MyMedR

Multivariate areal analyses of neo-natal mortality in peninsular Malaysia

Tey Nai Peng, Tan Boon Ann, Arshat H

Malays J Reprod Health, 1985 Jun;3(1):46-58.

PMID: 12314427

Matched MeSH terms: Population Dynamics

Aging in Multi-ethnic Malaysia

Tey NP, Siraj SB, Kamaruzzaman SB, Chin AV, Tan MP, Sinnappan GS, et al.

Gerontologist, 2016 08;56(4):603-9.

PMID: 26553738 DOI: 10.1093/geront/gnv153

Multiethnic Malaysia provides a unique case study of divergence in population aging of different sociocultural subgroups within a country. Malaysia represents 3 major ethnicities in Asia-the Malay, Chinese, and Indian. The 3 ethnic groups are at different stages of population aging, as they have undergone demographic transition at different pace amidst rapid social and economic changes. Between 1991 and 2010, the Malaysian population aged 60 and over has more than doubled from about 1 million to 2.2 million, and this is projected to rise to about 7 million or 17.6% of the projected population of 40 million by 2040. In 2010, the aging index ranged from 22.8% among the Bumiputera (Malays and other indigenous groups), to 31.4% among the Indians and 55.0% among the Chinese. Population aging provides great challenges for Malaysia's social and economic development. The increasing prevalence of noncommunicable diseases in older adults, coupled with the erosion of the traditional family support system has increased demands on health care services with an overwhelming need for multidisciplinary and specialized geriatric care. Following the adoption of the National Policy for the Elderly in 1995, issues of population aging have gained increasing attention, especially among researchers. There is an urgent need to increase public awareness, develop infrastructure, as well as support action oriented research that will directly translate to comprehensive and cohesive social strategies, policies, and legislation to protect not just the current older Malaysians but the future of all Malaysians.

Matched MeSH terms: Population Dynamics

The impact of poverty on fertility in Peninsular Malaysia: a cohort analysis

Teo P

GeoJournal, 1991 Feb;23(2):125-33.

PMID: 12317879

Matched MeSH terms: Population Dynamics

The relationship between poverty and fertility in Peninsular Malaysia: a district analysis

Teo Cheok Chin P

Tijdschr Econ Soc Geogr, 1989;80(5):284-301.

PMID: 12157771

Matched MeSH terms: Population Dynamics

Population ecology and movement of the American cockroach (Dictyoptera: Blattidae) in sewers

Tee HS, Saad AR, Lee CY

J Med Entomol, 2011 Jul;48(4):797-805.

PMID: 21845938

The population size, age-class structure, and movement of the American cockroach, Periplaneta americana (L.) (Dictyoptera: Blattidae), were studied in three sewers in Penang, Malaysia, from September 2008 to October 2009. Eighteen to 20 glass-jar traps (two per manhole) were deployed for a 24-h period during each sampling occasion at each sewer. Adults and nymphs were active throughout the study period, with an average monthly trap catch of 57-97 adults and 79-99 nymphs. The mean proportions of adults and nymphs at the three sewers ranged from 0.47 to 0.57. Of the 2177 male and 2717 female cockroaches marked and released over the three sewers, recapture rates were 29.4-45.8 and 30.8-47.0%, respectively. The proportion of marked males and females did not differ significantly from the proportion of recaptured marked males and females. However, the mean number of times a marked female was recaptured was significantly greater than that of males. Of the 783 males and 1,030 females that were marked and recaptured, 19.4 and 24.7%, respectively, had moved between manholes, and significantly more females than males moved between manholes. Of the 406 recaptured marked adults that moved between manholes, 90.4% moved a distance of 2-20 m from their initial release site; one male moved 192 m, the longest distance recorded. Trap catch on each sampling occasion was positively correlated with daily mean temperature. The number of cockroach movements between manholes also was correlated with the mean daily minimum temperature.

Matched MeSH terms: Population Dynamics

Fulltext Socio-economic development and mortality patterns and trends in Malaysia

Tan Poo Chang, Kwok Kwan Kit, Tan Boon Ann, Shyamala Nagaraj, Tey Nai Peng, Siti Norazah Zulkifli

Asia Pac Popul J, 1987 Mar;2(1):3-20.

PMID: 12341034

PIP: Morality in Peninsular Malaysia has reached a level that is quite similar to that prevailing in the low mortality countries. This article systematically documents changes in mortality levels and differentials in Malaysia over time and relates these to changes in development indicators and health-related policies. Remedial measures undertaken by the authorities including the expansion of hospital and health services into the estates, together with a comprehensive malaria-eradication program, improvements in sanitation laws, and increased provision of public utilities and education, resulted in beriberi being eliminated and the incidence of malaria, typhus, and smallpox being greatly reduced by the time of World War II. The gain in life expectancy over the period of 1957-1979 was greatest for the Malay, the most significant period being 1957-1967, which saw the introduction of rural health programs. The infant mortality rate and the neonatal and post-neonatal rates declined substantially for all ethnic groups in Peninsular Malaysia for the same time period. Although the lower infant mortality of the Chinese can be explained by their advantageous socioeconomic position the same reason cannot explain the lower decline in infant mortality levels of the Indians. Much still needs to be done to narrow, if not to eliminate, the existing mortality differentials of different groups in the country. Overall, the quality of life of the general population can be further enhanced by reducing the high mortality level of disadvantaged groups.

Matched MeSH terms: Population Dynamics*

Estimating impact of Malaysian family planning programme on births: a comparison of matched acceptor and non-acceptor birth rates

Tan Boon Ann, Tey Nai Peng

Malays J Reprod Health, 1984 Dec;2(2):111-8.

PMID: 12280341

Matched MeSH terms: Population Dynamics

Age at menarche in Peninsular Malaysia: time trends, ethnic differentials, and association with ages at marriage and at first birth

Tan Boon Ann, Othman R, Butz WP, Davanzo J

Malays J Reprod Health, 1983 Dec;1(2):91-108.

PMID: 12313339

Matched MeSH terms: Population Dynamics

Multivariate areal analysis of the impact and efficiency of the family planning programme in peninsular Malaysia

Tan Boon Ann

Asia Pac Popul J, 1987 Jun;2(2):45-66.

PMID: 12341280

Matched MeSH terms: Population Dynamics*

Attitudes towards induced abortion in Peninsular Malaysia--a Guttman scale analysis

Takeshita YJ, Tan Boon Ann, Arshat H

Malays J Reprod Health, 1986 Dec;4(2):73-90.

PMID: 12314887

Matched MeSH terms: Population Dynamics

Growth strategies differentiate the spatial patterns of 11 dipterocarp species coexisting in a Malaysian tropical rain forest

Suzuki RO, Numata S, Okuda T, Nur Supardi MN, Kachi N

J Plant Res, 2009 Jan;122(1):81-93.

PMID: 19037582 DOI: 10.1007/s10265-008-0198-0

We examined relationships between mortality rate, relative growth rate (RGR), and spatial patterns of three growth stages (small, medium, and large trees) for 11 dipterocarp species in the Pasoh 50-ha plot. Mortality rates for these species tended to be positively correlated with RGRs, although the correlation was significant only at the small-tree stage. Seven species with high growth and mortality rates exhibited peaks in spatial aggregation at small distances (<100 m) in small trees, but this aggregation disappeared in medium and large trees. In contrast, the other four species with low growth and mortality rates aggregated at large distances (>200 m) throughout the three growth stages in all but one species. Negative associations between different growth stages were observed only for the high-mortality species, suggesting density-dependent mortality. The high-mortality species showed habitat associations with topography, soil type, and the forest regeneration phase after gap formation, whereas the three low-mortality species only had associations with the forest regeneration phase. A randomization procedure revealed that these habitat associations explained little of their spatial aggregation. Our results suggest that the growth strategy has a large effect on the structuring of the spatial distribution of tree species through mortality processes.

Matched MeSH terms: Population Dynamics

A comparison of urban migration in Sarawak and the Philippines

Sutlive V

Urban anthropol, 1977;6(4):355-69.

PMID: 12310786

Matched MeSH terms: Population Dynamics*

On the statistical study of fertility

Sundrum RM

Malay Econ Rev, 1976;21(2):36-48.

PMID: 12310921

Matched MeSH terms: Population Dynamics

Fulltext Implication of single year seasonal sampling to genetic diversity fluctuation that coordinates with oceanographic dynamics in torpedo scads near Taiwan

Su YC, Su SH, Li HY, Wang HY, Lee SC

Sci Rep, 2020 10 08;10(1):16829.

PMID: 33033371 DOI: 10.1038/s41598-020-74025-9

Many fisheries management and conservation plans are based on the genetic structure of organisms in pelagic ecosystems; however, these structures tend to vary over time, particularly in cyclic ocean currents. We performed genetic analyses on the populations of the pelagic fish, Megalaspis cordyla (Osteichthyes: Carangidae) in the area surrounding Taiwan during 2000-2001. Genotyping was performed on M. cordyla collected seasonally around Taiwan as well as specimens collected from Singapore (Malacca strait) and Indonesia (Banda Sea). Gonadosomatic indices (GSI) revealed that M. cordyla does not spawn near Taiwan. Data related to the mitochondrial control region revealed that the samples from Singapore and Indonesia represented two distinct genetic cohorts. Genotyping revealed that during the summer (June-August 2000), the Indonesian variant was dominant in eastern Taiwan (presumably following the Kuroshio Current) and in the Penghu region (following the Kuroshio Branch Current). During the same period, the Singapore genotype was dominant along the western coast of Taiwan (presumably following the South China Sea Current); however, the number dropped during the winter (December-February 2001) under the effects of the China Coast Current. Divergence time estimates indicate that the two genetic cohorts split during the last glacial maximum. Despite the fact that these results are based on sampling from a single year, they demonstrate the importance of seasonal sampling in unravelling the genetic diversity in pelagic ecosystems.

Matched MeSH terms: Population Dynamics*

Fulltext Nutrition and ecosystems in Sarawak: The role of the areca nut

Strickland SS, Duffield AE

Asia Pac J Clin Nutr, 1998 Dec;7(3/4):300-6.

PMID: 24393688

The effects of population pressure on agricultural sustainability in the delicate tropical and subtropical ecosystems have often been thought to explain high prevalence rates of malnutrition in rural South-East Asia. However, recent studies in rural Sarawak suggest that processes of modernisation have resulted in increased variations in energy nutritional status in adults. A contributory factor may be consumption of the areca nut (Malay pinang, of the palm Areca catechu). This is thought to influence energy balance through effects on appetite and resting metabolic rate. Body mass index (BMI, kg/m2) data for 325 Iban men and 438 non-pregnant Iban women, measured in 1990 and again in 1996, have been analysed in relation to areca use, smoking behaviour, socio-economic status, and reported morbidity. Body composition derived from skinfold thickness measurements for 313 men and 382 women was also analysed. The results suggest that use of areca nut is associated with significantly lower age-related increments in BMI and percentage body fat in women after allowing for age, smoking, reported morbidity, and confounding socio-economic factors. Therefore, the impact of recent economic and social development seen in rising prevalences of 'over-nutrition' may be modulated by use of the areca nut.

Matched MeSH terms: Population Dynamics

Singapore's foreign workforce: some reflections on its benefits and costs

Stahl CW

Int Migr Rev, 1984;18(1):37-49.

PMID: 12312927

"This article provides some empirical information pertaining to the benefits and costs of foreign labor to Singapore and subjects to critical analysis some of Pang and Lim's hypotheses concerning the costs of labor importation presented in a previous article.... The article concludes with a discussion of the real cost to Malaysia of Singapore's labor importation policies and its potential for disruption of Malaysia's development plans."

Matched MeSH terms: Population Dynamics

Fulltext Biodiversity, seasonal abundance, and distribution of blackflies (Diptera: Simuliidae) in six different regions of Thailand

Srisuka W, Takaoka H, Otsuka Y, Fukuda M, Thongsahuan S, Taai K, et al.

Parasit Vectors, 2017 Nov 21;10(1):574.

PMID: 29157269 DOI: 10.1186/s13071-017-2492-y

BACKGROUND: Blackflies are an important medical and veterinary group of small blood-sucking insects. Ninety-three blackfly species have been reported in Thailand. However, information on their biodiversity and population dynamics in each region is lacking. The main aim of this study was to assess the regional biodiversity, seasonal abundance and distribution of blackflies in six eco-geographically different regions in the country.

METHODS: Blackfly larvae and pupae were sampled monthly from 58 sites between May 2011 and April 2013. Diversity parameters, seasonal abundance, regional distribution and frequency of species occurrence in stream sites were analyzed.

RESULTS: A total of 19,456 mature larvae representing 57 species, and belonging to six subgenera in the genus Simulium Latreille (s.l.), were found. The five predominant taxa were S. fenestratum (8.6%), the S. asakoae complex (8.3%), S. nakhonense (7.5%), the S. siamense complex (7.4%) and the S. doipuiense complex (6.7%). The most frequent taxa at all sites were the S. asakoae complex (84.5%), followed by S. fenestratum (82.8%), the S. siamense complex (75.9%), S. decuplum (60.3%), S. nakhonense (58.6%) and the S. tani complex (48.3%). The richness of regional species was highest (40 species) in the north and predominated in the cold season. However, blackflies in the south predominated during the hot season. The highest numbers of blackflies collected from central, northeastern, eastern and western regions of the country were observed in the rainy season. Overall, the mean number of blackflies collected across the six regions during the rainy and cold season had no statistically significant difference, but it differed significantly in the hot season.

CONCLUSIONS: Blackflies in Thailand were surveyed in all three seasons across six geographical regions. These findings demonstrated that blackfly communities at each stream site varied with seasonality, and the regional relative abundance of blackflies differed markedly in the hot season. It was also found that the occurrence and distribution of blackflies in each region were associated strongly with elevation.

Matched MeSH terms: Population Dynamics

Taikongs and Calos: the role of middlemen and brokers in Javanese international migration

Spaan E

Int Migr Rev, 1994;28(1):93-113.

PMID: 12287280

"This article discusses international migration from Java in the past and present and the role brokers have played in stimulating this movement. It describes legal and clandestine labor migration to Singapore, Malaysia, and Saudi Arabia, the influence of employment brokers on the process, and the organization of the recruitment networks. The involvement of brokers is crucial but not always beneficial for the migrants. Migrants are dependent on the brokers and risk exploitation. In the case of movement to Saudi Arabia, there is a linkage with religious institutions and the Islamic pilgrimage."

Matched MeSH terms: Population Dynamics

Migrant-native socioeconomic differences in a major metropolitan area of Peninsular Malaysia: its implications on migration policy in a multiethnic society

Soon L

J Dev Areas, 1978;13(1):35-48.

PMID: 12310729

Matched MeSH terms: Population Dynamics*

European eel population at risk of collapse

Sonne C, Peng WX, Alstrup AKO, Lam SS

Science, 2021 Jun 18;372(6548):1271.

PMID: 34140374 DOI: 10.1126/science.abj3359

Matched MeSH terms: Population Dynamics

Displaying publications 41 - 60 of 317 in total