Joo-Heon Kim

Prevalence of male and female sexual problems, perceptions related to sex and association with quality of life in a Chinese population: a population-based study

The prevalence of sexual problems (SP) and sexual satisfaction and their associations with sex-related perceptions and quality of life (QOL) were investigated by interviewing 3257 and 1568 Chinese adults in Hong Kong by a specially designed computerized telephone-interviewing method. SP was prevalent among male (50.9%) and female (54%) respondents; approximately 50% were dissatisfied with their sexual life. Of respondents, 23.9% of men and 5.9% of women perceived sex as important and 52.5% for men and 33.8% of women reported adequate sexual knowledge. The prevalence of SP ranged from 3.4% (pain) to 29.7% (premature orgasm) for men and 6.9% (anxiety) to 24.7% (lack of interest) for women. Prevalence of erectile and lubrication problems were 9.6 and 23.6%, respectively. Sex-related knowledge, perceived importance of sex, perceived physical health status, sexual satisfaction were predictors of SP. Gender differences and strong cultural influences appear to exist. Moreover, SP and sexual satisfaction were associated with mental health and vitality QOL and overall life satisfaction.

HIV related behaviours and attitudes among Chinese men who have sex with men in Hong Kong: a population based study

Objective: This study was conducted in order to determine the prevalence of men having sex with men (MSM) and their HIV related behaviours and attitudes among Chinese men in Hong Kong. Methods: A large scale, random, population based, anonymous telephone survey of 14 963 men between the ages of 18–60 was conducted. The overall response rate was approximately 57%. Results: Of the respondents, 4.6% had ever engaged in MSM activity. In the 6 months preceding the survey, 2.0% had engaged in MSM behaviours (active MSM) and 0.5% reported having engaged in anal sex MSM behaviours. Among anal sex MSM, consistent condom use was 42.9% with male non-commercial sex partners and even lower with male commercial sex partners (35.7%). Approximately 11% of anal sex MSM and 4.1% of the non-anal sex MSM had contracted an STD in the last 6 months. The prevalence of HIV testing was only 20.6% among anal sex MSM and 11.9% among non-anal sex MSM. Conclusions: Active MSM in Hong Kong are at high risk of HIV infection. The belief of low vulnerability to HIV is prevalent among active MSM in Hong Kong with only 2.0% believing that their chances of HIV infection as being “very likely.”

Perceptions Related to Bird-to-Human Avian Influenza, Influenza Vaccination, and Use of Face Mask

Background:H5N1 avian influenza may become pandemic in humans in the near future. According to the severe acute respiratory syndrome (SARS) experience, anticipation of the pandemic may have impact on behaviors related to influenza vaccination (IV) and relevant public health behaviors such as wearing a face mask when having influenza-like-illnesses (ILI), which would play an important role in the control of human avian influenza outbreaks. This paper investigated the prevalence and factors related to IV uptake and use of face mask in public venues when having ILI symptoms.Methods:An anonymous cross-sectional population-based random telephone survey of 302 Hong Kong Chinese adults aged 18–60, using a structured questionnaire, was conducted in November 2005.Results:In the last 3 months, 17.9% of the respondents received IV; 36.6% of those presenting ILI symptoms often used face mask in public venues. Anticipation of a bird-to-human H5N1 outbreak, perceptions that such an outbreak would be worse than SARS, that IV was efficacious in preventing bird-to-human avian influenza transmission were associated with the studied IV behavior (OR=2.64–3.97, p < 0.05). Exposure to live birds, perceived similar symptoms between influenza and bird-to-human H5N1 avian influenza, that bird-to-human avian influenza was more lethal than SARS were predictive use of face mask when having ILI symptoms (OR = 4.25–8.34, p < 0.05).Conclusion:The prevalence of IV and use of face mask in the study population may be increasing, which may be related to concerns of avian influenza. Perceptions related to human avian influenza were associated with IV and mask use behaviors. This can potentially be turned into opportunities of promoting desirable public health behaviors.

Impacts of media coverage on the community stress level in Hong Kong after the tsunami on 26 December 2004

Study objectives: The study investigated the prevalence and associated factors (media coverage in particular) of stress related responses to the December 2004 tsunami. Design: An anonymous population based cross sectional telephone survey was conducted. Post-traumatic stress symptom was measured by the locally validated Chinese impact of event scale (CIES) and whether the respondent felt disturbed, apprehensive, or horrified because of the tsunami. Items related to media coverage included measures on frequency of exposure, level of distress caused by different types of images, and contents of the news messages were measured. Two summative scores, the weighted image unrest score (WIUS) and weighted content unrest score (WCUS) were formed. Setting: Hong Kong, China. Participants: A total of 604 adult Chinese respondents were interviewed. Main results: Of the respondents, 33.8% were exposed to tsunami related mass media news reports >10 times per day; 56.5% to 64.7% felt severely or very severely disturbed by the six studied types of distressful messages; 52.6% to 71.4% felt similarly because of the eight studied types of distressful contents. Of the male respondents, 30% and 5.9% respectively showed signs of mild or moderate/severe post-traumatic stress symptoms (39% and 8.7%, respectively for women). Higher WIUS and higher WCUS were associated with mild or moderate/severe post-traumatic stress symptoms (multivariate OR = 1.72 to 14.67, p<0.05). These media exposure indicators, together with some other perception variables, were significantly associated with other stress indicators. Conclusions: The intensive media coverage of the tsunami was consistently associated with different types of tsunami related stress indicators.

The impact of cutting alcohol duties on drinking patterns in Hong Kong

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.

Influence of country of study on student responsiveness to the H1N1 pandemic

Summary Objectives University students, both travelling abroad on holiday or exchange students entering a country, can serve as mobile carriers of infectious diseases during a pandemic, and thus require special attention when considering preventive measures. The objectives of this study were to evaluate student compliance and opinions on preventive measures of a university before and during an H1N1 influenza pandemic, and to explore environmental and behavioural factors that might contribute towards compliance. Study design Cross-sectional, self-administered questionnaire. Methods Local and foreign students attending an international summer school programme were invited to participate in a self-administered survey. Results Respondents complied with most of the preventive measures, excluding website viewing and mask wearing. Significant differences in compliance and perceived necessity were found amongst students from Singapore, Hong Kong and the USA. Singaporean students were significantly more likely to comply with all measures and consume antiviral medication in response to the pandemic than students studying in the US. Conclusions Students’ responses towards university pandemic measures were largely positive, but sensitivity towards these measures varied between groups by country of study. This should be considered in further comparative studies.

Alcohol Tax Policy and Related Mortality. An Age-Period-Cohort Analysis of a Rapidly Developed Chinese Population, 1981–2010

To delineate the temporal dynamics between alcohol tax policy changes and related health outcomes, this study examined the age, period and cohort effects on alcohol-related mortality in relation to changes in government alcohol policies. We used the age-period-cohort modeling to analyze retrospective mortality data over 30 years from 1981 to 2010 in a rapidly developed Chinese population, Hong Kong. Alcohol-related mortality from 1) chronic causes, 2) acute causes, 3) all (chronic+acute) causes and 4) causes 100% attributable to alcohol, as defined according to the Alcohol-Related Disease Impact (ARDI) criteria developed by the US Centers for Disease Control and Prevention, were examined. The findings illustrated the possible effects of alcohol policy changes on adult alcohol-related mortality. The age-standardized mortality trends were generally in decline, with fluctuations that coincided with the timing of the alcohol policy changes. The age-period-cohort analyses demonstrated possible temporal dynamics between alcohol policy changes and alcohol-related mortality through the period effects, and also generational impact of alcohol policy changes through the cohort effects. Based on the illustrated association between the dramatic increase of alcohol imports in the mid-1980s and the increased alcohol-related mortality risk of the generations coming of age of majority at that time, attention should be paid to generations coming of drinking age during the 2007–2008 duty reduction.

Does Living Density Matter for Nonfatal Unintentional Home Injury in Asian Urban Settings? Evidence from Hong Kong

Injury is a major global disease burden for the twenty-first century. There are, however, few studies of unintentional household injury in Asian urban settings where living environments are characterized by extremely compact, high-living-density, multistory apartments. This study investigated the association between nonfatal unintentional household injuries with the resident’s sociodemographic attributes and household characteristics in Hong Kong, the city with the world’s highest population density. A cross-sectional retrospective recall study was conducted in May 2007 using a random telephone survey with a modified Chinese version of the World Health Organization Injury and Violence instrument. The study sample included 1,001 noninstitutionalized Cantonese-speaking Hong Kong residents of all ages, including foreign live-in domestic helpers. Multivariate regression was conducted to identify risk factors for nonfatal unintentional injuries in Hong Kong. Among a predominantly adult sample, household size and time spent at home were not associated with nonfatal unintentional household injuries in the general population in Hong Kong. The multivariate analyses indicated that female gender, owners of private homes, lower square footage of living space per person, and those with slip prevention devices in the bathroom were significantly associated with household injuries. Injured and noninjured groups were found to have adopted different injury prevention strategies toward household injuries. The results identified potential target groups for household injury prevention programs.

Association between internet addiction and high- risk sexual attitudes in Chinese university students from Hong Kong and Macau

• Exploration of internet addiction in the largest population of internet users: Chinese adolescents.

Pathophysiological and neurobehavioral characteristics of a propionic acid-mediated autism-like rat model

Autism spectrum disorder (ASD) is induced by complex hereditary and environmental factors. However, the mechanisms of ASD development are poorly understood. The purpose of this study was to identify standard indicators of this condition by comparing clinical, pathophysiological, and neurobehavioral features in an autism-like animal model. A total of 22 male Sprague-Dawley rats were randomly divided into control and 500 mg/kg propionic acid (PPA)-treated groups. Rats were subjected to behavioral tests, gene expression analyses, and histological analyses to detect pathophysiological and neurobehavioral alterations. Exploratory activity and non-aggressive behavior were significantly reduced in PPA-treated rats, whereas enhanced aggressive behavior during adjacent interactions was observed on day 14 after PPA administration. To evaluate gene expression after PPA administration, we analyzed hippocampal tissue using reverse transcription PCR. Glial fibrillary acidic protein was augmented in the PPA-treated group on day 14 after appearance of ASD-like behaviors by PPA administration, whereas octamer-binding transcription factor 4 expression was significantly decreased in the PPA-treated group. Histological evaluation revealed significantly reduced diameter and layer thickness of granule cells in PPA-treated rats compared with control rats. We conclude that PPA administration induced abnormal neural cell organization, which may have led to autism-like neurobehaviors, including increased aggressive behavior, reduced exploratory activity, and isolative and passive behaviors.