93 Impact Factor
  • Joseph T F Lau, Zixin Wang, Mason Lau, Coco H Y Lai
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    ABSTRACT: The prevalence of HIV and HPV is high among men who have sex with men (MSM) in China. It is unclear whether cognitive and affective responses related to HPV and HPV-related diseases are negatively associated with HIV-related risk behaviors among MSM. This cross-sectional study interviewed 449 adult Chinese MSM in Hong Kong. The prevalence of unprotected anal intercourse (UAI) and having had anal sex with more than one man in the last 6 months (multiple male sex partnerships) was 39.0 and 71.3 %, respectively. After adjusting for four significant background variables (education level, cohabitation with a man, exposure to HIV prevention materials, and HIV voluntary counseling and testing), variables negatively associated with UAI and/or multiple male sex partnerships included (1) correct HPV-related knowledge (AOR = 0.48-0.66), (2) perceived susceptibility (AOR = 0.32-0.55) and perceived severity (AOR = 0.12-0.60) related to HPV and HPV-related diseases, and (3) fear towards contracting genital warts and penile/anal cancer (AOR = 0.40-0.55). Perceived high chance of contracting HPV was positively associated with multiple partnerships (AOR = 4.74). It is possible to reduce HIV-related risk behaviors by increasing levels of knowledge, cognitions, and fear related to HPV and related diseases. It is important to integrate prevention of HIV with prevention of sexually transmitted infections. Such interventions are warranted.
    Archives of Sexual Behavior 08/2013; 43(4). · 3.53 Impact Factor
  • Zixin Wang, Joseph T F Lau, Mason Lau, Coco H Y Lai
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    ABSTRACT: Men who have sex with men (MSM) are at high risk of contracting HIV and developing genital warts and penile/anal cancers. HPV vaccines are efficacious in preventing such HPV-related diseases among males and WHO recommends its use to young MSM. In a cross-sectional survey, 542 MSM were interviewed. After being briefed about the vaccines' efficacies and the market price, the prevalence of acceptability of HPV vaccination was 29.2%. Adjusted by significant background variables, perceived high/very high chances of contracting genital warts [adjusted odds ratio (AOR)=2.04, 95%CI=1.11-3.72] and penile/anal cancers (AOR=1.89, 95%CI=1.09-3.29) among local MSM, perceived moderately high mortality rate of penile/anal cancers (AOR=1.78, 95%CI=1.13-2.81), fear toward penile/anal cancers (moderate: AOR=1.75, 95%CI=1.07-2.86; high/very high: AOR=1.82, 95%CI=1.13-2.92) and disagreement with the statement "MSM in general are not willing to take HPV vaccines" (AOR=1.82, 95%CI=1.24-2.68) were associated with the conditional acceptability. Acceptability of this new measure is reasonably high and there are rooms for improvement. Implementation trials to promote HPV vaccination by changing cognitions such as HPV-related risk perceptions, norms and perceptions toward anal/penile cancer are greatly warranted.
    Vaccine 07/2013; · 3.49 Impact Factor
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    ABSTRACT: Aim: In an effort to promote Hong Kong as a global wine hub, the government eliminated duties on wine and beer in 2008. The changes in alcohol consumption patterns are examined. Methods: Anonymous, cross-sectional telephone surveys on a random sample of Chinese male and female residents aged 18-70 were carried out in 2011 (n = 4800) and 2012 (n = 1001). These data were compared with those of a 2006 (n = 9896) baseline survey conducted before the excise tax elimination. Results: Prevalence of those ever drinking alcohol significantly increased from the 2006 baseline level of 66.6% to 82.0% in 2011 and to 85.2% in 2012. Of note, 10.2% of ever drinkers within the 2012 sample reported consuming alcohol for the first time in or after 2008. Younger, more educated or more affluent parts of the population are more likely to be ever drinkers. Unexpectedly, prevalence of binge drinking in the population decreased slightly from the 2006 baseline of 9.0% to 7.1% in 2011 and to 7.3% in 2012. Quantity of alcohol reportedly consumed by individuals did not change, while alcohol abuse and alcohol dependence levels decreased. However, binge drinking prevalence among the unemployed has increased. Logistic regression showed that those with lower educational achievement and the unemployed have higher likelihood of binge drinking. Conclusion: The government appears to have achieved its objective of making Hong Kong a world center for alcohol trade. However, the resulting access locally to cheaper alcohol has been associated with an increase in the numbers of those drinking alcohol. There has been a trend toward more adults drinking alcohol and greater risk of harm to some disadvantaged groups.
    Alcohol and Alcoholism 07/2013; · 1.96 Impact Factor
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    ABSTRACT: OBJECTIVES: This study compares the prevalence of health-related behaviors and mental health well-being in the Hong Kong general male population before and after the 2006 World Cup finals. Study design. Two anonymous, serial, comparable cross-sectional surveys. METHODS: . A total of 500 and 530 adult Chinese men, respectively, were interviewed in 2 telephone surveys before and after the finals. RESULTS: Those interviewed after the World Cup were more likely to eat snacks more than 3 d/wk, to be binge drinkers, or to spend more than 2 h/d communicating with family members. They were less likely to have higher General Health Questionnaire or lower Short Form-36 Health Survey Vitality scores (odds ratio [OR] = 0.684 and 0.765), to perceive family-related or work-related stress (OR = 0.327 and 0.345), or to self-report being sick or have visited a doctor (OR = 0.645 and 0.722). All variables between watchers versus nonwatchers of World Cup games were significant or marginally significant. CONCLUSIONS: Public health education should be incorporated into global sport events.
    Asia-Pacific Journal of Public Health 05/2013; · 1.11 Impact Factor
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    ABSTRACT: The HIV epidemic among men who have sex with men (MSM) in China is severe. Peer can induce risky and preventive behaviors among MSM. We interviewed 220 MSM who had at least one significant other who was a peer MSM (SOPM). Interviews were conducted at two gay venues in Suzhou, China, which reported five HIV-related outcomes: HIV (8.2 %), syphilis (16.4 %), self-reported sexually transmitted infection symptoms (14.6 %), unprotected anal intercourse (UAI; 58.6 %) and having had taken up HIV testing (40.4 %). Adjusting for significant background variables, participants' perceived characteristics of the social network of SOPM, such as practicing risk behavior (e.g. UAI) or preventive behaviors (e.g. HIV antibody testing), or possessing HIV-related perceptions (e.g. dislike in condom use), were significantly associated with some of the five aforementioned outcomes (p < 0.05). Peer education and peer-based interventions involving significant others are hence potentially important in HIV prevention targeting MSM. Future pilot intervention studies are warranted.
    AIDS and Behavior 05/2013; · 3.49 Impact Factor
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    ABSTRACT: Increasing prevalence of sexually transmitted diseases (STD) was reported among men who have sex with men (MSM) in China. A total of 407 MSMs were recruited by respondent-driven sampling (RDS) from May to July 2008 in Nanjing, China. Face-to-face interviews were conducted to collect information on demographic and risk behaviors; blood samples were collected for HIV and syphilis antibodies testing. The adjusted HIV and syphilis prevalence were, respectively, 7.3% (confidence interval [CI] = 2.6%-10.2%) and 14.4% (95% CI = 9.3%-21.1%). Recruiting male sex partners mostly from saunas and receptive anal intercourse with men in the last 6 months were independently associated with positive HIV status. Risk factors for positive syphilis status included being older than 28 years, low level of HIV-related knowledge, having been a male sex worker, and having unprotected anal sex with casual male sex partners in the past 6 months. High HIV/STD prevalence was detected. HIV/STD prevention strategies are urgently warranted.
    Asia-Pacific Journal of Public Health 03/2013; · 1.11 Impact Factor

Publication Stats

4k Citations
683.45 Total Impact Points


  • 2011–2014
    • Sun Yat-Sen University
      • School of Public Health
      Shengcheng, Guangdong, China
  • 2013
    • China Academy of Chinese Medical Sciences
      Peping, Beijing, China
    • Jiangsu Provincial Center for Disease Control and Prevention
      Chiang-tu, Jiangsu Sheng, China
  • 1998–2013
    • Prince of Wales Hospital, Hong Kong
      Chiu-lung, Kowloon City, Hong Kong
  • 2012
    • Nanjing Medical University
      • School of Public Health
      Nanjing, Jiangsu Sheng, China
    • Guangzhou Center for Disease Control
      Shengcheng, Guangdong, China
  • 1994–2012
    • The Chinese University of Hong Kong
      • • The Jockey Club School of Public Health and Primary Care
      • • Department of Public Health
      • • Faculty of Medicine
      • • Prince of Wales Hospital
      • • Department of Obstetrics and Gynaecology
      • • Center for Clinical Trials and Epidemiological Research
      Hong Kong, Hong Kong
  • 2007
    • The University of Hong Kong
      Hong Kong, Hong Kong
  • 2002
    • University of Wolverhampton
      • School of Sport, Performing Arts and Leisure
      Wolverhampton, ENG, United Kingdom
  • 1995
    • Oxford University Hospitals NHS Trust
      Oxford, England, United Kingdom