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The effect of cassava leave intake on thyroid hormone and urinary iodine

Osman BA, Ng ML, Bakar AA, Khalid BA

East Afr Med J, 1993 May;70(5):314-5.
PMID: 8306912

The effect of consuming large amounts of cassava leaves on thyroid function and urinary iodine was studied. Twenty volunteers were given 200 gm of boiled cassava leaves twice a day for 12 consecutive days. Thyroid hormones triiodothyronine and thyroxine were significantly lower by 9 days. Urinary iodine excretion was also significantly decreased. Cassava leaves, consumed in large amounts by aborigines, probably caused goitres by decreasing iodine absorption.

Matched MeSH terms: Risk Factors
Fulltext Vitamins, selenium, iron, and coronary heart disease risk in Indians, Malays, and Chinese in Singapore

Hughes K, Ong CN

J Epidemiol Community Health, 1998 Mar;52(3):181-5.
PMID: 9616423

STUDY OBJECTIVE: To examine the hypothesis that the higher rates of coronary heart disease (CHD) in Indians (South Asians) compared with Malays and Chinese is partly because of differences in antioxidants (vitamins A, C, and E, and selenium) and pro-oxidants (iron).
DESIGN: Cross sectional study of the general population.
SETTING: Singapore.
PARTICIPANTS: Random sample of 941 persons aged 30 to 69 years.
MAIN RESULTS: There were moderate correlations between vitamin A and vitamin E, and between these vitamins and selenium. Mean plasma vitamins A and E were similar by ethnic group. Vitamin A concentration for Indians were (men 0.66 and women 0.51 mg/l), Malays (men 0.67 and women 0.54 mg/l), and Chinese (men 0.68 and women 0.52 mg/l). Vitamin E concentrations for Indians were (men 12.9 and women 12.8 mg/l), Malays (men 13.6 and women 13.3 mg/l), and Chinese (men 12.6 and women 12.6 mg/l). In contrast, mean plasma vitamin C concentrations were lower in Indians (men 5.7 and women 6.9 mg/l) and Malays (men 5.1 and women 6.4 mg/l) than Chinese (men 6.3 and women 8.4 mg/l). Mean serum selenium was lower in Indians (men 117 and women 115 micrograms/l) than Malays (men 122 and women 122 micrograms/l) and Chinese (men 126 and women 119 micrograms/l). Mean serum ferritin was much lower in Indians (men 132 and women 50 micrograms/l) than Malays (men 175 and women 85 micrograms/l) and Chinese (men 236 and women 92 micrograms/l).
MAIN CONCLUSIONS: Lower vitamin C and selenium in Indians, particularly in combination, could play a part in their increased risk of CHD. Vitamins A and E, and ferritin (iron) have no such role. Lower vitamin C in Indians and Malays is probably because of its destruction by more prolonged cooking. In Indians, lower selenium is probably because of a lower dietary intake and the much lower ferritin to a lower dietary intake of iron and its binding by phytates.

Matched MeSH terms: Risk Factors
Risk factors for infection in Malaysian patients with systemic lupus erythematosus

Paton NI, Cheong IK, Kong NC, Segasothy M

QJM, 1996 Jul;89(7):531-8.
PMID: 8759494 DOI: 10.1093/qjmed/89.7.531

To determine the incidence, types and risk factors for infection in systemic lupus erythematosus (SLE) patients in Kuala Lumpur, Malaysia, we retrospectively reviewed the medical records of 102 patients with definite SLE attending a specialist clinic. Details of major infections (pneumonia or severe infection requiring intravenous therapy) and minor infections, and their time of onset in relation to immunosuppressive therapy and disease flares were recorded. There were 77 major and 163 minor infections during 564 patient-years of follow-up. In the month following a course of pulse methylprednisolone, the incidence of major infection was 20 times higher and the incidence of minor infection was 10 times higher than at other periods (p < 0.0001). In the month after disease flare, the incidence of major infection was 10 times higher and the incidence of minor infection six times higher than at other times (p < 0.0001). After allowing for methylprednisolone therapy and disease flares, there was no increase in the rate of infections during treatment with azathioprine, oral or intravenous cyclophosphamide. There was no effect of renal involvement on infection rate.

Matched MeSH terms: Risk Factors
HIV infection in females dependent on drugs

Wai BH, Singh S, Varma SL

Addiction, 1996 Mar;91(3):435-8.
PMID: 8867206

One hundred and seventy-one drug-dependent females in a drug rehabilitation centre were studied to estimate the prevalence of HIV infection among them. Twenty-four (14%) were positive on the Western Blot test. The presence of HIV infection was significantly correlated with syphilis (p < 0.03) and age (p < 0.001); 83% of those who were HIV positive were intravenous drug users. The need for harm reduction programmes to prevent spread of HIV infection among injecting drug users is stressed.

Matched MeSH terms: Risk Factors
Incidence of acute respiratory distress syndrome: a comparison of two definitions

Goh AY, Chan PW, Lum LC, Roziah M

Arch Dis Child, 1998 Sep;79(3):256-9.
PMID: 9875023

OBJECTIVES: To determine the incidence and outcome of acute respiratory distress syndrome (ARDS) in children by comparing two commonly used definitions: the lung injury score and the American-European Consensus Conference definition. The causes and risk for developing ARDS were also studied.
METHODS: Part prospective and retrospective analysis of 8100 consecutive hospital admissions from 1 June 1995 to 1 April 1997.
RESULTS: Twenty one patients fulfilled the criteria for ARDS. Both definitions identified the same group of patients. The incidence was 2.8/1000 hospital admissions or 4.2% of paediatric intensive care unit admissions. The main causes were sepsis and pneumonia. Mortality was 13 of 21. Factors predicting death were a high admission paediatric risk of mortality (PRISM) score (30.38 v 18.75) and the presence of multiple organ dysfunction syndrome (92% v 25%).
CONCLUSION: Both definitions identified similar groups of patients. The incidence in this population was higher than that reported elsewhere, but mortality and cause were similar to those in developed countries. Poor outcome was associated with sepsis, a high admission PRISM score, and simultaneous occurrence of other organ dysfunction.

Matched MeSH terms: Risk Factors
Fulltext Acute appendicitis--the University Hospital experience

Lee HY, Jayalakshmi P, Noori SH

Med J Malaysia, 1993 Mar;48(1):17-27.
PMID: 8341168

A 1 year review of 529 cases of acute appendicitis, treated at the University Hospital in 1990, was performed. Perforation rate was 23.7% and delay in diagnosis was found to be significant. Patients above 50 years of age were particularly at risk. Diagnostic error was 19.3% and it was a problem not only in young women but also in children. Temperature and rectal examinations were not found to be helpful in the diagnosis in contrast to leukocytosis. Waiting time for operation was long (median 7 hours), be it for a perforated or a nonperforated appendicitis.

Matched MeSH terms: Risk Factors
Parenting stress among mothers of Malaysian children with cerebral palsy: predictors of child- and parent-related stress

Ong LC, Afifah I, Sofiah A, Lye MS

Ann Trop Paediatr, 1998 Dec;18(4):301-7.
PMID: 9924586 DOI: 10.1080/02724936.1998.11747964

A hospital study was carried out to compare parenting stress among 87 Malaysian mothers of children with cerebral palsy and a control group (comprising 87 mothers of children without disability who attended the walk-in paediatric clinic), using the Parenting Stress Index (PSI) questionnaire. Multiple regression analysis was used to determine socio-demographic and medical factors associated with child-domain stress (CDS) and parent-domain stress (PDS). Mothers of children with cerebral palsy scored significantly higher than control subjects on all sub-scales of CDS and PDS (p < 0.01), except for the sub-scale of 'role restriction'. The presence of cerebral palsy (p < 0.001) and activities of daily living (ADL) scores (p < 0.001) were significantly associated with CDS. Factors predictive of PDS were ADL scores (p < 0.001), number of hospitalizations over the past year (p = 0.024), level of maternal education (p = 0.018) and Chinese mothers (p < 0.001). Although this study demonstrated that Malaysian mothers of children with cerebral palsy experienced higher levels of stress than controls, the impact of cerebral palsy per se on parenting stress was modified by other factors such as increased care-giving demands, low maternal education and ethnic background. Habilitation should be directed at easing the burden of daily care, minimizing hospital re-admissions and targeting appropriate psychosocial support at specific subgroups to change parental perception and expectations.
Study site: neurology clinics or physiotherapy department or inpatients, Paediatric Institute, Kuala Lumpur, Malaysia

Matched MeSH terms: Risk Factors
Relationship between head growth and neurodevelopmental outcome of Malaysian very low birthweight infants during the 1st year of life

Ong LC, Boo NY, Chandran V, Zamratol SM, Allison L, Teoh SL, et al.

Ann Trop Paediatr, 1997 Sep;17(3):209-16.
PMID: 9425375

A prospective study was carried out to (i) compare head growth patterns of 103 very low birthweight (VLBW, < 1500 g) Malaysian infants and 98 normal birthweight (NBW, 2500- < 4500 g) controls during the 1st year of life; and (ii) examine the relationship between neurodevelopmental outcome at 1 year of age and occipito-frontal head circumferences (OFC) at birth and at 1 year of age in VLBW babies. When compared with those of NBW infants at birth, mid-infancy and 1 year of age, the mean OFC ratios (observed/expected OFC at 50th percentile) of VLBW infants were significantly lower (p < 0.001). Small-for-gestational-age (SGA) VLBW babies had significantly lower mean OFC ratios than their appropriate-for-gestational-age (AGA) VLBW counterparts at birth (p < 0.001), but this difference was no longer seen at mid-infancy or at 1 year of age. Logistic regression analysis showed that abnormal late neonatal cranial ultrasound findings (odds ratio 8.5, 95% confidence interval 4.12-22.07; p < 0.001) and each additional day of oxygen therapy (odds ratio 1.15, 95% confidence interval 1.00-4.45; p = 0.045) were significant risk factors associated with neurodevelopmental disability at 1 year of age, while mean OFC ratios at birth or at 1 year of age were not. Poor postnatal head growth per se did not predict disability, but probably reflected the consequences of "brain injury" as evidenced by abnormal brain scans.

Matched MeSH terms: Risk Factors
Sensitization to inhaled allergens as a risk factor for asthma and allergic diseases in Chinese population

Leung R, Ho P, Lam CW, Lai CK

J Allergy Clin Immunol, 1997 May;99(5):594-9.
PMID: 9155823

BACKGROUND: Allergen sensitization is associated with asthma and allergic disease in children, but such a relationship has not been confirmed in Chinese populations.
OBJECTIVES: The objective of this study was to evaluate the effects of allergen sensitization and family history of atopy on asthma and allergic disease in Chinese schoolchildren from three southeast Asian populations.
METHODS: Written questionnaires on respiratory and allergic symptoms were completed by parents of children of secondary-school age (age range 12 to 18 years) in Hong Kong (n = 1062), Kota Kinabalu in eastern Malaysia (n = 409), and San Bu in southern China (n = 737). A subsample of school-children underwent skin prick testing to common inhalant allergens (Hong Kong 471 children, Kota Kinabalu 321, San Bu 647).
RESULTS: The prevalence of asthma and allergic disease in schoolchildren was highest in Hong Kong, intermediate in Kota Kinabalu, and lowest in San Bu. However, the overall rate of atopic sensitization was similar in the three populations (49% to 63%). House dust mite and cockroach were the two most common allergens causing sensitization and these gave rise to more than 95% of the positive skin test results in all three populations. By regression analysis, mite allergy was associated with rhinitis and asthma in all three populations, and a family history of asthma, rhinitis, or eczema was strongly associated with respective symptoms in the subjects. After adjusting for age, sex, atopic status, and family history of allergic disease, the place of residence remained a significant independent factor for asthma (odds ratio [OR] = 1.0 for Hong Kong, 0.57 for Kota Kinabalu, 0.15 for San Bu, p < 0.001), rhinitis (OR = 1.0 for Hong Kong, 0.59 for Kota Kinabalu, 0.15 for San Bu, p < 0.001), or eczema (OR = 1.0 for Hong Kong, 0.35 for Kota Kinabalu, 1.01 for San Bu, p < 0.001).
CONCLUSION: Sensitization to indoor allergens was a significant risk factor for asthma and allergic disease, and familial clustering of disease was common in the region. However, the marked difference in disease prevalence in the three southeast Asian populations of Chinese schoolchildren cannot be explained by atopic sensitization and family history alone, and the place of residence was an independent risk factor for asthma and allergies, which suggests an important environmental role in disease pathogenesis.

Matched MeSH terms: Risk Factors
Fulltext Prevalance of obesity and overweight in northeastern peninsular Malaysia and their relationship with cardiovascular risk factors

Mohamad WB, Mokhtar N, Mafauzy M, Mustaffa BE, Musalmah M

Southeast Asian J. Trop. Med. Public Health, 1996 Jun;27(2):339-42.
PMID: 9279999

Height and body weight were measured in 2,284 subjects over 20 years old. The subjects were chosen by cluster sampling in 9 districts of Kelantan. Blood was drawn after an overnight fast for measurement of cholesterol (chol), triglyceride (TG), VLDL and HDL-Chol. Oral glucose tolerance test was performed with 75 g glucose. The overall prevalence of overweight [BMI (kg/m2) > or = 25-< or = 30] and obesity (BMI > 30) was 21.3% and 4.5% respectively. The overweight and obese were significantly younger than the lean subjects. The prevalence of hypercholesterolemia (chol > 5.2 mmol/l) in lean, overweight and obese subjects was 65.3%, 70.2% and 74.7%, respectively. Impaired glucose tolerance was found in 16.6% of the lean, 21.6% of the overweight and 32.0% of the obese subjects. Diabetes mellitus was found in 7.9% of the lean, 10.5% of the overweight and 6.7 of the obese subjects. 10.1% of lean, 13.2% of overweight and 23.3% of obese individuals were hypertensive. In conclusion, the high prevalence of overweight and obesity in Malaysia was associated with adverse lipid and glucose metabolism as well as poor blood pressure control.

Matched MeSH terms: Risk Factors
Hypercalcaemia in patients with newly diagnosed tuberculosis in Malaysia

Liam CK, Lim KH, Srinivas P, Poi PJ

Int J Tuberc Lung Dis, 1998 Oct;2(10):818-23.
PMID: 9783529

University Hospital, Kuala Lumpur, Malaysia.

Matched MeSH terms: Risk Factors
Postoperative deep-vein thrombosis in Asian patients is not a rarity: a prospective study of 88 patients with no prophylaxis

Dhillon KS, Askander A, Doraismay S

J Bone Joint Surg Br, 1996 May;78(3):427-30.
PMID: 8636180

Postoperative deep-vein thrombosis (DVT) is believed to be rare in Asians. We studied 88 consecutive patients in Malaysia who had operations for fracture of the proximal femur or for total hip or knee replacement. No patient had prophylaxis against DVT; bilateral ascending venography was performed between six and ten days after operation. A total of 55 patients (62.5%) showed venographic evidence of DVT. The prevalence was greatest after total knee replacement (76.5%), less after total hip replacement (64.3%) and smallest in the fracture group (50%). One patient developed symptomatic pulmonary embolism. In contrast to other reports from Asia, we found an incidence of postoperative DVT which is similar to that reported in Western populations. This suggests that the present practice of withholding routine prophylaxis against thromboembolism in Asian patients undergoing high-risk orthopaedic procedures should be reconsidered.

Matched MeSH terms: Risk Factors
Fulltext Non-Hodgkin's lymphoma in an Asian population: 1968-1992 time trends and ethnic differences in Singapore

Seow A, Lee J, Sng I, Fong CM, Lee HP

Cancer, 1996 May 1;77(9):1899-904.
PMID: 8646691

BACKGROUND: Non-Hodgkin's lymphoma has increased in incidence in many countries, particularly in the West. Advances in diagnostic methods and the understanding of the disease over time pose a challenge to the interpretation of these trends. The aim of this study was to determine if the disease has increased in Singapore, a newly industrialized Asian country, and to examine the possible factors that may account for any observed changes.
METHODS: Data from the population-based Singapore Cancer Registry for the period 1968 to 1992 were reviewed to determine time trends based on sex and ethnic group. The Poisson regression model was fitted to the cross-tabulated data to obtain the adjusted incidence density ratios.
RESULTS: A total of 1988 cases of non-Hodgkin's lymphoma were included in the analysis. There was an overall increase in incidence among both Chinese and Malaysians. However, the rate of increase was greater in females (age-standardized rate from 1.8 per 100,000 in 1968-1972 to 4.5 per 100,000 in 1988-1992) than in males (3.2 per 100,000 to 5.9 per 100,000 in the same time periods). Between ethnic groups, Malay females were at higher overall risk compared with their Chinese counterparts (incidence density ratio 1.32; 95% confidence interval, 1.08-1.61). Although a substantial proportion of patients diagnosed with Hodgkin's disease between 1968 and 1972 were reclassified on review, using present criteria, as having non-Hodgkin's lymphoma, it is unlikely that this, and other recent changes in histologic interpretation, could have accounted for an increase of this magnitude.
CONCLUSIONS: Non-Hodgkin's lymphoma has increased in incidence among the Chinese and Malay populations in Singapore. The pattern of increase differs from that of the common cancer sites, and suggests the need to look for environmental and genetic factors that have not yet been elucidated.

Matched MeSH terms: Risk Factors
Fulltext Prelabour rupture of membranes and neonatal morbidity in level II nursery in Kelantan

Malik AS

Med J Malaysia, 1994 Mar;49(1):12-6.
PMID: 8057984

In view of controversial reports about the role of prelabour rupture of foetal membranes (PROM) in neonatal morbidity and to study the association of PROM with infections and meconium aspiration syndrome (MAS), a prospective case control study was conducted in a level II nursery of Hospital Universiti Sains Malaysia, Kubang Kerian, Kelantan. Of the 111 neonates with PROM studied, 18 developed clinical problems (septicaemia and other specific problems such as pneumonia, omphalitis, skin infection and MAS) while 5/56 of the control group developed similar problems. The difference between the two groups was not significant (p < 0.30). There was no neonatal death. It is concluded that PROM is not associated with neonatal morbidity. Neonates with this problem alone do not need to be admitted to the neonatal nursery.

Matched MeSH terms: Risk Factors
Fulltext Severe tetanus--in spite of tetanus toxoid

Nivedita N

Med J Malaysia, 1994 Mar;49(1):105-7.
PMID: 8057983

A 66-year-old man sustained an injury to his right foot while gardening. Despite receiving tetanus toxoid one hour later and adequate wound toilet, he developed severe tetanus complicated with autonomic dysfunction six days later. He died 20 days after admission. This case shows that tetanus toxoid alone may not be sufficient to prevent tetanus in wounded patients. Careful consideration must be given to the immune status of the patient and to the nature of the wound sustained. Incompletely immunised patients or patients with unknown immune status who sustain a tetanus prone wound should be protected with both tetanus toxoid and tetanus immunoglobulin.

Matched MeSH terms: Risk Factors
Prevalence of snoring and sleep breathing-related disorders in Chinese, Malay and Indian adults in Singapore

Ng TP, Seow A, Tan WC

Eur Respir J, 1998 Jul;12(1):198-203.
PMID: 9701437

This study investigated the prevalence of snoring and symptoms of sleep breathing-related disorders in the multi-ethnic population of Singapore (3 million people, comprising 75% Chinese, 15% Malay and 7% Indian). A multistaged, area cluster, disproportionate stratified, random sampling of adults aged 20-74 yrs was used to obtain a sample of 2,298 subjects (65% response), with approximately equal numbers of Chinese, Malay and Indian and in each 10 yr age group. An interviewer-administered field questionnaire was used to record symptoms of snoring and breathing disturbances during sleep witnessed by a room-mate and other personal and health-related data. The weighted point estimate (and 95% confidence interval) of the whole population prevalence of snoring was 6.8% (53-83). There were pronounced ethnic differences among Chinese, 6.2% (4.4-8.1); Malay, 8.1% (6.1-10.2) and Indian, 10.9% (85-13.4). The minimum whole population prevalence by the most restricted symptom criteria for defining sleep breathing-related disorder was 0.43% (0.05-0.8%). Similar marked ethnic differences in rates were observed using various symptom criteria. The ethnic differences in sleep breathing symptoms paralleled the differences in body mass index, neck circumference and hypertension, but statistically significant differences remained after adjustment for sex, age and these known associated factors. Marked ethnic differences in snoring and sleep breathing-related disorders were observed in Chinese, Malays and Indians in Singapore, which were only partly explained by known factors of sex, age and body habitus.

Matched MeSH terms: Risk Factors
Indoor air pollution and asthma in hospitalized children in a tropical environment

Azizi BHO, Zulkifli HI, Kasim S

J Asthma, 1995;32(6):413-8.
PMID: 7592244 DOI: 10.3109/02770909409077752

We performed a hospital-based study to examine a hypothesis that indoor air pollution was associated with acute asthma in young children living in Kuala Lumpur City. A total of 158 children aged 1 month to 5 years hospitalized for the first time for asthma were recruited as cases. Controls were 201 children of the same age group who were hospitalized for causes other than a respiratory illness. Information was obtained from mothers using a standardized questionnaire. Univariate analysis identified two indoor pollution variables as significant factors. Sharing a bedroom with an adult smoker and exposure to mosquito coil smoke at least three nights in a week were both associated with increased risk for asthma. Logistic regression analysis confirmed that sharing a bedroom with an adult smoker (OR = 1.91, 95% CI 1.13, 3.21) and exposure to mosquito coil smoke (OR = 1.73, 95% CI 1.02, 2.93) were independent risk factors. Other factors independently associated with acute asthma were previous history of allergy, history of asthma in first-degree relatives, low birth weight, and the presence of a coughing sibling. There was no association between asthma and exposure to kerosene stove, wood stove, aerosol mosquito repellent, type of housing, or crowding. We conclude that indoor air pollution is an avoidable factor in the increasing morbidity due to asthma in children in a tropical environment.

Matched MeSH terms: Risk Factors
Periventricular haemorrhage in very low birth weight Malaysian neonates

Boo NY, Ong LC, Lye MS, Wong KP, Mastura M

J Trop Pediatr, 1993 Aug;39(4):224-9.
PMID: 8411316

A prospective study was carried out to determine the incidence, clinical presentation, early outcome, and risk factors associated with periventricular haemorrhage (PVH) in 88 (84 per cent) of the 105 consecutive very low birth weight (VLBW) (< 1500 g) Malaysian neonates born in the Maternity Hospital, Kuala Lumpur. Based on the cranial ultrasound findings, PVH was detected in 86 of the 88 neonates (98 per cent, 95 per cent confidence intervals: 95 to 101). Seventeen (20 per cent) of them had grade I, 52 (61 per cent) had grade II, 7 (8 per cent) had grade III and 10 (12 per cent) had grade IV PVH. PVH was detected in all the affected neonates by the fifth day of life. Sixty-four neonates (74 per cent) were symptomatic when PVH was first detected. Shock (P < 0.01), pallor (P = 0.028), low haematocrit of less than 40 per cent (P < 0.01), convulsion (P < 0.001), and bulging of anterior fontanelle (P = 0.019) were significantly more common in the neonates with severe PVH (grades III or IV). Death occurred in 43/86 (50 per cent, 95 per cent confidence interval: 39-61 per cent) of the neonates with PVH before their first discharge from the hospital. Ventriculomegaly developed in 29/43 (67 per cent, 95 per cent confidence intervals: 54.4-81.4) of the survivors with PVH. Our study suggests that PVH is a common problem in the Malaysian VLBW neonates. To reduce the incidence and severity of this condition, prevention of preterm delivery and improvement in the basic facilities for neonatal care would help.

Matched MeSH terms: Risk Factors
Changing prognosis of childhood cancer--an overview

Lin HP

Ann Acad Med Singap, 1993 Mar;22(2):182-6.
PMID: 8363329

Significant advances in diagnosis and management have cured the majority of children with cancer. In the leukaemias, the commonest childhood malignancy, intensive induction-consolidation is important to ensure a lasting cure in about 65-80% and to eliminate the traditionally bad prognostic risk factors associated with less intensive treatment. Bone marrow transplantation (BMT) has a curative role in the minority who relapse particularly while on treatment. With few exceptions, most paediatric solid tumours are curable. Although the multimodal approach is responsible for the progress made, chemotherapy has emerged to play a dominant role. It has, in several tumours, obviated or reduced the need for radiotherapy and/or surgery. In Wilms' tumour and Hodgkin's disease, refinement of treatment is now in progress to reduce therapy-related morbidity while not sacrificing efficacy.

Matched MeSH terms: Risk Factors
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.

Matched MeSH terms: Risk Factors

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