Prevalence and structure of dental benefit schemes in Hong Kong

Before the impact of employer-provided dental benefit schemes on the dental care delivery system can be evaluated in Hong Kong, the prevalence of these schemes and their structures must be established. A mailed questionnaire survey was conducted of a representative group of companies with more than 100 employees (n = 495). Response rate to the mail survey was 38 per cent (n = 186). Non-respondents were stratified according to their nature of business and one third was randomly selected for a follow-up by telephone to which 84 per cent responded (n = 81). After adjustment, 16 per cent of companies of that size were found to be providing dental benefit schemes to their staff. The prevalence was related to the nature of business of the companies. Among companies providing dental benefits, administrators from selected companies were interviewed. It was found that dental benefit schemes could be broadly divided into two types: One characterised by cash-benefit and the other by service-benefit. Treatment items covered by the schemes were mostly simple services such as diagnostic items, simple restorations and simple extractions. The influence of these dental benefit schemes on the dental care-seeking behaviour of the beneficiaries is under investigation.     

Hong Kong nurses' health-related behaviours: implications for nurses' role in health promotion

The health-related behaviors of a random sample (n = 92) of Hong Kong nurses were assessed by a questionnaire written either in English or in English and Chinese. Hong Kong nurses reported negligible smoking or alcohol use, low levels of breast self-examination, cervical screening behaviour and regular exercising, seat belt use and driving within the speed limit. The sample reported high levels of making efforts to avoid foods high in cholesterol, eating foods high in fibre and eating fruit daily. Dental hygiene was reported to be high. Just over half the sample reported sleeping 7-8 hours each night and eating breakfast daily. Most nurses reported maintaining their body weight at a healthy level and eating snacks between meals. The English language version of the questionnaire produced a slightly better response rate than the bilingual questionnaire. The results are discussed with reference to previous studies of females' health-related behaviours in Hong Kong and elsewhere. The implications for Hong Kong nurses' role in health promotion is discussed.     

Use of the 1997 American Diabetes Association diagnostic criteria for diabetes in a Hong Kong Chinese population

OBJECTIVE: Recently, the American Diabetes Association (ADA) has proposed revised diagnostic criteria for diabetes. Lowering of the fasting plasma glucose (FPG) cutoff value is intended to reduce the discrepancy with the 2-h plasma glucose (PG) cutoff value and to encourage the use of FPG. We have applied these new criteria to data collected from a population-based prevalence survey in Hong Kong Chinese subjects of working age. RESEARCH DESIGN AND METHODS: The results of 1,513 oral glucose tolerance tests (OGTTs) from a previously published prevalence survey of glucose intolerance and cardiovascular risk factors in a Hong Kong Chinese working population were reexamined using the new criteria. Of the 1,513 subjects, 27 had a known history of diabetes. Of the remaining 1,486 subjects, 228 were also selected randomly for a second OGTT without prior knowledge of the result of the first test. RESULTS: After exclusion of the 27 subjects with a known history of diabetes, the crude prevalence of diabetes was 2.83% (n = 42) when the World Health Organization's (WHO) criteria were applied. When the criterion of FPG > or = 7.0 mmol/l was used, as recommended by the ADA, the prevalence of diabetes was 1.41% (n = 21). Twenty-nine subjects (1.95%) with FPG < 7.0 mmol/l had a 2-h PG > or = 11.1 mmol/l. Eight subjects (0.53%), previously without a diagnosis of diabetes according to the WHO criteria (FPG < 7.8 mmol/l and 2-h PG < 11.1 mmol/l), had FPG between 7.0 and 7.8 mmol/l and were classified as having diabetes by the ADA criteria. This classification gave a net change of -1.42% in the prevalence of diabetes between the use of FPG > or = 7.0 mmol/l alone and the use of WHO criteria. Among the 1,486 subjects with no known history of diabetes, those classified as having diabetes according to the ADA FPG criterion alone had higher HbA1c and fructosamine levels than diabetic subjects defined by the WHO criteria. Of the 228 subjects for whom two FPG measurements were available, those who had consistent definitions (diabetes, impaired fasting glucose, normal fasting glucose) on both occasions were considered to have reproducible tests, giving an overall reproducibility of 90.8% (207 of 228). CONCLUSIONS: Compared with the WHO criteria, the use of FPG to diagnose diabetes, as recommended by the ADA, was a more reproducible test and identified those subjects who had a greater degree of hyperglycemia. Although lowering of the cutoff value from 7.8 to 7.0 mmol/l increased the number of diagnoses among subjects with low FPG, the omission of the 2-h PG would lead to fewer subjects having their diabetes diagnosed.     

Haemophilia and HIV infection in Hong Kong

This is a retrospective study of the problems faced and support received by HIV (human immunodeficiency virus) infected haemophilia patients in Hong Kong. Between December 1984 and December 1994, 63 patients were detected to be HIV positive, out of a total of 231 haemophiliacs screened. Infection could be traced back to before August 1985, when safer heat-treated clotting factors were not yet available. Psychosocial impacts were obvious in this group of patients because of the double blow of HIV infection and haemophilia. Amongst the more evident problems were obstacles in schooling, employment difficulties, and disturbed relationships with family and friends, to mention a few. Psychosocial support services have been rendered by both the government and non-governmental organizations in Hong Kong. Financial assistance has also been given by the government since April 1993. To date, only eleven (17.5%) patients were known to have progressed to AIDS. Medical treatment, psychosocial support and financial assistance are integral components of an effective AIDS care programme for HIV-infected haemophilia patients.     

Culture and psychology in Hong Kong.

Comments on a discussion of clinical psychology in Hong Kong by D. Ho (see record 1986-15498-001). It is argued that Ho's otherwise admirable article is marred by the misidentification of Maslow and Rogers as "modern prophets of individualism," as both would have accepted Ho's synthesis of Western individualism and Chinese collectivism. (2 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Concessionaire Selection for Build-Operate-Transfer Tunnel Projects in Hong Kong

A significant realignment of risks between project participants is a fundamental facet of the new procurement paradigm of BOT (build-operate-transfer). A BOT concessionaire assumes far more and deeper risks than a contractor. One critical contributor to the success of a BOT project is the selection of an appropriate concessionaire who has the necessary capacity to provide the best overall deal throughout the build-operate-transfer process. However, various BOT-type procurement protocols are not yet proven and are still being tried and tested. Many countries are at the lower ends of their learning curves. Therefore, there is a need to benchmark the best practices that have been emerging. The Hong Kong government has developed a well-structured concessionaire selection framework supported by the Kepner-Tregoe decision analysis technique. This paper analyzes and draws experiences and lessons from this concessionaire selection practice. Current concessionaire selection practices worldwide are also discussed with a view to improve the procurement process of regions lacking in such experiences or expertise.     

Eutrophication Model for a Coastal Bay in Hong Kong

Flow and transport in a natural water body commonly interact with density stratification and in some cases the stratification may be characterized as a two-layered system. A rigorous, two-layered, two-dimensional (2D) finite difference numerical model for eutrophication dynamics in coastal waters, based on the numerically generated, boundary-fitted, orthogonal curvilinear grid system as well as a grid “block” technique, is proposed here. The model simulates the transport and transformation of up to nine water quality constituents associated with eutrophication. The structure of the model is based on a generally accepted framework with the exception of the interaction between the two layers via vertical advection and turbulent diffusion. Some kinetic coefficients are calibrated with field data specifically for the scenario in Tolo Harbour, Hong Kong. The pollution sources are unsteady and hourly solar radiation is imposed. Sediment oxygen demand (SOD) and nutrient releases from sediment are incorporated in the model based on the relevant in-situ sampling analysis. The hydrodynamic variables are predicted simultaneously with a hydrodynamic model previously developed. The computed results show that the present model successfully reproduces the stratification tendency in all the water quality constituents, showing an obvious bottom water anoxic condition during the summer, which is consistent with the density stratification and the unsteady layer-averaged 2D eutrophication processes in Tolo Harbour.     

The significance of haemochromatosis gene mutations in the general population: implications for screening

BACKGROUND: Haemochromatosis is associated with mutations in the HFE gene but the significance of these mutations in the general population is unknown. AIMS: To determine the frequency of HFE gene mutations in the general population, their effect on serum iron indexes, and their role in screening for haemochromatosis. METHODS: Deoxyribonucleic acid (DNA) from 1064 randomly selected subjects was analysed for the C282Y and H63D mutations in the HFE gene. Serum iron, transferrin saturation, and ferritin were measured and individuals with increased iron indexes were investigated to confirm or exclude a clinical diagnosis of haemochromatosis. RESULTS: Mutations were identified in 409 individuals (38.4%) with heterozygote (carrier) frequencies of 13.2% and 24.3% for the C282Y and H63D mutations respectively. Heterozygosity for either mutation significantly increased serum iron and transferrin saturation but despite a similar trend for ferritin, this was only significant for C282Y homozygotes. Five individuals (0.47%) were homozygous for the C282Y mutation, three of whom had haemochromatosis confirmed by liver biopsy (0.28%). The other two C282Y homozygotes would not have been detected by phenotypic screening alone. CONCLUSIONS: HFE mutations are present in 38.4% of the population, affect serum iron indexes, and are important determinants of iron status. The population frequency of genetically defined haemochromatosis (C282Y homozygosity) is approximately one in 200 and is higher than the prevalence of clinically apparent haemochromatosis.     

Knowledge of stroke in Hong Kong Chinese

Cervical ribs were observed in six hydropic fetuses with 45X karyotype. To test the usefulness of this observation in the macerated hydropic fetus where chromosome culture is problematic, a group of 36 hydropic fetuses was examined. Cases were chosen to include fetuses with several karyotypic and pathological abnormalities known to be associated with fetal hydrops. Whole-body anteroposterior radiographs were evaluated without knowledge of the fetal karyotype or pathological findings. Twenty-five fetuses had an abnormal karyotype, seven had a normal karyotype and in four culture failed. In the last group, the number of X, 21 and 18 chromosomes per nucleus was estimated using FISH. Radiographic analysis demonstrated that among the 16 fetuses with 45,X karyotype or a single copy of X and female phenotype, 12 had a pair of cervical ribs. Three other fetuses had a single cervical rib. Only one fetus had no cervical ribs. The last fetus had tubular hypoplasia of the aortic arch and persistent mesocolon. Twelve of the sixteen 45,X fetuses had tubular hypoplasia of the aortic arch. Seven had other cardiovascular anomalies, five had renal anomalies, and five had anomalies of intestinal rotation. Cervical rib appears to be more common than other frequently recorded associations of 45,X. It is a useful and easily demonstrated mark in the evaluation of the macerated hydropic fetus.     

港台家校合作经验对内地的启发意义

教育部等部委联合颁布一系列法律,大力倡导组织家长委员会和开展家庭教育.我国也应借鉴港台经验,完善家长委员会,促进其良性发展.     

Arterial reconstruction for lower limb ischaemia in Hong Kong Chinese

A systematic analysis, including retrospective test by means of correlation analysis and extrapolation test was carried out to demonstrate a new hypothesis named Z-D phenomenon which states that the skew of a seasonal case distribution curve of an infectious disease may appear to be the omen of its epidemic trend in the following year. A total number of 353 data sets belong to 17 notifiable infectious diseases in 29 provinces and the whole nation were chosen. Data from retrospective test showed that 91.2% (322/353) of the correlation coefficients of between the skew of the seasonal distribution curve of the previous year and the morbidity variation of its following year were negative. The extrapolation test showed that 68.1% (203/295) of the data sets accorded with the actually epidemic situation at the level of r < -0.5. The results proved the existence of Z-D phenomenon may serve as an indicator for the purpose of forecasting. Using this systematic analysis, we found that Z-D phenomenon was more expressive in viral hepatitis, pertussis, epidemic cerebrospinal meningitis and scarlet fever than in other diseases.     

Field Studies of Well-Instrumented Barrette in Hong Kong

A large excavated rectangular pile (barrette) with lateral earth pressure and pore-water pressure cells was successfully constructed and tested in a sequence of marine, alluvial, and weathered granite soils. A “soft” base formed beneath the bottom of the barrette permitted over 100 mm of vertical settlement, completely mobilizing the shaft friction at the barrette-soil interface. During the vertical load tests, an unusual and complex response of pore-water pressures and earth pressures at the barrette-soil interface was measured. During each vertical loading cycle (except the last one) and before interface slippage of the barrette occurred, excess positive pore-water pressures were recorded in all soil layers. Upon the initiation of slip at the barrette-soil interface, a sudden drop in the measured pore pressures as well as a substantial drop in lateral earth pressures generally resulted. Subsequent loading or unloading slippage events did not show the same dramatic behavior unless a period of consolidation∕recovery was allowed first. This implies that caution must be used in design of barrettes relying heavily on skin friction when shearing induces contractive soil behavior. The current test results indicated that the empirical uncorrected SPT-N value approach and the effective stress β-method were inconsistent.     

香港交通政策及其启示

香港交通运输系统的高效运转，得益于完善合理的交通政策。通过对其交通政策的详细介绍．希望可以对其他城市的交通建设提供可以借鉴的方面。     

Chinese Values and Stressors of Construction Professionals in Hong Kong

The construction industry has been recognized as a stressful industry, and a great deal of stress is placed on various construction professionals (CPs). However, due to the different “values” among CPs in Hong Kong, susceptibility to stressors varies from individual to individual. People who grow up and live in different cultural environments have different values and this leads to different perceptions of stressors. This study aims to investigate the impact of Chinese values on the stressors of CPs in Hong Kong, one of the main cities in China. To achieve this aim, factor analysis, Pearson correlation analysis, and structural equation modeling were applied based on the survey data collected from CPs in Hong Kong. Four types of Chinese values and eight stressors are identified. The results reveal that: (1) social conventions value alleviate role ambiguity and poor workgroup relationship; (2) value of disciplined work ethos triggers work overload, although it alleviate poor workgroup relationship and work underload; (3) value of conservative personality alleviates work overload; (4) interpersonal integration value has indirect impacts on the various stressors; and (5) the objective poor working environment stressor has significant impact on the poor workgroup relationships and role ambiguity of individual CPs.     

Construction in Hong Kong: Success Factors for ISO9000 Implementation

This paper examines the success factors for the implementation of ISO9000 in the Hong Kong construction industry. The critical factors for construction contractors to successfully implement ISO9000 were identified. An analytic hierarchy process model was then developed to determine the relative importance among those factors. The findings showed that the top management commitment is the most critical factor for the successful ISO9000 implementation, whilst the common goal, teamworking, education and training, and the cultural changes are also the important factors.