Displaying publications 541 - 560 of 2034 in total

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  1. Mohamed Faris Laham, Ishtrinayagy S. Krishnarajah, Jamilah Mohd Shariff
    Sains Malaysiana, 2012;41:171-177.
    This paper studies the harvesting strategies for tilapia fish farming. Two logistic growth models have been used namely constant harvesting and periodic harvesting. Even though tilapia fish farming has been commercialized, the use of mathematical models in determining harvesting strategies has not been widely applied in Malaysia. Logistic growth model is appropriate for population growth of animal when overcrowding and competition resources are taken into consideration. The objectives of this study were to estimate the highest continuing yield from fish harvesting strategies implemented. Secondly, the study predicted the optimum quantity for harvesting that can ensure the tilapia fish supply is continuous. Finally, to compare the results obtained between the two strategies. The best harvesting strategy for the selected fish farm is periodic harvesting. These findings can assist fish farmers to increase the supply to meet the demand for tilapia fish.
    Matched MeSH terms: Population Growth
  2. Jatupol Kampuansai, Siriwadee Chomdej
    Sains Malaysiana, 2015;44:1453-1459.
    Microsatellite DYS385 is a highly polymorphic marker in the Y chromosome. It has been used for investigating population genetic structure and personal identification in various ethnic groups of the world. This research aimed to analyze the microsatellite DYS385 polymorphism among 9 Tai and 11 Mon-Khmer speaking populations of northern Thailand. Fiftysix different haplotypes were found in 453 samples from 20 populations. Haplotype diversities and discrimination powers of populations belonging to the Tai linguistic family was higher than those of the Mon-Khmer group. Genetic affinities based on DYS385 variation do not conform to linguistic classification but a fraction of genetic divergence patterns can be explained by geographic distances.
    Matched MeSH terms: Genetics, Population
  3. Ruzi A, Ismail BS, Ummu Hani B, Sahimi S, Azi Azeyanty J, Noraini T
    Sains Malaysiana, 2016;45:247-253.
    A comprehensive survey and descriptions on the petiole anatomy was undertaken on 16 species belonging to four selected genera (Anisoptera, Cotylelobium, Vatica and Upuna) in the tribe Dipterocarpeae to investigate variations in vascular bundle structure. Methods used in this study were petiole sectioning using a sliding microtome, staining, mounting and observation under light microscope. Findings had shown that all species studied have complex vascular bundle structures, consisting of outer and medullary vascular bundles. Four different types of vascular bundle arrangements were found and described as Types 1, 2, 3 and 4. The vascular bundle types were determined based on the arrangement and system of vascular bundle strands present in the petiole transverse sections. These vascular bundle types were determined and suggested for easy reference. The results showed that vascular bundles can be used for identification of certain species and can definitely be used for classification of different genera. The presence of sclerenchyma cells is useful in differentiating genera. As a conclusion, the petiole vascular bundle anatomical characteristics have taxonomic value, especially in the identification of some species and possibly applicable in the classification of the tribe Dipterocarpeae.
    Matched MeSH terms: Population Groups
  4. Shamsul Azhar Shah, Suzuki H, Mohd Rohaizat Hassan, Saito R, Nazarudin Safian, Shaharudin Idrus
    Sains Malaysiana, 2012;41:911-919.
    The determination of the high-risk area and clusters of typhoid cases is critical in typhoid control. The purpose of this study was to identify and describe the epidemiology and spatial distribution of typhoid in four selected districts in Kelantan using GIS (geographical information system). A total of 1215 (99%) of the cases were coordinated with GPS (global positioning system) and mapping was done using ArcGIS 9.2. Spatial analysis was performed to determine the cluster and high-risk area of typhoid. Results showed that typhoid incidence was not associated with race and sex. Most affected were from the age group of 5-14 followed by 15-24 year olds. Nine sub-districts were categorized as highly endemic. In addition typhoid has shown a significant tendency to cluster and a total of 22 hotspots were found in Kota Bharu, Bachok and Tumpat with a few sub districts identified as high risk for typhoid. No significant relationships between the treated water ratio and flood risk area were found with the cluster of cases. The cluster of typhoid cases in the endemic area did not appear to be related to environmental risk factors. Understanding the characteristics of these clusters would enable the prevention of typhoid disease in the future.
    Matched MeSH terms: Continental Population Groups
  5. Nuril Aida K, Idris A
    Anochetus maryatiae, a new species of Formicidae from the subfamily Ponerinae, tribe Ponerini from Ulu Gombak is described and illustrated. This ant genus was last studied in Malaysia by Brown in 1978. Observations were made on morphometric characters which included parameter measurements of total length, head length, head width, mandible length, scape length, antenna length, maximum eye length, oculomandibular distance, funicular length segment 1 to 4, pronotum width, propodeum height, petiole length, petiole height, dorsal petiole width, cephalix index and mandibular index. It was followed by a brief diagnosis, description of morphological structure, microsculpture, pilosity and discussion. Although it has resemblance with Anochetus tua, it could be easily distinguished from other species in having reticulate pronotum. This is the only species from Malaysia with such microsculpture on the pronotum. In addition to that, A. maryatie varies with A. tua in having smaller total length, less than 7.5 mm and lighter colour.
    Matched MeSH terms: Population Groups
  6. Othman A.K., Othman J., Sharifah Mastura S.A.
    This paper focuses on Langat River basin which is experiencing fast pace land use changes and accelerated soil erosion associated with land clearing and earthwork activities. Land use changes detected from Landsat imageries from 1989-1999 show that urban expansion is the most active, i.e. recording an expansion of 180% over that time period. The major land use reduction is the tropical dipterocarp rainforest located along the upper catchment of the Langat River and the mangrove forest found along Kuala Langat in the west. The 11% decline in the trend of the forest over that decade is anticipated to contribute in the near future. Results from logistic regression on the casual factors of rapid land use changes are attributed to three significant variables namely transport accessibility, population dynamics and agriculture. The eroded material due to land use changes enters into the Langat River systems as suspended sediments and contributed as non point source of pollution. Some finer sediment is being discharged offshore forming sediment plumes at the river estuary. Sediment plumes detected by Landsat TM imageries were analysed. It is found that the dispersion was not extensive and generally the suspended solids existed at low concentration (varying from 10-50 mg/l). This result is unexpected considering the rapid land use and land cover change that is occurring within the basins. These are mainly due to the loss of sediments during flooding into flood plain and active dredging of the river channels.
    Matched MeSH terms: Population Dynamics
  7. Ullah S, Daud H, Dass SC, Fanaee-T H, Kausarian H, Khalil A
    PMID: 32098247 DOI: 10.3390/ijerph17041413
    The number of tuberculosis (TB) cases in Pakistan ranks fifth in the world. The National TB Control Program (NTP) has recently reported more than 462,920 TB patients in Khyber Pakhtunkhwa province, Pakistan from 2002 to 2017. This study aims to identify spatial and space-time clusters of TB cases in Khyber Pakhtunkhwa province Pakistan during 2015-2019 to design effective interventions. The spatial and space-time cluster analyses were conducted at the district-level based on the reported TB cases from January 2015 to April 2019 using space-time scan statistics (SaTScan). The most likely spatial and space-time clusters were detected in the northern rural part of the province. Additionally, two districts in the west were detected as the secondary space-time clusters. The most likely space-time cluster shows a tendency of spread toward the neighboring districts in the central part, and the most likely spatial cluster shows a tendency of spread toward the neighboring districts in the south. Most of the space-time clusters were detected at the start of the study period 2015-2016. The potential TB clusters in the remote rural part might be associated to the dry-cool climate and lack of access to the healthcare centers in the remote areas.
    Matched MeSH terms: Rural Population
  8. Ahmad Z, Jaafar R, Md Hassan MH, Othman MS, Hashim A
    Family Physician, 1995;7:11-15.
    Anaemia still constitutes a public health problem in the world, especially in the developing countries (1). Nutritional deficiency remains a major causative factor (2). During pregnancy, growth of the foetus, placenta and the larger amount of circulating blood in the expectant mother will lead to an increase in the demand for nutrients, especially iron and folic acid. Many women start their lives with insufficient iron stores, but also, because of inadequate child spacing, they have little time to build up their iron levels between pregnancies. In pregnancy, anaemia has been shown to be associated with an increased risk of maternal and fetal morbidity and mortality (3,4,5). Iron and folic acid supplementation is routinely given to pregnant mothers in Malaysia. It is anticipated that pregnant mothers who comply strictly with the prescribed iron supplement will maintain adequate iron stores at parturition. However, the compliance rate among rural mothers in Kelantan is often poor (6). Kelantan is also one of the most socio-economically underdeveloped
    Matched MeSH terms: Rural Population
  9. Yusuf A, Mamun ASMA, Kamruzzaman M, Saw A, Abo El-Fetoh NM, Lestrel PE, et al.
    BMC Pediatr, 2019 06 29;19(1):213.
    PMID: 31255172 DOI: 10.1186/s12887-019-1581-9
    BACKGROUND: Anemia is not only a major public health problem among children in developing countries, it is also an important predictor for their future growth and development. The objective of this study was to identify possible factors associated with anemia among pre-school children in Bangladesh after removing a cluster effect of the population, and to determine the prevalence of this condition.

    METHODS: Data for this study was extracted from the 2011 Bangladesh Demographic and Health Survey (BDHS-2011). In this survey, data was collected using a two-stage stratified cluster sampling approach. The chi-square test and a two-level logistic regression model were used for further analysis.

    RESULTS: Data from 2231 children aged 6-59 months were included for analysis. The prevalence of child anemia was noted to be 52.10%. Among these anemic children, 48.40% where from urban environment and 53.90% were from rural areas. The prevalence of mild, moderate and severe anemia among children was 57.10, 41.40 and 1.50% respectively. The two-level logistic regression model revealed that the following factors were associated with childhood anemia: children of anemic mothers (p 

    Matched MeSH terms: Rural Population/statistics & numerical data; Urban Population/statistics & numerical data
  10. Nor Azah Samat, Syafiqah Husna Mohd Imam Ma’arof
    Sains Malaysiana, 2016;45:1741-1745.
    Disease frequency is used to measure the situation of the disease with reference to the population size and time period
    which is in a fractional form. The lower part of the fraction, known as denominator is the important part as it was used
    to calculate a rate or ratio. Since the disease frequency is based on a ratio estimator, the results are highly dependent
    upon the value of denominator. Therefore, the main aim of this paper was to propose a new method in calculating the
    denominator for the relative risk equation with the application to chikungunya disease data from Malaysia. The new
    method of calculating the denominator of the relative risk equation includes the use of discrete time-space stochastic
    SIR-SI (susceptible-infective-recovered for human population and susceptible-infective for vector population) disease
    transmission model instead of the total disease counts. The results of the analysis showed that the estimation of expected
    disease counts based on total posterior means can overcome the problem of expected counts estimation based on the total
    number of disease especially when there is no observed disease count in certain regions. The proposed new approach to
    calculate the denominator for the relative risk equation is suitable for the case of rare disease in which it offers a better
    method of expected disease counts estimation.
    Matched MeSH terms: Population Density
  11. Shahar S, Vanoh D, Mat Ludin AF, Singh DKA, Hamid TA
    BMC Public Health, 2019 Jun 13;19(Suppl 4):549.
    PMID: 31196023 DOI: 10.1186/s12889-019-6866-2
    BACKGROUND: Poverty at old age is associated with poor dietary habit, nutritional status and higher rates of chronic diseases and psychosocial problems. However, there is limited information about this matter according to urban and rural settings. The aim of this study was to identify dietary, nutritional, physical and cognitive factors associated with poor socioeconomic status (SES) among older adults according to urban and rural settings in Malaysia.

    METHODS: An analysis was conducted among 2237 older adults who participated in a longitudinal study on aging (LRGS TUA). This study involved four states in Malaysia, with 49.4% from urban areas. Respondents were divided into three categories of SES based on percentile, stratified according to urban and rural settings. SES was measured using household income.

    RESULTS: The prevalence of low SES was higher among older adults in the rural area (50.6%) as compared to the urban area (49.4%). Factors associated with low SES among older adults in an urban setting were low dietary fibre intake (Adj OR:0.91),longer time for the Timed up and Go Test (Adj OR:1.09), greater disability (Adj OR:1.02), less frequent practice of caloric restriction (Adj OR:1.65), lower cognitive processing speed score (Adj OR:0.94) and lower protein intake (Adj OR:0.94). Whilst, among respondents from rural area, the factors associated with low SES were lack of dietary fibre intake (Adj OR:0.79), lower calf circumference (Adj OR: 0.91), lesser fresh fruits intake (Adj OR:0.91), greater disability (Adj OR:1.02) and having lower score in instrumental activities of daily living (Adj OR: 0.92).

    CONCLUSION: Lower SES ismore prevalent in rural areas. Poor dietary intake, lower fitness and disability were common factors associated with low in SES, regardless of settings. Factors associated with low SES identifiedin both the urban and rural areas in our study may be useful inplanning strategies to combat low SES and its related problems among older adults.

    Matched MeSH terms: Rural Population/statistics & numerical data*; Urban Population/statistics & numerical data*
  12. Kaur S, Ng CM, Badon SE, Jalil RA, Maykanathan D, Yim HS, et al.
    BMC Public Health, 2019 Jun 13;19(Suppl 4):539.
    PMID: 31196034 DOI: 10.1186/s12889-019-6864-4
    BACKGROUND: Low birth weight prevalence in Malaysia remains high. Socioeconomic background may lead to differences in physical activity and maternal nutritional status, which may play an important role in birth outcomes.

    METHODS: This prospective cross-sectional study aimed to identify rural-urban differences in risk factors for low birth weight among women in Malaysia. Pregnant women at ≥20 weeks of gestation in urban and rural Malaysia (n = 437) completed questionnaires on sociodemographic characteristics and physical activity. Weight and middle-upper arm circumference were measured. Infant birth outcomes were extracted from medical records.

    RESULTS: The overall prevalence of low birth weight infants was 6.38%. Rural women had more low birth weight infants than urban women (9.8% vs 2.0%, p = 0.03). Findings showed rural women were less sedentary (p = 0.003) and participated in more household/caregiving activities (p = 0.036), sports activities (p = 0.01) and less occupational activity (p 

    Matched MeSH terms: Rural Population/statistics & numerical data*; Urban Population/statistics & numerical data*
  13. Nurul Shazalina Zainudin, Siti Nur Su’aidah Nasarudin, Norhayati Moktar, Aishah Hani Azil, Emelia Osman
    The purpose of this study is to review the literature on microsporidiosis in various high-risk groups among the Malaysian population, i.e., HIV/AIDS, cancer, hospitalised patients and Orang Asli, and to update information with regards to microsporidia prevalence, diagnosis and association of the disease with gastrointestinal symptoms in Malaysia. Hospitalised patients showed the highest prevalence (28.3%) of microsporidiosis compared to other risk groups. This review did not find any direct correlations between gastrointestinal symptoms and microsporidiosis. Since microsporidiosis is an emerging threat to the high-risk groups, greater awareness should be instilled among clinicians to consider microsporidiosis in their differential diagnosis if no other causes can be defined.
    Matched MeSH terms: Population Groups
  14. Lee CC, Lee CY
    J Econ Entomol, 2015 Jun;108(3):1243-50.
    PMID: 26470252 DOI: 10.1093/jee/tov112
    The optimum maintenance conditions of the fungus-growing termite, Macrotermes gilvus (Hagen) (Blattodea: Termitidae), in the laboratory were studied. Termites were kept on a matrix of moist sand and with fungus comb as food. The survival of groups of termites was measured when maintained at different population densities by changing group size and container volume. Larger groups (≥0.6 g) were more vigorous and had significant higher survival rates than smaller groups (≤0.3 g). The population density for optimal survival of M. gilvus is 0.0025 g per container volume (ml) or 0.0169 g per matrix volume (cm(3)), i.e., 1.2 g of termites kept in a 480-ml container filled with 71 cm3 of sand. In termite groups of smaller size (i.e., 0.3 g) or groups maintained in smaller container (i.e., 100 ml) the fungus comb was overgrown with Xylaria spp., and subsequently all termites died within the study period. The insufficient number of workers for regulating the growth of unwanted fungi other than Termitomyces spp. in the fungus comb is the most likely reason. Unlike some other mound-building termite species, M. gilvus showed satisfactory survival when maintained in non-nutritious matrix (i.e., sand). There was no significant difference in the survival rate between different colonies of M. gilvus (n=5), with survival in the range of 78.5-84.4% after 4 wk. Advances in the maintenance of Macrotermes will enable researchers to study with more biological relevance many aspects of the biology, behavior, and management of this species.
    Matched MeSH terms: Population Density
  15. Mas-Harithulfadhli-Agus AR, Hamid NA, Rohana AJ
    Ethn Health, 2021 02;26(2):264-279.
    PMID: 30041543 DOI: 10.1080/13557858.2018.1494820
    Objectives: The objectives of this study were to determine the prevalence of malnutrition among five-year-olds and factors associated with unsuccessful outcome of a Food Basket Programme (FBP) in a rural district of Kelantan, Malaysia.Design: Administrative health records from selected health clinics were reviewed. Study sample includes indigenous population or Orang Asli of Malaysia. Unsuccessful outcome was defined according to failure to complete the programme according to growth gain and on-time. Multiple logistics regression was used to assess the associated factors of unsuccessful outcome of FBP.Results: This study showed that the prevalence rates of malnutrition among children below five years old were 34.2% underweight, 16.4% thinness, 32.5% stunting and 3.0% overweight, with Orang Asli children faring the worse. Orang Asli children were also five times more likely to be unsuccessful in the FBP (p 
    Matched MeSH terms: Rural Population
  16. Mahmud MH, Baharudin UM, Md Isa Z
    BMC Public Health, 2022 Nov 16;22(1):2090.
    PMID: 36384509 DOI: 10.1186/s12889-022-14449-2
    Orang Asli, the indigenous people of Peninsular Malaysia, is a minority population and placed behind in terms of socioeconomy, education and health. The Malaysian government has supported Orang Asli since the second Malaysia Plan in the 1970s, resulting in changes in their living standard, access to health, education and occupation. Hence, this review aims to assess the recent prevalence of diseases among Orang Asli in Peninsular Malaysia. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) review protocol guided this systematic review. The research question was formulated based on Population, Interest, Comparison and Outcome (PICO). The selected databases include Web of Science, Scopus, Ovid and EBSCOhost. The process of identification, screening and inclusion identified 33 articles. The mixed methods appraisal tool (MMAT) was then used to rank the quality of the articles. Selangor is the most frequent state involved in this review (12 studies), followed by Perak (10 studies), Pahang (10 studies) and Kedah (one study). We categorised into four categories of diseases, namely neglected tropical disease (n = 20), non-communicable disease (n = 6), nutritional status (n = 5), and hepatic disease (n = 2). The prevalence of diseases among Orang Asli is higher than in the general population, especially for soil-transmitted helminth (STH) and malnutrition. There is increasing research on non-communicable diseases due to an increasing trend in the socioeconomic status and lifestyle of the Orang Asli. Government agencies and private organisations must work together to empower Orang Asli with a healthy lifestyle, improve their socioeconomic status, and enhance food security, all of which will improve Orang Asli's health and reduce the prevalence of diseases.
    Matched MeSH terms: Population Groups
  17. Salleh NM, Tan BA, Arshat H
    Malays J Reprod Health, 1986 Jun;4(1):20-8.
    PMID: 12268569
    PIP: The effectiveness and impact of the Population and Family Health Project in the rural areas of Malaysia is evaluated. A total of 790 women who delivered during the past 3 years from the time of the survey, were identified from 2,013 women aged 15-49 years, during the 2nd Family and Health Survey (1979) in Peninsular Malaysia. The rural health districts which were selected by random sampling include: Perlis, Kubang Pasu, Sebeang Perai Selatan, Kuala Selangor, Hulu Langat, Melaka Utara, Kota Bharu/Tumpat, and Pasir Mas. The pattern of maternal care during pregnancy, delivery and puerperium are examined with respect to selected variables. These women are further classified into 2 groups by type of birth attendant at delivery and these 2 groups are also examined in relation to selected socioeconomic variables. The major proportion of women had their 1st antenatal visit during the 2nd and 3rd trimester of pregnancy. The highest % (28.3%) of 1st antenatal visits occurred during the 5th month of pregnancy. Use of a trained medical practitioner is preferred (82.5%), while only 17.5% of women preferred the services of traditonal birth attendants. Women in this latter group had less education and were in lower income groups, than the former group of women. Majority of women in all ethnic and age groups had no postnatal check after their last childbirth.
    Matched MeSH terms: Population; Population Characteristics; Rural Population*
  18. Jegasothy R, Sengupta P, Dutta S, Jeganathan R
    J Basic Clin Physiol Pharmacol, 2020 Dec 14;32(5):911-924.
    PMID: 33580644 DOI: 10.1515/jbcpp-2020-0236
    Climate change is an incessant global phenomenon and has turned contentious in the present century. Malaysia, a developing Asian country, has also undergone significant vicissitudes in climate, which has been projected with significant deviations in forthcoming decades. As per the available studies, climate changes may impact on the fertility, either via direct effects on the gonadal functions and neuroendocrine regulations or via several indirect effects on health, socioeconomic status, demeaning the quality of food and water. Malaysia is already observing a declining trend in the Total fertility rate (TFR) over the past few decades and is currently recorded below the replacement level of 2.1 which is insufficient to replace the present population. Moreover, climate changes reportedly play a role in the emergence and cessation of various infectious diseases. Besides its immediate effects, the long-term effects on health and fertility await to be unveiled. Despite the huge magnitude of the repercussion of climate changes in Malaysia, research that can explain the exact cause of the present reduction in fertility parameters in Malaysia or any measures to preserve the national population is surprisingly very scarce. Thus, the present review aims to elucidate the possible missing links by which climate changes are impairing fertility status in Malaysia.
    Matched MeSH terms: Population Dynamics
  19. Haider S, Hassali MA, Iqbal Q, Anwer M, Saleem F
    Lancet Infect Dis, 2016 12;16(12):1333.
    PMID: 27998597 DOI: 10.1016/S1473-3099(16)30452-2
    Matched MeSH terms: Rural Population
  20. Htet AS, Bjertness MB, Sherpa LY, Kjøllesdal MK, Oo WM, Meyer HE, et al.
    BMC Public Health, 2016 12 05;16(1):1225.
    PMID: 27919240
    BACKGROUND: Recent societal and political reforms in Myanmar may upturn the socio-economy and, thus, contribute to the country's health transition. Baseline data on urban-rural disparities in non-communicable disease (NCD) risk factors are not thoroughly described in this country which has been relatively closed for more than five decades. We aim to investigate urban-rural differences in mean values and the prevalence of selected behavioral and metabolic risk factors for non-communicable diseases and 10-years risk in development of coronary heart diseases (CHD).

    METHODS: Two cross-sectional studies were conducted in urban and rural areas of Yangon Region in 2013 and 2014 respectively, using the WHO STEPwise approach to surveillance of risk factors of NCDs. Through a multi-stage cluster sampling method, 1486 participants were recruited.

    RESULTS: Age-standardized prevalence of the behavioral risk factors tended to be higher in the rural than urban areas for all included factors and significantly higher for alcohol drinking (19.9% vs. 13.9%; p = 0.040) and low fruit & vegetable consumption (96.7% vs. 85.1%; p = 0.001). For the metabolic risk factors, the tendency was opposite, with higher age-standardized prevalence estimates in urban than rural areas, significantly for overweight and obesity combined (40.9% vs. 31.2%; p = 0.023), obesity (12.3% vs.7.7%; p = 0.019) and diabetes (17.2% vs. 9.2%; p = 0.024). In sub-group analysis by gender, the prevalence of hypercholesterolemia and hypertriglyceridemia were significantly higher in urban than rural areas among males, 61.8% vs. 40.4%; p = 0.002 and 31.4% vs. 20.7%; p = 0.009, respectively. Mean values of age-standardized metabolic parameters showed higher values in urban than rural areas for both male and female. Based on WHO age-standardized Framingham risk scores, 33.0% (95% CI = 31.7-34.4) of urban dwellers and 27.0% (95% CI = 23.5-30.8) of rural dwellers had a moderate to high risk of developing CHD in the next 10 years.

    CONCLUSION: The metabolic risk factors, as well as a moderate or high ten-year risk of CHD were more common among urban residents whereas behavioral risk factors levels were higher in among the rural people of Yangon Region. The high prevalences of NCD risk factors in both urban and rural areas call for preventive measures to reduce the future risk of NCDs in Myanmar.

    Matched MeSH terms: Rural Population/statistics & numerical data*; Urban Population/statistics & numerical data*
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