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Eosinophilic meningitis beyond the Pacific Basin: the global dispersal of a peridomestic zoonosis caused by Angiostrongylus cantonensis, the nematode lungworm of rats

Kliks MM, Palumbo NE

Soc Sci Med, 1992 Jan;34(2):199-212.
PMID: 1738873 DOI: 10.1016/0277-9536(92)90097-A

The principal etiologic agent of human eosinophilic meningitis, Angiostrongylus cantonensis, was first detected in rats in Canton, China in 1933. The first human case was detected on Taiwan in 1944. Epidemic outbreaks were noted on Ponape (E. Caroline Is.) from 1944 to 1948. The disease may present as transient meningitis or a more severe disease involving the brain, spinal cord and nerve roots, with a characteristic eosinophilia of the peripheral blood and CSF. Since 1961 it has been known that human infections are usually acquired by purposeful or accidental ingestion of infective larvae in terrestrial mollusks, planaria and fresh-water crustacea. There is no effective specific treatment. The African land snail, Achatina fulica played an important role in the panpacific dispersal of the organism: it will be important in Africa in the future as well. Rats were, and will continue to be the principal agents of expansion of the parasite beyond the Indopacific area. During and just after WWII the parasite was introduced, and/or spread passively from South and Southeast Asia into the Western Pacific islands and eastward and southward through Micronesia, Melanesia, Australia and into Polynesia, sequestered in shipments of war material and facilitated by post-war commerce. In the 1950s numerous cases were identified for the first time on Sumatra, the Philippines, Taiwan, Saipan, New Caledonia, and as far east as Rarotonga and Tahiti. Then cases were detected in Vietnam, Thailand, Cambodia, Java, Sarawak, the New Hebrides, Guam and Hawaii during the 1960s. Subsequently in the Pacific Basin the disease has appeared on Okinawa, other Ryukyu islands, Honshu, Kyushu, New Britain, American Samoa and Western Samoa, Australia, Hong Kong, Bombay, India, Fiji and most recently in mainland China. The parasite in rats now occurs throughout the Indopacific Basin and littoral. Beyond the Indopacific region, the worm has been found in rodents in Madagascar (ca 1963), Cuba (1973), Egypt (1977), Puerto Rico (1984), New Orleans, Louisiana (1985) and Port Harcourt, Nigeria (1989). Human infections have now been detected in Cuba (1973), Réunion Island (1974) and Côte d'Ivoire (1979) and should be anticipated wherever infected rats of mollusks have been introduced. Caged primates became infected in zoos in Hong Kong (1978) and New Orleans and Nassau, Bahamas (1987). The use of mollusks and crustacea as famine foods, favored delicacies and medicines has resulted in numerous outbreaks and isolated infections. Economic and political instability, illicit trade, unsanitary peridomestic conditions and lack of health education promote the local occurrence and insidious global expansion of parasitic eosinophilic meningitis.(ABSTRACT TRUNCATED AT 400 WORDS)
Ethics of care and selective organisational caregiving by private employers for employees with chronic illness in a middle-income country

Vijayasingham L, Jogulu U, Allotey P

Soc Sci Med, 2021 01;269:113608.
PMID: 33360218 DOI: 10.1016/j.socscimed.2020.113608

For people with chronic illnesses in low-and-middle-income countries, access to enabling resources that contribute to health, economic and social resilience such as continued employment, often fall outside the health sector's remit or delivery of national structural protection. In the absence of sufficient laws and policies that mitigate discrimination and enhance reasonable work modifications, private employers have a high degree of agency and discretion in how they hire, manage, or terminate employees with chronic illnesses (ECI). There is a scarcity of research on how employers make decisions under these conditions. Using a constructivist grounded theory approach, we interviewed and analysed data from 30 human resource (HR) professionals and decision-makers within private organisations in Klang Valley, Malaysia (June 2015-September 2016). In this paper, we use 'ethics of care' as an analytic, and moral lens to present HR's decision-making rationales in caring for and managing ECI. Respondents described the positive influence of international practices, including through parent company policies, as a reference for best practice. While overt bias and discriminatory perceptions were predictably described, participants also discussed care as relational organisational culture, and strategy, albeit selectively. Apart from illness factors such as duration and severity, descriptions of 'selective caregiving' included considerations of an employee's duration in organisations, the perceived value of the employee to employers, organisation size, ethos, resources and capabilities, and how organisations managed the uncertainty of illness futures as a potential risk to organisation outcomes. Selective caregiving can contribute to social, economic and health inequalities in populations with chronic illness. Nevertheless, global health actors can use the problems identified by participants, as entry points to engage more closely with employers and the broader private and commercial sectors in LMICs, to facilitate more inclusive care, and care-based intersectoral work to address the social and economic determinants of health.
Food ideology and eating behavior: contributions from Malay studies

Laderman C

Soc Sci Med, 1984;19(5):547-59.
PMID: 6484640 DOI: 10.1016/0277-9536(84)90050-9

A study of food ideology and eating behavior in a Malay village demonstrates that the relationship between belief and action is complex and not always predictable. Over-reliance upon stated beliefs, and generalizations derived from particular ecological settings, have influenced investigators into making universal and logical statements about Malay eating behavior and its health consequences--a logic which, however, does not always jibe with reality. Food ideology, like any other portion of a belief system, is subject to innovation, interpretation and rationalization, and contains within it 'rules to break rules' which assure the continued integrity of the symbolic system by patterning what might otherwise be seen as rifts in its fabric. An understanding of eating behavior must be based both on a knowledge of the subsidiary, as well as primary, clauses of food ideology, and on direct observation of the behaviors elicited by these beliefs and modified by the setting, the situation and the individual.
Fulltext Handwashing adherence during the COVID-19 pandemic: A longitudinal study based on protection motivation theory

Szczuka Z, Siwa M, Abraham C, Baban A, Brooks S, Cipolletta S, et al.

Soc Sci Med, 2023 Jan;317:115569.
PMID: 36436259 DOI: 10.1016/j.socscimed.2022.115569

RATIONALE: The associations between the number of COVID-19 cases/deaths and subsequent uptake of protective behaviors may reflect cognitive and behavioral responses to threat-relevant information.
OBJECTIVE: Applying protection motivation theory (PMT), this study explored whether the number of total COVID-19 cases/deaths and general anxiety were associated with cross-situational handwashing adherence and whether these associations were mediated by PMT-specific self-regulatory cognitions (threat appraisal: perceived vulnerability, perceived illness severity; coping appraisal: self-efficacy, response efficacy, response costs).
METHOD: The study (#NCT04367337) was conducted in March-September 2020 among 1256 adults residing in 14 countries. Self-reports on baseline general anxiety levels, handwashing adherence across 12 situations, and PMT-related constructs were collected using an online survey at two points in time, four weeks apart. Values of COVID-19 cases and deaths were retrieved twice for each country (one week prior to the individual data collection).
RESULTS: Across countries and time, levels of adherence to handwashing guidelines were high. Path analysis indicated that smaller numbers of COVID-19 cases/deaths (Time 0; T0) were related to stronger self-efficacy (T1), which in turn was associated with higher handwashing adherence (T3). Lower general anxiety (T1) was related to better adherence (T3), with this effect mediated by higher response efficacy (T1, T3) and lower response cost (T3). However, higher general anxiety (T1) was related to better adherence via higher illness severity (T1, T3). General anxiety was unrelated to COVID-19 indicators.
CONCLUSIONS: We found a complex pattern of associations between the numbers of COVID-19 cases/deaths, general anxiety, PMT variables, and handwashing adherence at the early stages of the pandemic. Higher general anxiety may enable threat appraisal (perceived illness severity), but it may hinder coping appraisal (response efficacy and response costs). The indicators of the trajectory of the pandemic (i.e., the smaller number of COVID-19 cases) may be indirectly associated with higher handwashing adherence via stronger self-efficacy.
Fulltext Health poverty among people with type 2 diabetes mellitus (T2DM) in Malaysia

Parra-Mujica F, Roope LS, Abdul-Aziz A, Mustapha F, Ng CW, Rampal S, et al.

Soc Sci Med, 2024 Jan;340:116426.
PMID: 38016309 DOI: 10.1016/j.socscimed.2023.116426

In the context of the escalating burden of diabetes in low and middle-income countries (LMICs), there is a pressing concern about the widening disparities in care and outcomes across socioeconomic groups. This paper estimates health poverty measures among individuals with type 2 diabetes mellitus (T2DM) in Malaysia. Using data from the National Diabetes Registry between 2009 and 2018, the study linked 932,855 people with T2DM aged 40-75 to death records. Cox proportional hazards models were used to estimate the 5-year survival probabilities for each patient, stratified by age and sex, while controlling for comorbidities and area-based indicators of socio-economic status (SES), such as district-level asset-based indices and night-time luminosity. Measures of health poverty, based on the Foster-Greer-Thorbecke (FGT) measures, were employed to capture excessive risk of premature mortality. Two poverty line thresholds were used, namely a 5% and 10% reduction in survival probability compared to age and sex-adjusted survival probability of the general population. Counterfactual simulations estimated the extent to which comorbidities contribute to health poverty. 43.5% of the sample experienced health poverty using the 5% threshold, and 8.9% were health poor using the 10% threshold. Comorbidities contribute 2.9% for males and 5.4% for females, at the 5% threshold. At the 10% threshold, they contribute 7.4% for males and 3.4% for females. If all patients lived in areas of highest night-light intensity, poverty would fall by 5.8% for males and 4.6% for females at the 5% threshold, and 4.1% for males and 0.8% for females at the 10% threshold. In Malaysia, there is a high incidence of health poverty among people with diabetes, and it is strongly associated with comorbidities and area-based measures of SES. Expanding the application of health poverty measurement, through a combination of clinical registries and open spatial data, can facilitate simulations for health poverty alleviation.
Historical review of the changing pattern of infant feeding in developing countries: the case of Malaysia, the Caribbean, Nigeria and Zaire

King J, Ashworth A

Soc Sci Med, 1987;25(12):1307-20.
PMID: 3324358 DOI: 10.1016/0277-9536(87)90129-8

Prolonged lactation and early supplementation have been traditional practices among low-income mothers in Malaysia, the Caribbean, Nigeria and Zaire. Early supplementation is still the norm but there have been some substantial changes in the types of supplement offered. Thus, except in Zaire, there is now widespread use of processed milks as supplements for very young infants. The use of processed milks began in the 1920s in Malaysia and the Caribbean, but not until the 1960s in Nigeria. Processed milks are, as yet, rarely used in Zaire. The use of processed milks has not, however, led to the abandonment of traditional paps. The latter are still given as supplements to young infants in Nigeria and to older infants in Malaysia and the Caribbean. Breast-feeding duration has declined in Malaysia and the Caribbean although initiation is almost universal. In Nigeria and Zaire most low-income mothers continue to breast-feed for at least 12 months. The changes in the types of supplements used and in breast-feeding duration are analogous to the changes observed in industrialised countries from the mid-19th century, and many of the associated factors are similar: urbanisation; female participation in the labour force; increased availability of processed milks and their promotion both by companies and the health sector; and the regimentation of breast-feeding. This review highlights the negative role played by the health sector in the past, and discusses its future role in promoting and supporting breast-feeding.
Hot and cold in transformation: is Iban medicine humoral?

Barrett RJ, Lucas RH

Soc Sci Med, 1994 Jan;38(2):383-93.
PMID: 8140465

Iban categories of hot and cold are examined in the context of humoral medical systems in southeast Asia. These categories are more than binary and oppositional: they are also contradictory and can only be understood in terms of their capacity for transformation in 'depth'. Analysis of the Iban epistemology of temperature sensation reveals the limitations of reductionist empirical approaches to hot and cold. Illness is apprehended, at one level, in terms of unusual conjunctions of opposite temperatures which signify a deeper disturbance in the relationship between body and soul, humans and spirits. Iban therapy redefines and relocates these categories in their proper place and at their appropriate level. It progresses from hot lay treatments to cool ritual treatments, yet cannot be accounted for within a limited framework of homeostatic balance. This paper develops an ethnographically grounded definition of humoralism which emphasizes non-reductive logic, cultural practice and transformation. The key element, transformation, is defined as a transition between categories and a shift in the level of interpretation which fundamentally alter the Iban experience of body and illness.
Longhouse dwelling, social contact and the prevalence of leprosy and tuberculosis among native tribes of Sarawak

Chen PCY

Soc Sci Med, 1988;26(10):1073-7.
PMID: 3393924 DOI: 10.1016/0277-9536(88)90225-0

In Sarawak, some tribes stay in communal longhouses whilst others live in villages of single dwellings. The present study looks into the question of whether there is an association between the prevalence of leprosy and tuberculosis with the quantum of social contact that occurs in these two types of settlement patterns. It was found that the prevalence of leprosy and tuberculosis is significantly higher among longhouse dwellers compared with single house dwellers. It was also noted that social groups tended to be larger and to persist for much longer among longhouse dwellers than among those in single dwellings. This lends support to the evidence that social contact in longhouses is more extensive and contributes towards a higher prevalence of leprosy and tuberculosis.
Malay midwives and witches

Karim WJ

Soc Sci Med, 1984;18(2):159-66.
PMID: 6701560

This paper attempts to analyse professional rivalry and dissonance amongst traditional Malay midwives (bidan kampung) in the Northwest areas of Peninsular Malaysia. It elucidates how techniques of symbolic and ritual communication are carefully monitored by these female specialists, to develop regular clientele and professional credibility over time. However, since an integral element of Malay midwifery is protection from and mastery over mystical forces in nature and evil spirits harboured by witches, a midwife is also an exorcist with skills rather similar to the Malay bomoh (traditional medical practitioner, usually male) except that her range of knowledge of witchcraft is limited to diagnostic and curative rituals of spirit-possession, in infants and children, young unmarried women and pregnant mothers. Within a restricted population area, professional rivalries and competition amongst midwives regularly surface in oblique attacks of witchcraft accusations where the accused strives to maintain her credibility while her accuser gradually wins over her clientele. Significantly, codes of professionalism in traditional Malay midwifery are not only determined by skill and experience, but also religiousness (faith in Islam), benevolence, virtue, diligence and a sense of equality and fair-play in the practice of the trade. These qualities are seemingly lacking in witches who are conceived to be anti-Islamic, uncompromising, manevolent and destructive. Thus, government midwives who threaten the popularity of traditional midwives by being particularly active in their work or supervising and controlling midwives in an authoritarian way, are also labelled as witches. Generally, while midwifery and witchcraft reflect two forms of knowledge that are structurally opposed, in ideology and morality, they exist within the same sphere of ritual and symbolic communication where the practitioners aided by their clients, shift from one state of dissonance to another in an attempt to regulate behaviour.
Offspring's labor migration and its implications for elderly parents' emotional wellbeing in Indonesia

Kumar S

Soc Sci Med, 2021 05;276:113832.
PMID: 33784552 DOI: 10.1016/j.socscimed.2021.113832

Population ageing and labor out-migration are increasingly challenging normative intergenerational support systems and familial welfare in parts of Asia. Extant studies look at how migration affects the material wellbeing of sending-households, but less is known about how migration shapes the emotional health of non-migrants as origin and destination conditions evolve. This study examines how labor migration among adult children shape the emotional health of elderly parents in Indonesia, and how observed implications are modified by alternative care arrangements and different migrant destinations. Using panel data from 2101 respondents age 50+ in the 2007 and 2014 Indonesia Family Life Survey, and individual-level fixed effects regressions, this study finds that offspring's migration is associated with increased parental depression, net of covariates. Depressive outcomes are abated if resulting care deficits are offset by co-residence or daily interactions with adult children, or if children move to economically lucrative international destinations; however, having a child in Malaysia - a destination characterized by high informal labor employment - increased parental depression. These findings draw attention to the non-economic implications of migration and the distress experienced specifically by parents who lack intergenerational support and who have concerns about child's wellbeing at destination.
Ownership, control, and contention: challenges for the future of healthcare in Malaysia

Chee HL

Soc Sci Med, 2008 May;66(10):2145-56.
PMID: 18329149 DOI: 10.1016/j.socscimed.2008.01.036

The recent history of healthcare privatisation and corporatisation in Malaysia, an upper middle-income developing country, highlights the complicit role of the state in the rise of corporate healthcare. Following upon the country's privatisation policy in the 1980s, private capital made significant inroads into the healthcare provider sector. This paper explores the various ownership interests in healthcare provision: statist capital, rentier capital, and transnational capital, as well as the contending social and political forces that lie behind state interests in the privatisation of healthcare, the growing prominence of transnational activities in healthcare, and the regional integration of capital in the healthcare provider industry. Civil society organizations provide a small but important countervailing force in the contention over the future of healthcare in the country. It is envisaged that the healthcare financing system will move towards a social insurance model, in which the state has an important regulating role. The important question, therefore, is whether the Malaysian government, with its vested interests, will have the capacity and the will to play this role in a social insurance system. The issues of ownership and control have important implications for governance more generally in a future healthcare system.
Perceptions of an 'international hospital' in Thailand by medical travel patients: cross-cultural tensions in a transnational space

Whittaker A, Chee HL

Soc Sci Med, 2015 Jan;124:290-7.
PMID: 25308233 DOI: 10.1016/j.socscimed.2014.10.002

The growing trade in patients seeking health care in other countries, or medical travel, is changing the forms and experiences of health care seeking and producing changes to hospitals in terms of their design, organization and spaces. What is termed in marketing parlance in Thailand as an 'international hospital' oriented to attracting foreign patients, is a hotel-hospital hybrid that is locally produced through the inflexion of local practices to make a therapeutic space for international patients. The paper reports on work undertaken within a Thai hospital in 2012 which included observations and interviews with thirty foreign in-patients and nine informal interviews with hospital staff. Although theorized as a culturally neutral transnational 'space of connectivity', we show how cross-cultural tensions affect the experience of the hospital with implications for the organization of the hospital and notions of 'cultural competence' in care. There is no single universal experience of this space, instead, there are multiple experiences of the 'international hospital', depending on who patients are, where they are from, their expectations and relationships. Such hospitals straddle the expectations of both local patients and international clientele and present highly complex cross-cultural interactions between staff and patients but also between patients and other patients. Spatial organisation within such settings may either highlight cultural difference or help create culturally safe spaces.
Predicting intention to participate in self-management behaviors in patients with Familial Hypercholesterolemia: A cross-national study

Hagger MS, Hamilton K, Hardcastle SJ, Hu M, Kwok S, Lin J, et al.

Soc Sci Med, 2019 12;242:112591.
PMID: 31630009 DOI: 10.1016/j.socscimed.2019.112591

RATIONALE: Familial Hypercholesterolemia (FH) is a genetic condition that predisposes patients to substantially increased risk of early-onset atherosclerotic cardiovascular disease. FH risks can be minimized through regular participation in three self-management. BEHAVIORS: physical activity, healthy eating, and taking cholesterol lowering medication.
OBJECTIVE: The present study tested the effectiveness of an integrated social cognition model in predicting intention to participate in the self-management behaviors in FH patients from seven countries.
METHOD: Consecutive patients in FH clinics from Australia, Hong Kong, Brazil, Malaysia, Taiwan, China, and UK (total N = 726) completed measures of social cognitive beliefs about illness from the common sense model of self-regulation, beliefs about behaviors from the theory of planned behavior, and past behavior for the three self-management behaviors.
RESULTS: Structural equation models indicated that beliefs about behaviors from the theory of planned behavior, namely, attitudes, subjective norms, and perceived behavioral control, were consistent predictors of intention across samples and behaviors. By comparison, effects of beliefs about illness from the common sense model were smaller and trivial in size. Beliefs partially mediated past behavior effects on intention, although indirect effects of past behavior on intention were larger for physical activity relative to taking medication and healthy eating. Model constructs did not fully account for past behavior effects on intentions. Variability in the strength of the beliefs about behaviors was observed across samples and behaviors.
CONCLUSION: Current findings outline the importance of beliefs about behaviors as predictors of FH self-management behaviors. Variability in the relative contribution of the beliefs across samples and behaviors highlights the imperative of identifying sample- and behavior-specific correlates of FH self-management behaviors.
Private medical practitioners and managed care in Malaysia: a survey of knowledge and attitudes held by Federal Territory based doctors

Marnoch G, Lian PC

Soc Sci Med, 2002 Mar;54(6):869-77.
PMID: 11996021

This paper considers the subject of managed care in Malaysia, providing a questionnaire-based analysis of the position adopted by private medical practitioners. Managed care is now seen as the dominant health care system in the United States, with many other countries around the world including Malaysia beginning to selectively use component parts to tackle particular health care problems. In this survey it was found that three out of four respondents have concerns regarding the implementation of managed care. The survey was used to identify and categorise these concerns. At the same time, three out of four respondents held the opinion that principles of managed care were already a reality or would be in the next 5 years. This group expressed an eagerness to be trained in managed care principles and be given the opportunity to be part of managed care organisations. It is argued that clinicians' knowledge and interest perceptions are an important influence on the implementation of managed care based systems. The survey-based evidence presented in this article is intended as a measure of current understandings and beliefs, in relation to clinical micro-management process associated with managed care.
Problems and potential of researching epidemiological transition: examples from Southeast Asia

Phillips DR

Soc Sci Med, 1991;33(4):395-404.
PMID: 1948152

The concept of epidemiological transition is now quite widely recognized, if not so widely accepted. The transition appears to progress at varying speeds and to different extents spatially; it seems that there can be considerable international, regional and local variations in its progress. The paper examines this contention in the case of a number of countries in Southeast Asia, principally Hong Kong, Malaysia and Thailand. Drawing on evidence from this region, the paper highlights the importance when researching epidemiological transition of the time period under consideration; socio-cultural variations; the nature and quality of data, and spatial scale. It makes some suggestions as to the potential of the concept of epidemiological transition in health care planning and development studies.
Public health care provisions: access and equity

Bin Juni MH

Soc Sci Med, 1996 Sep;43(5):759-68.
PMID: 8870140

Within the current exercise of reforming the health care system, underlying all issues, is the reassessment of the role of government. It is a government's responsibility and concern that the health sector be accessible and equitable to the population, and more important that the health sector be more efficient and affordable. Many governments in the world attempt to provide universal health care services to their population through public health care provisions. This paper reviews and analyses the experience of the Malaysian health system, focusing on the performance of the system in relation to access and equity. The performance of the Malaysian health system has been impressive. At minimum cost it has achieved virtually accessible and equitable health care to the entire population. This is evident by analysing almost all the commonly used indicators. These clearly show that when matched to comparable countries, health outcome is even better than predicted value.
Re-interpreting the citizen consumer: alternative consumer activism and the rights to health and development

Khoo SM

Soc Sci Med, 2012 Jan;74(1):14-9.
PMID: 21570757 DOI: 10.1016/j.socscimed.2011.02.048

Alternative Southern consumer activism, undertaken for example by the Consumers' Association of Penang (CAP) in Malaysia, presents significant sites of nodal governance through which local and global health rights are claimed. This alternative consumer approach distinctively integrates health with development, social justice and environmental issues. It has not always explicitly employed rights language, but consumer activism fits with rights-based approaches, emphasising entitlements, accountability and participation. This case-study traces the development of networked consumer campaigns to contest and shape global health governance. It highlights the important, yet under-researched role of Southern nodes within global networks mobilizing health rights and public health. Alternative consumer activism re-interprets the consumer as a countervailing force, collectively mobilizing citizens to claim their health rights.
Regional inequalities of child mortality in peninsular Malaysia with special reference to the differentials between Perlis and Kuala Terengganu

Brehm U

Soc Sci Med, 1993 May;36(10):1331-4.
PMID: 8511619

In Peninsular Malaysia child mortality rates (5q0) vary from 13 to 63 per thousand at district level. The spatial pattern is closely associated with the regional distribution of socio-economic factors. But due to multicollinearity it is difficult to isolate the influence of socio-economic variables from other variables by employing aggregated data. However, individual data collected in a case-control-study that was conducted in Perlis and Kuala Terengganu confirm the important role of socio-economic factors. So it should be possible to achieve a further reduction of child mortality by raising the income and educational level of the under-privileged groups. Apart from that, as the case of Perlis shows, the provision of family planning and preventive medical services may also contribute to lower child mortality independent from socio-economic changes. But, as the comparison with Kuala Terengganu shows, the utilization of family planning and preventive medical services is not only influenced by the accessibility to, but also by the socio-culturally determined acceptability of such services.
Relationship between water quality and human health: a case study of the Linggi River Basin in Malaysia

Lonergan S, Vansickle T

Soc Sci Med, 1991;33(8):937-46.
PMID: 1745918

Due to the increasingly documented prevalence of diarrhoeal diseases in Malaysia, a number of water-related programmes have been implemented in an attempt to improve health status through the reduction of incidence of waterborne communicable diseases associated with poor public water supplies. The implicit assumption underlying these projects is that the enhancement of the physical infrastructure, and subsequent improvements in the quality of the water supply, will substantially reduce water-related disease. The present study questions this hypothesis and uses a socio-ecological model as a framework to assess risk factors associated with the increased probability of waterborne disease. Research is centred on Port Dickson, a district which typifies existing water and sanitation conditions in much of semi-rural Malaysia. Health services utilization data and a 268-household diarrhoeal morbidity survey were used to measure the burden of illness of waterborne disease within the district and to identify predictors of morbidity. It was concluded that although treatment facilities will reduce the health burden in the region, a number of behavioural and sanitation factors may be more important and could act to minimize the potential impacts of improved water quality.
Salted fish and nasopharyngeal carcinoma in Malaysia

Armstrong RW, Eng AC

Soc Sci Med, 1983;17(20):1559-67.
PMID: 6635717 DOI: 10.1016/0277-9536(83)90100-4

The evidence for a hypothesis that eating salted fish is associated with nasopharyngeal carcinoma (NPC) is reviewed. The hypothesis was tested among Malaysian Chinese using a matched case-control design. The kinds of salted fish and patterns of use were also investigated in a control group comprising 100 Chinese, 50 Malay and 50 Indian households. During 1980, in Selangor, Malaysia, interviews with 100 Chinese cases of NPC and 100 non-disease controls indicated that salted fish consumption during childhood was a significant risk (relative risk = 3.0, P = 0.04), with an elevated risk for daily as opposed to less frequent consumption. Salted fish consumption during adolescence was a less significant risk, and current consumption not at all. There were 19 kinds of fishes reported as being eaten as salted fish by the 200 control households. There were marked differences between ethnic groups in preference for different kinds: Chinese preferred red snapper (74% of households), Malay jewfish (54%) and Indian red snapper (28%). Salted fish was hardly ever eaten daily by any household; weekly was a moderate frequency in all ethnic groups; less than weekly most common. There were no statistically significant differences between Chinese NPC case and non-disease control participants in kind of salted fish eaten. Results were the same when the data were analyzed by sex, subethnic group and income.

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