Frances F. K. Cheng

Can Health Promoting Schools contribute to the better health and wellbeing of young people? The Hong Kong experience

Background: The Health Promoting School (HPS) is a WHO sponsored framework, compiled to enable education and health sectors to be more effective in school based initiatives. Aims: This study attempted to test the hypothesis that students from schools that had comprehensively embraced the HPS concept as indicated by the Healthy School Award, were better, in terms of health risk behaviour, self reported health status, and academic results, than students from schools that did not reach the standard of the award. Methods and Results: The results presented came from nine schools (four primary and five secondary) applying for accreditation of the Healthy Schools Award after adopting the HPS framework for two years. Regular consultancy support and training were available to all schools. Students had completed before and after surveys to assess their health behaviours, self reported health status, and academic standing before the two year intervention, and at its end. Data from the before and after surveys of the students attending schools that reached certain level of HPS standard as indicated by the award, were compared with students whose schools did not receive the award, and the results showed differences. Some differences were found to be more significant among the primary school students than secondary schools students. This illustrated early intervention for lifestyle changes to be more effective. Students’ satisfaction with life also improved if their schools adopted the concept of HPS comprehensively. Conclusions: The results suggest that comprehensive implementation of HPS would contribute to differences in certain behaviours and self reported health and academic status.

Sero-epidemiology and risk factors of positive hepatitis B surface antigen amongst Chinese adolescents.

This paper reports the prevalence rate of hepatitis B antigen (HBsAg) amongst the Hong Kong Chinese adolescents (age 11 to 19), and the risk factors associated with HBsAg positive. The study is cross sectional and 1,580 students were randomly selected from 12 secondary schools in four regions of Hong Kong. For those subjects who agreed to participate and were randomly selected, their blood was tested for HBsAg and anti-HBs. The overall prevalence of HBsAg positive was reported to be 5.8% (7.9% in male and 4.1% in female), lower than 8.1% in 1978. Males, those born in Mainland China and family history of carriers had higher prevalence of HBsAg positive (7.9% vs 4.1%, 12.2% vs 4.7%, 52.9% vs 3.8% respectively) with statistical significance. Males and those born in mainland China were found to have significantly higher odds ratio 1.8 (95% CI. 0.98-3.52) and 4.4 (95% CI. 2.2-8.8) respectively of HBsAg positive by multivariate analysis. Findings suggest that family history of carriers and those born in endemic area are at a higher risk. Therefore it is worthwhile to consider vaccination programme for adolescents to reduce the carrier rate, and to also reduce the infection amongst the adults by horizontal transmission. Asia Pac J Public Health 2001;13(1): 30-35

The impact of a newly designed resilience-enhancing programme on parent- and teacher-perceived resilience environment among Health Promoting Schools in Hong Kong

Background: The Health Promoting School (HPS) approach provides a strong foundation to improve students’ overall health, including psychological well-being, which has its roots in resilience. The present study evaluates the effectiveness of a resilience-enhancing programme, building on the concept of HPS among a Chinese population. Methodology: All mainstream schools in a socially disadvantaged region of Hong Kong were eligible, and stratified random sampling was used to recruit both HPS as intervention schools and non-HPS as control schools. The participants included teachers and parents of grade 3 and 5 primary and grade 1 secondary school students (aged 8, 10 and 12 respectively). Validated surveys were used to assess resilience scores in both groups of schools before and after a series of resilience-enhancing activities in HPS, and ANOVA was used to compare the score changes between the two groups. Results: Five primary and four secondary HPS and four primary and four secondary non-HPS were recruited, involving 4918 parents and 602 teachers. Among primary and secondary parents, the HPS group did not report a higher score than the non-HPS group. Among secondary teachers, the HPS group showed significantly higher scores than the non-HPS group (p  =  0.023 to < 0.001) Conclusion: The present study is the first to demonstrate the positive synergistic effect of a newly designed resilience-enhancing intervention programme, building on the concept of HPS in schools among secondary teachers in Hong Kong. It was suggested that future initiatives may involve parent networking and school–family collaboration in fostering an even more resilient school environment.

Should adolescents be vaccinated against hepatitis A: the Hong Kong experience.

Hong Kong is a well developed city in the center of an endemic region for hepatitis A. The age at which hepatitis A occurs has shifted from childhood and adolescence to adults like many western countries. There is a high chance of outbreaks with the introduction of infection from neighbouring countries. Reducing the susceptibility of a population by vaccination can eliminate the diseases but updated sero-epidemiological data is needed to analyse the level of natural immunity, and identify those susceptible to infection for preventive measures. This study conducted amongst secondary school children seeks to identify those who are at risk and to obtain data on the present sero-prevalence of anti-HAV. Overall prevalence of anti-HAV in this age group was 7% increasing with age. Analysed by multiple regression model, those students living in mainland China over 3 years had odds ratio of 31.6 (95% c. i. 17.4-57.3) compared with those born in Hong Kong. Students with a father in a skilled occupation and an education level of secondary school or above, and both parents with secondary education or above, had an odds ratio of 0.22 (95% c.i. 0.07-0.7) and 0.35 (95% c.i. 0. 17-0.72) associated with presence of anti-HAV, respectively. Improved socio-economic state exposes higher proportion of the population at risk. Immunisation is worthwhile to be considered for the adolescents in Hong Kong. Prevaccination screening is cost effective only for those adolescents who are most likely to have natural immunity.

How would schools step up public health measures to control spread of SARS

The severe acute respiratory syndrome (SARS) is a rapidly progressive, and sometime fatal disease with more than 1800 patients in over a dozen countries in Asia, Europe, and North America (including the United States and Canada) within two months. On 12 March 2003, the World Health Organisation (WHO) issued a global alert about SARS so it became a global challenge. Strengthening the public health measures at schools would protect children as well as providing the students an opportunity to learn about infectious disease control through life event approach. The public health measures at schools include two important components: basic understanding of the disease so schools would put on high alert on caution cases, and the measures to improve environmental hygiene at schools and preventive measures to stop infectious disease transmission. This will help to empower the whole community the readiness to deal with other outbreaks in the future.