MyMedR

Fulltext Do the majority of Malaysian women have dense breasts on mammogram?

Zulfiqar M, Rohazly I, Rahmah M

Biomed Imaging Interv J, 2011 Apr;7(2):e14.

PMID: 22291859 MyJurnal DOI: 10.2349/biij.7.2.e14

PURPOSE: TO DETERMINE: (i) the mammographic parenchymal patterns in Malaysian women and whether the breasts are dense on mammogram; (ii) the effect of age on breast density; (iii) the effect of parity on breast density; (iv) the difference in breast parenchymal patterns among the major races of women in Malaysia.
METHODS: This was a descriptive cross-sectional study of 1,784 patients (981 Malays, 571 Chinese, 214 Indians and 18 others) who had undergone mammography during the 1-year study period. Majority of women (41.7%) were aged between 51 and 60 years and majority (43%) had 3-4 children. The Tabar classification (Pattern I - V) was used to evaluate breast parenchymal patterns on mammogram. Tabar Pattern I was further divided into 3 sub-groups (Pattern IA, IB, and IC). The different patterns were then grouped into dense (IB, IC, IV, V) and not dense (IA, II, III) breasts. The SPSS package was used for statistical analysis.
RESULTS: Majority (59%) of Malaysian women had dense breasts (Pattern IB 29%, IC 20%, IV 5%, and V 5%) and 41% did not have dense breasts (Pattern IA 28%, II 6%, and III 7%). Age and parity were inversely related to breast density (p < 0.0001). Chinese women (65.7%) had the highest percentage of dense breasts (p = 0.69, odds ratio = 1.22), followed by the Indians (57.2%) and the Malays (50.5%).
CONCLUSION: Majority of women had dense breasts but Pattern IV, which has been associated with increased risk of breast cancer, was seen in only 5% of the women. The breast density reduced steadily with increasing age and parity. There was no statistically significant difference in breast density in the three main races.
KEYWORDS: Mammography; breast density; breast parenchymal patterns

Matched MeSH terms: Continental Population Groups

Fulltext The development and validation of diabetes knowledge questionnaire for the Indigenous population in Malaysia

Ahmad B, Ramadas A, Quek KF

Med J Malaysia, 2010 Dec;65(4):273-6.

PMID: 21901944 MyJurnal

The study's aim was to construct and validate a diabetes mellitus knowledge questionnaire in Bahasa Malaysia for Orang Asli (OA-DKQ). The questionnaire was administered to; case (Orang Asli) and control (administrative staff) groups at baseline and retested two weeks later. The Cronbach's Alpha was used to determine internal consistency and intraclass correlation coefficient (ICC) was used to determine test-retest reliability. The OA-DKQ has an internal consistency of 0.806. These findings suggest the OA-DKQ is an acceptable instrument to assess knowledge and preventive behaviour in Orang Asli (86 words).

Matched MeSH terms: Population Groups

Angiotensin-1 converting enzyme I/D gene polymorphism: scenario in Malaysia

Jayapalan JJ, Muniandy S, Chan SP

Southeast Asian J. Trop. Med. Public Health, 2008 Sep;39(5):917-21.

PMID: 19058590

Discrepancies in angiotensin-1 converting enzyme (ACE) allele genetic susceptibility with disease etiology have been attributed to ethnic differences. We investigated ACE gene polymorphism of the multiethnic Malaysian population by utilizing nested polymerase chain reaction. Allelic frequency of 0.65 and 0.35 for I and D allele, respectively in the pooled population was comparable with other Asian populations. A significant association was found between the Malaysian ethnic groups and ACE I/D genotype. The II genotype was found at higher frequency among the Malays but a greater frequency of DD genotype among Indians.

Matched MeSH terms: Continental Population Groups

Are speech-evoked auditory brainstem response (speech-ABR) outcomes influenced by ethnicity?

Zakaria MN, Jalaei B, Aw CL, Sidek D

Neurol Sci, 2016 Jun;37(6):943-8.

PMID: 26921173 DOI: 10.1007/s10072-016-2522-0

Due to its objective nature, auditory brainstem response (ABR) evoked by complex stimuli has been gaining attention lately. The present study aimed to compare the speech-evoked auditory brainstem response (speech-ABR) results between two ethnic groups: Malay and Chinese. In addition, it was also of interest to compare the speech-ABR outcomes obtained from the present study with the published Caucasian data. Thirty healthy male adults (15 Malay and 15 Chinese) were enrolled in this comparative study. Speech syllable/da/presented at 80 dBnHL was used to record speech-ABR waveforms from the right ear of each subject. Amplitudes and latencies of speech-ABR peaks (V, A, C, D, E, F and O), as well as composite onset measures (V/A duration, V/A amplitude and V/A slope) were computed and analyzed. When the two ethnic groups were compared, all speech-ABR results were not statistically different from each other (p > 0.05). When the data from the present study were compared with the published Caucasian data, most of the statistical analyses were significant (p

Matched MeSH terms: Continental Population Groups

Distribution of cytokine gene polymorphisms in six Orang Asli subgroups in Peninsular Malaysia

Norhalifah HK, Syafawati WU, Che Mat NF, Chambers GK, Edinur HA

Hum Immunol, 2016 Apr;77(4):338-9.

PMID: 26820937 DOI: 10.1016/j.humimm.2016.01.015

Cytokines are involved in immune responses and the pathogenesis of various diseases. Allelic variations within the genes coding for various ∼30kDa cytokine protein/glycoproteins have been reported for many populations and have been the subjects of many ancestry and health analyses. In this study, we typed 22 single nucleotide polymorphisms (SNPs) in 13 cytokine genes of 165 Orang Asli individuals by using sequence specific primer-polymerase chain reaction (SSP-PCR) assay. The volunteers came from all across the Peninsular of Malaysia and belong to six Orang Asli subgroups; Batek, Kensiu, Lanoh, Che Wong, Semai and Orang Kanaq. Here we report our general findings and original genotype data and their associated analyses (Hardy-Weinberg proportions, estimation of allele and haplotype frequencies) can be found in the supplementary files and will be held at Allele Frequency Net Database (AFND).

Matched MeSH terms: Population Groups

Fulltext Parasitic infections among aborigine children at Post Brooke, Kelantan, Malaysia

Rahmah N, Ariff RHT, Abdullah B, Shariman MSM, Nazli MZM, Rizal MZM

Med J Malaysia, 1997 Dec;52(4):412-5.

PMID: 10968120

This study investigated the prevalence of parasitic infections among aborigine children at Post Brooke, Kelantan. Eighty-four formalin-fixed specimens and 78 PVA-fixed specimens were obtained. 79.8% and 35.9% of the samples were positive for helminth ova and protozoa respectively. The parasites detected (single plus mixed infections) were A. lumbricoides (50/84, 59.5%), T. trichiura (35/84, 41.7%), hookworm (5/84, 6.0%), S stercoralis (1/84, 1.2%), G. intestinalis (18/78, 23.1%), E. histolytica (7/78, 9.0%) and E. coli (7/78, 9.0%). Two hundred thick blood film examinations detected only one case of Plasmodium falciparum infection. A high prevalence of intestinal parasitic infections among the children at Post Brooke was demonstrated in this study; thus there is an urgent need to improve the hygiene, education and living standards of this population.

Matched MeSH terms: Continental Population Groups

Fulltext From Third World to Fourth. Third WONCA World Conference on Rural Health in Kuching, Malaysia; Fourth in Calgary

Topps D, Rourke J

Can Fam Physician, 2000 Oct;46:2065.

PMID: 11072589

Matched MeSH terms: Continental Population Groups

The examination of skeletal remains

Sarvesvaran R, Knight BH

Malays J Pathol, 1994 Dec;16(2):117-26.

PMID: 9053560

The finding of skeletal remains is a common happening and the forensic pathologist is frequently called upon to examine the remains. It is theoretically much better for the pathologist to examine the bones at the site before they are disturbed, but this rarely happens, the bones being recovered by the public, workmen or police and brought in a jumbled condition to the pathologist. Using a systematic process of elimination such as that suggested in this paper, the maximum information can be obtained. Even so, it is common for the bones never to be identified and even the length of time the person has been dead remains unknown, due to lack of corroborative information. However, only by repeated and careful examination of a number of skeletal remains, can the pathologist hope to gain any experience. Probably the most important thing to bear in mind is the danger of being too dogmatic, especially about the date of the remains and not to mislead the investigating authorities by over-optimistic opinions.

Matched MeSH terms: Continental Population Groups

[Descriptive epidemiology of urolithiasis]

Kodama H, Ohno Y

Hinyokika Kiyo, 1989 Jun;35(6):923-34.

PMID: 2678977

In this paper, urolithiasis is remarked from the standpoint of descriptive epidemiology, which examines the frequency distribution of a given disease in a population in terms of time, place and personal characteristics with an aim of identifying risk factors or some clues to the etiology. Some descriptive epidemiological features of urolithiasis are summarized. Prevalence rate is around 4% (4-15% in males and 4-8% in females), and incidence rate varies from area to area: 53.2 per 100,000 population in 1975 in Japan, 364 in 1976 in Malaysia, and 540 in 1979 in West Germany. Prevalence and/or incidence rates have, in general, increased in the developed countries since World War II and in the developing countries as well, where upward trends are quite analogous to the trends observed in the nineteenth century in Europe. Recurrence rate, which is much higher in males than in females, ranges from 31% to 75%, depending on the follow-up periods. In the industrialized countries, upper urinary (renal and ureteral) stones account for more than 90% of total stones, which are ordinarily calcium complexes in composition. More common in the developing countries are lower urinary (bladder and urethral) stones, frequently composed of magnesium ammonium phosphate, which indicates a close association with urinary tract infections. Variations in frequency are evident by season and by region within a country. Age and sex differentials in urinary stone formers are substantial: more common in males 30-40 years old in the industrialized countries and in children under 10 years old in the developing countries. Racial differentials are also noted; blacks appear to suffer less frequently than whites. Stone formers experience more frequent episodes of stone formation in their family members, particularly father and brothers, than non-stone formers. These findings on racial differentials and family preponderance suggest the possible relevance of genetic factors in stone formation. Stone formers are more likely to be occupationally sedentary and socially affluent. This observation and differentials by age and sex suggest the probable relevance of lifestyle and environmental factors in stone formation. Epidemiological factors incriminated for stone formation will be discussed in a separate paper.

Matched MeSH terms: Continental Population Groups

Maternal age-specific incidence of Down's syndrome in Malaysian neonates

Boo NY, Hoe TS, Lye MS, Poon PK, Mahani MC

J Singapore Paediatr Soc, 1989;31(3-4):138-42.

PMID: 2534718

Over an 18 month period, 34,495 livebirths were delivered in the Kuala Lumpur Maternity Hospital. 36 neonates (1.044 per 1000 livebirths) had Down's syndrome. The observed rates of Down's syndrome per 1000 livebirths by single year intervals of maternal age were calculated. By using the discontinuous slope model, our study showed that the incidence of Down's syndrome among the Malaysian liveborns increased markedly when the maternal age exceeded 35 years. This study also suggested that the Malay mothers had increased risk of producing babies with Down's syndrome at a later age than the Chinese and the Indians. However, a larger number of babies in each racial group needs to be studied to confirm this.

Matched MeSH terms: Continental Population Groups

The incidence of the three-rooted lower first permanent molar in Malay people

Jones AW

Singapore Dent J, 1980 May;5(1):15-7.

PMID: 6935768

Matched MeSH terms: Continental Population Groups

Forced vital capacity in Malaysian females

Singh R, Singh HJ, Sirisinghe RG

Jpn. J. Physiol., 1992;42(3):407-14.

PMID: 1434102

Spirometry was performed on 614 female subjects ranging in age from 13 to 69 years and comprising all the main races in Malaysia. They were divided into six age categories. Mean forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1) were 2.51 +/- 0.02 and 2.31 +/- 0.02l, respectively. Both FVC and FEV1 correlated negatively with age. Regression analysis revealed an age-related decline in FVC of 220 ml per decade of life. Multiple stepwise regression of the data for the prediction of an individual's FVC above the age of 20 years gave an equation: FVC(l) = 0.0312 (height)-0.022 (age)-1.64. Predicted FVC values derived from equations based on other populations were considerably higher than the observed mean in this study. Our study, therefore, reemphasizes the need to be cautious when applying formulae derived from one population to another. Grossly erroneous conclusions may be reached unless predicted equations for lung-function tests for a given population group are derived from studies based on the same population group.

Matched MeSH terms: Continental Population Groups

Fulltext Infantile hypertrophic pyloric stenosis -- a rarity in Malaysia?

Laidin AZ, Proehoeman R, Mohd Nor M

Med J Malaysia, 1982 Dec;37(4):349-53.

PMID: 7167088

Sixty seven infants were admitted over a 10-year period from 1972 to 1981: 50 males and 17 females. A higher incidence of hypertrophic pyloric stenosis exists in West Malaysia than was previously recognised. However, it remains at less than one tenth of the Western figures. Among the three major races, the condition was commonest in Indians and least in Malays. Most cases presented between the ages of 3 to 8 weeks. Prolonged history of vomiting of more than 3 weeks occurred in 43.3 percent cases, usually among Malay and Indian patients. All patients were treated surgically with 1 death (1.5 percent). The usual postoperative complication was vomiting which occurred in 22.4 percent. Early presentation, adequate preoperative resuscitation and improved anaesthetic techniques can further reduce this mortality and morbidity.

Matched MeSH terms: Continental Population Groups

Fulltext Glucose-6-phosphate dehydrogenase deficiency: a preventable cause of mental retardation

Singh H

Br Med J (Clin Res Ed), 1986 Feb 08;292(6517):397-8.

PMID: 3080188 DOI: 10.1136/bmj.292.6517.397

Over two years cord blood from 27 879 babies was screened for glucose-6-phosphate dehydrogenase (G6PD) deficiency. The overall incidence was 3.1% in boys and 1.6% in girls. Sixty nine babies had severe jaundice (bilirubin concentration greater than 380 mmol/l (20 mg/100 ml], and exchange transfusion was performed. Parents were given written and verbal instructions to avoid herbs and drugs that trigger kernicterus, which reduced the incidence of kernicterus and thereby prevented mental retardation. G6PD deficiency is common in all three ethnic groups (Malays, Chinese, and Indians) in Malaysia and screening is recommended.

Matched MeSH terms: Continental Population Groups

Fulltext Weights and blood pressures of women who attend family planning clinics in Sarawak

Wadsworth GR

Med J Malaysia, 1981 Sep;36(3):148-50.

PMID: 7329371

Matched MeSH terms: Continental Population Groups

Serum haptoglobin levels and types in normal Malaysians

Ganesan J, Wan WP, Lie-Injo LE

Med J Malaysia, 1975 Mar;30(3):163-8.

PMID: 1160674

Matched MeSH terms: Continental Population Groups

Fulltext The Effects of Circadian Rhythm Disruption on Mental Health and Physiological Responses among Shift Workers and General Population

Ahmad M, Md Din NSB, Tharumalay RD, Che Din N, Ibrahim N, Amit N, et al.

Int J Environ Res Public Health, 2020 09 30;17(19).

PMID: 33007836 DOI: 10.3390/ijerph17197156

Background: The effect of circadian disruption on the bio-psychological clock system has been widely studied. However, the mechanism and the association of circadian rhythm disruption with mental health and physiological responses are still unclear. Therefore, this study was conducted to investigate the effects of circadian rhythm disruption on mental health and physiological responses among shift workers and the general population. Methods: A total of 42 subjects participated in this quasi-experimental study. Participants were divided into a group of shift workers (n = 20) and a general population group (n = 22). Polysomnography tests, blood tests (cortisol, triglycerides and glucose), and psychological tests (Abbreviated Profile of Mood States, General Health Questionnaire-28, Working Memory and Processing Speed Indexes of the Wechsler Adult Intelligent Scale (WAIS-IV) were used to examine the effects of circadian rhythm disruption. Results: The results showed a significant relationship between circadian rhythm disruption and mood (r = 0.305, p < 0.05). The findings of this study also indicated that there was a significant effect of circadian rhythm disruption on mood (F(2,40) = 8.89, p < 0.001, η2 =0.182), processing speed (F(2,40) = 9.17, p < 0.001, η2 = 0.186) and working memory (F(2,40) = 4.963, p < 0.01, η2 = 0.11) in shift workers and the general population. Conclusions: Our findings showed that circadian rhythm disruption affects mood and cognitive performance, but it does not significantly affect psychological wellbeing and physiological responses. Future studies are warranted to examine moderator and mediator variables that could influence the circadian rhythm disruption.

Matched MeSH terms: Population Groups

The pattern of intestinal obstruction in Malaysia

Ti TK, Yong NK

Br J Surg, 1976 Dec;63(12):963-5.

PMID: 1009347

This is a review of 261 patients operated for 271 instances of mechanical intestinal obstruction over a 5-year period in a developing country in the tropics. The pattern of intestinal obstruction in Chinese is similar to that in Caucasians, where adhesions account for the largest number of cases. The occurrence in Malays, Indians, Pakistanis and Ceylonese is similar to that in other developing communities where external hernia is commonest while adhesive or tumour obstruction is rare; however, these racial groups do not exhibit the high incidence of intussusception and volvulus found in Africa and India. The operative mortality was 13-9 per cent, which is comparable to that in Western series. The major adverse factors in intestinal obstruction, i.e. extremes of age, associated disease, gangrenous bowel, large bowel obstruction and malignancy, were confirmed. Fluid and electrolyte imbalance was frequent, as in other tropical series, but with intensive preoperative correction it was not an important adverse factor.

Matched MeSH terms: Continental Population Groups

Renal disease in Kuala Lumpur. A study of 100 patients with renal biopsy

Mukherjee AP, Yuen TK

Med J Aust, 1971 Jan 30;1(5):257-60.

PMID: 5545973

Matched MeSH terms: Continental Population Groups

First record of the lace bug genus Eritingis (Drake and Ruhoff) (Hemiptera: Heteroptera: Tingidae) from Japan and Thailand

Souma J

Biodivers Data J, 2021;9:e63188.

PMID: 33958947 DOI: 10.3897/BDJ.9.e63188

Background: The lace bug genus Eritingis Drake and Ruhoff, 1962 is widely distributed in the Australian and Oriental Regions, whereas only a single species, E. recentis (Drake and Poor, 1937), has been recorded from the Oriental Region. To date, E. recentis is known to occur in Indonesia, Malaysia, Papua New Guinea, Singapore and Vietnam, but has not been recorded from Japan and Thailand.

New information: Eritingis and E. recentis are recorded from Japan and Thailand for the first time.

Matched MeSH terms: Continental Population Groups

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