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Fulltext Factors influencing physical inactivity among adults in Negeri Sembilan, Peninsular Malaysia

Tan KL

Med J Malaysia, 2019 Oct;74(5):389-393.
PMID: 31649214

BACKGROUND: Physical inactivity remains the most important modifiable risk factor in preventing a variety of noncommunicable diseases (NCDs) and has been identified to be a risk factor for obesity, heart disease and cancers. This study examined the prevalence and factors associated with physical inactivity among the suburban adult population in Port Dickson district, Negeri Sembilan, Peninsular Malaysia.
MATERIAL AND METHODS: This was a community based cross-sectional study involving 397 adult respondents conducted in February 2016. Data was collected by face-to-face interview using a structured questionnaire. Data regarding socio-demographic factors (age, gender, ethnicity, education level, marital status and monthly income, working hours), current behavioural stage of physical activity and perceived benefits and barriers to physical activity were collected. Physical activity measured using the International Physical Activity Questionnaire (IPAQ) with the cut-off point of less than 600 met-min per week was considered to be physically inactive.
RESULTS: The prevalence of physical inactivity among adult population was 36.3%. Factors significantly associated with physical inactivity included age, gender, marital status, working hours and current behavioural stage of physical activity.
CONCLUSION: Physical inactivity is high among the adult community in Negeri Sembilan district, Peninsular Malaysia and was strongly associated with age, gender, marital status, working hours and current behavioural stage of physical activity. It is important to identify individuals with physical inactivity and its associated factors early as this could severely affect the quality of life of the individuals.
Study site: Six housing areas in Port Dickson District, Negeri Sembilan, Malaysia
Fulltext Depression among the urban poor in Peninsular Malaysia: a community based cross-sectional study

Tan KL, Yadav H

J Health Psychol, 2013 Jan;18(1):121-7.
PMID: 22322990 DOI: 10.1177/1359105311433908

This community based cross-sectional study examined the prevalence and factors associated with depression among urban poor in Peninsular Malaysia. The Patient Health Questionnaire (PHQ-9) was used to determine the presence or absence of depression. The prevalence of depression among the urban poor was 12.3%. Factors significantly associated with depression included respondents under 25 years old, male gender, living in the area for less than four years and those who do not exercise regularly. It is important to identify individuals with depression and its associated factors early because depression can severely affect the quality of life.
Classification of suprabullar pneumatization according to the skull base attachment of the second lamella

Tan KL, Lee WH, Kim JW

Eur Arch Otorhinolaryngol, 2017 Jan;274(1):223-229.
PMID: 27423641 DOI: 10.1007/s00405-016-4201-4

The skull base attachment of the second lamella and suprabullar pneumatization are likely to be consistent landmarks if they are systematically classified. This study aimed to classify the pneumatization pattern according to the second lamella skull base attachment. A total of 202 computed tomography sides of 101 patients who underwent endoscopic sinus surgery were studied. Suprabullar pneumatization was defined as air cells present above the ethmoid bulla between the second and third lamellae. Its pattern was classified according to the air cell number and location as in the frontal cell classification. Type 0 suprabullar pneumatization was defined as no air cells between the ethmoid bulla and skull base; type 1, as a single suprabullar cell; and type 2, as multiple suprabullar cells above the ethmoid bulla. In type 3 pneumatization, the second lamella extended into the frontal sinus forming a frontal bullar cell. Type 2 was the most prevalent (40.1 %), followed by types 1, 3, and 0 (24.3, 23.3, and 12.4 %, respectively). The distance between the second lamella and anterior ethmoid artery was 8.93, 8.30, 8.50, and 11.25 mm in types 0, 1, 2, and 3 pneumatization, respectively. No patients had intraoperative injuries in the anterior ethmoid artery or lateral lamella. The second lamella skull base attachment and suprabullar pneumatization pattern could be systematically classified and be a consistent landmark to identify the frontal sinus opening.
Fulltext Breastfeeding practice in Klang district

Tan KL

Malaysian Journal of Public Health Medicine, 2007;7(2):10-14.
MyJurnal

This was a cross-sectional study which attempt; tu determine the prevalence of breastfeeding practice among mothers in Klcmg district, Malaysia and the association between lyrcastfceding practice with place of delivery and knowledge 011 breastfeeding. Dam collection was conducted by face·t0·face interview using a premuded structured questionnaire amung mothers with fum month old infants only who attended che government clinics in Klang, A total of 508 mothers were recruited ima the study. The study showed 92.9% ever breastfed, 55.1% exclusively lareastfed fur one month and 20.5% exclusively bremtfcd for four months. Malays brcastfed the most, while
Chinese the least. Breastfeeding was more common among mothers with lower education, delivered in government hospitals and with good knowledge on breastfeeding. A high proportion uf mothers in Klang wouki initiate breastfeeding and the [neualence of exclusive breastfeeding was comparable nationally. Breastfeeding was associated with mothers delivered in government hospitals and with good knowledge on breastfeeding. Continued promotional efforts targeted at private hospitals with information on breastfeeding should result in further increase in breastfeeding prevalence.
Study site: Klinik Kesihatan, Kelang district, Selangor, Malaysia
Polycystic kidneys and liver in two siblings with other severe congenital abnormalities

Tan KL, Thomas MA

Med J Malaya, 1970 Sep;25(1):46-9.
PMID: 4249495
Fulltext Knowledge, attitude and practice on breastfeeding in Klang, Malaysia

Tan KL

International Medical Journal Malaysia, 2009;8(1):17-21.
MyJurnal

Introduction: In Klang, a district in the state of Selangor in Peninsular Malaysia, the effects of westernization and urbanization in recent years have had an impact on infant feeding. The objective of this study was to evaluate the practice, knowledge and attitude to breastfeeding and to assess factors associated with breastfeeding among women in Klang, Malaysia. Materials and Methods: A cross-sectional study was carried out between June and October 2006 involving 220 women with infants aged six months from two randomly selected health clinics were selected and interviewed. Data on socio-demographic, infant factors, infant feeding in the first six months of life, knowledge and attitude towards breastfeeding were collected. Results: Exclusive breastfeeding was reported by 32.8%, mixed feeding was reported by 14.5% and infant formula feeding was reported by 52.7% of the respondents. Chinese women were more likely not to practice exclusive breastfeeding compared to Malay women (odds ratio 18.27, 95% CI: 3.95, 84.54) while working women were more likely not to practice exclusive breastfeeding compared to non working women (odds ratio 3.75, 95% CI: 1.64 , 8.55). Positive association with not exclusive breastfeeding included women with high household income and women with male infants. Malaysian women had a positive attitude but work place and short maternity leave had a negative impact on breastfeeding. Conclusion: Women of Chinese ethnicity, working, from high family income and with male infants were less likely to exclusively breastfeed. Adopting facilitatory measures at hospitals and work place could increase the rate of exclusive breastfeeding.
Benchtop Isolation and Characterisation of Small Extracellular Vesicles from Human Mesenchymal Stem Cells

Tan KL, Chia WC, How CW, Tor YS, Show PL, Looi QHD, et al.

Mol Biotechnol, 2021 Sep;63(9):780-791.
PMID: 34061307 DOI: 10.1007/s12033-021-00339-2

The objective of this study is to develop a simple protocol to isolate and characterise small extracellular vesicles (sEVs) from human umbilical cord-derived MSCs (hUC-MSCs). hUC-MSCs were characterised through analysis of morphology, immunophenotyping and multidifferentiation ability. SEVs were successfully isolated by ultrafiltration from the conditioned medium of hUC-MSCs. The sEVs' size distribution, intensity within a specific surface marker population were measured with zetasizer or nanoparticle tracking analysis. The expression of surface and internal markers of sEVs was also assessed by western blotting. Morphology of hUC-MSCs displayed as spindle-shaped, fibroblast-like adherent cells. Phenotypic analysis by flow cytometry revealed that hUC-MSCs expressed MSC surface marker, including CD90, CD73, CD105, CD44 and exhibited the capacity for osteogenic, adipogenic and chondrogenic differentiation. Populations of sEVs with CD9, CD63 and CD81 positive were detected with size distribution in the diameter of 63.2 to 162.5 nm. Typical sEVs biomarkers such as CD9, CD63, CD81, HSP70 and TSG101 were also detected with western blotting. Our study showed that sEVs from hUC-MSCs conditioned medium were successfully isolated and characterised. Downstream application of hUC-MSCs-sEVs will be further explored.
A Multigroup Analysis of Bidirectional Work-Family Enrichment on Family Satisfaction of Hospitality Employees during the Pandemic: Where Religiosity and Marital Status Matter

Tan KL, Sim AKS, Hii ISH, Pidani R, Donohue T

J Psychol, 2023;157(1):48-70.
PMID: 36328776 DOI: 10.1080/00223980.2022.2134278

The COVID-19 pandemic has changed our lives. As many industries face a complete stand-still, it also highlights the need to maintain family satisfaction (FS) during this challenging time, empirical research on achieving this remains scant. This study elucidates how marital status influences employees' religiosity, work-family enrichment (WFE) and FS. Data from 295 employees was examined using the analyzed using the partial least squares method structural equation modeling (PLS-SEM) multigroup analysis. Results suggest that religiosity has a positive significant relationship on the bidirectionality of WFE. The multigroup analysis indicates a significant difference in how single and married employees interpret work-family experience. We extend family-work interfaces by incorporating both the construct of marital status and religiosity. It advances the body of knowledge in understanding work-family interfaces, especially in times of the pandemic.
Mitochondrial Dysfunction in Down Syndrome: From Pathology to Therapy

Tan KL, Lee HC, Cheah PS, Ling KH

Neuroscience, 2023 Feb 10;511:1-12.
PMID: 36496187 DOI: 10.1016/j.neuroscience.2022.12.003

Mitochondrial dysfunctions have been described in Down syndrome (DS) caused by either partial or full trisomy of chromosome 21 (HSA21). Mitochondria play a crucial role in various vital functions in eukaryotic cells, especially in energy production, calcium homeostasis and programmed cell death. The function of mitochondria is primarily regulated by genes encoded in the mitochondrion and nucleus. Many genes on HSA21 are involved in oxidative phosphorylation (OXPHOS) and regulation of mitochondrial functions. This review highlights the HSA21 dosage-sensitive nuclear-encoded mitochondrial genes associated with overexpression-related phenotypes seen in DS. This includes impaired mitochondrial dynamics, structural defects and dysregulated bioenergetic profiles such as OXPHOS deficiency and reduced ATP production. Various therapeutic approaches for modulating energy deficits in DS, effects and molecular mechanism of gene therapy and drugs that exert protective effects through modulation of mitochondrial function and attenuation of oxidative stress in DS cells were discussed. It is prudent that improving DS pathophysiological conditions or quality of life may be feasible by targeting something as simple as cellular mitochondrial biogenesis and function.
Method development and validation for the simultaneous determination of imatinib mesylate and N-desmethyl imatinib using rapid resolution high performance liquid chromatography coupled with UV-detection

Tan KL, Ankathil R, Gan SH

J Chromatogr B Analyt Technol Biomed Life Sci, 2011 Nov 15;879(30):3583-91.
PMID: 22000961 DOI: 10.1016/j.jchromb.2011.09.048

We developed a simple and sensitive method for the simultaneous detection of imatinib mesylate (IM) and its active metabolite, N-desmethyl imatinib (M1), in human serum samples. Separation was successfully achieved using an Agilent(®) ZORBAX Eclipse plus C(18) reversed phase column (50 mm × 2.1 mm, i.d.; 1.8 μm) under isocratic mobile phase conditions consisting of acetonitrile: 0.02 M potassium dihydrogen phosphate with 0.2% triethylamine at pH 3 (25:75, v/v) and ultra-violet detection was achieved at 235 nm. Extraction of the target compounds was completed using 100% cold acetonitrile. Good linearities (r(2)>0.99) for both IM and M1 were achieved for the concentration ranges of 50-1800 ng/mL and 50-360 ng/mL, respectively. The detection limits were 20 ng/mL and 10 ng/mL for M1 and IM, respectively. The intra- and inter-day precisions were less than 1% with percent recoveries of more than 90%. The method was successfully applied to calculate the pharmacokinetic parameters of chronic myeloid leukemia patients receiving imatinib. The method is suitable to be routinely applied for determination of IM and M1 in serum.
Fulltext Inhibition of NEDD8 and FAT10 ligase activities through the degrading enzyme NEDD8 ultimate buster 1: A potential anticancer approach

Tan KL, Pezzella F

Oncol Lett, 2016 Dec;12(6):4287-4296.
PMID: 28101194 DOI: 10.3892/ol.2016.5232

The capabilities of tumour cells to survive through deregulated cell cycles and evade apoptosis are hallmarks of cancer. The ubiquitin-like proteins (UBL) proteasome system is important in regulating cell cycles via signaling proteins. Deregulation of the proteasomal system can lead to uncontrolled cell proliferation. The Skp, Cullin, F-box containing complex (SCF complex) is the predominant E3 ubiquitin ligase, and has diverse substrates. The ubiquitin ligase activity of the SCF complexes requires the conjugation of neural precursor cell expressed, developmentally down-regulated 8 (NEDD8) to cullin proteins. A tumour suppressor and degrading enzyme named NEDD8 ultimate buster 1 (NUB1) is able to recruit HLA-F-adjacent transcript 10 (FAT10)- and NEDD8-conjugated proteins for proteasomal degradation. Ubiquitination is associated with neddylation and FAT10ylation. Although validating the targets of UBLs, including ubiquitin, NEDD8 and FAT10, is challenging, understanding the biological significance of such substrates is an exciting research prospect. This present review discusses the interplay of these UBLs, as well as highlighting their inhibition through NUB1. Knowledge of the mechanisms by which NUB1 is able to downregulate the ubiquitin cascade via NEDD8 conjugation and the FAT10 pathway is essential. This will provide insights into potential cancer therapy that could be used to selectively suppress cancer growth.
Fulltext Characterisation of beta-globin gene mutations in Malaysian children: a strategy for the control of beta-thalassaemia in a developing country

Thong MK, Tan JA, Tan KL, Yap SF

J Trop Pediatr, 2005 Dec;51(6):328-33.
PMID: 15967770 DOI: 10.1093/tropej/fmi052

beta-thalassaemia major, an autosomal recessive hemoglobinopathy, is one of the most common single gene disorders in multi-racial Malaysia. The control of beta-thalassaemia major requires a multi-disciplinary approach that includes population screening, genetic counselling, prenatal diagnosis and the option of termination of affected pregnancies. To achieve this objective, the molecular characterisation of the spectrum of beta-globin gene mutations in each of the affected ethnic groups is required. We studied 88 consecutive unrelated individuals and their respective families with beta-thalassaemia (74 beta-thalassaemia major, 12 HbE-beta-thalassaemia, 2 with HbE homozygotes) and four individuals with beta-thalassaemia trait that contributed a total 180 alleles for study. Using a 2-step molecular diagnostic strategy consisting of amplification refractory mutation system (ARMS) to identify the 8 most common mutations followed by other DNA-based diagnostic techniques, a total of 177 (98.3 per cent) of the 180 beta-thalassaemia alleles were characterised. One out of 91 (1 per cent) of the Chinese alleles, one out of 46 (2.2 per cent) Malay alleles and one out of two Indian alleles remained unknown. A 100 per cent success rate was achieved in studying the Kadazandusun community in this study. A strategy to identify beta-globin gene mutations in Malaysians with beta-thalassaemia is proposed based on this outcome.
Alpha-thalassaemia in association with beta-thalassaemia patients in Malaysia: a study on the co-inheritance of both disorders

Wee YC, Tan KL, Kuldip K, Tai KS, George E, Tan PC, et al.

Community Genet, 2008;11(3):129-34.
PMID: 18376108 DOI: 10.1159/000113874

BACKGROUND/AIMS: Individuals with double heterozygosity for alpha- and beta-thalassaemia and heterozygous beta-thalassaemia show a similar haematological picture. Co-inheritance of alpha- and beta-thalassaemia in both partners may result in pregnancies with either Hb Bart's hydrops foetalis or beta-thalassaemia major, or pregnancies with both disorders.
METHODS: The co-inheritance of alpha-thalassaemia in 322 beta-thalassaemia carriers in Malaysia was studied.
RESULTS: The frequency of alpha-thalassaemia in the beta-thalassaemia carriers was 12.7% (41/322), with a carrier frequency of 7.8% for the SEA deletion, 3.7% for the -alpha(3.7) deletion, 0.9% for Hb Constant Spring and 0.3% for the -alpha(4.2) deletion.
CONCLUSION: Double heterozygosity for alpha- and beta-thalassaemia was confirmed in 5 out of the 41 couples and the risk of the fatal condition Hb Bart's hydrops foetalis was confirmed in two of these couples. Detection of the Southeast Asian (SEA) deletion in the Malaysian Malays in this study confirms that Hb Bart's hydrops foetalis can occur in this ethnic group. Results of this study have provided new information on the frequency and different types of alpha-thalassaemia (--(SEA), -alpha(3.7) and -alpha(4.2) deletions, Hb Constant Spring) in Malaysian beta-thalassaemia carriers.
Heterogeneity in alpha-thalassemia interactions in Malays, Chinese and Indians in Malaysia

Wee YC, Tan KL, Chow TW, Yap SF, Tan JA

J Obstet Gynaecol Res, 2005 Dec;31(6):540-6.
PMID: 16343256 DOI: 10.1111/j.1447-0756.2005.00333.x

AIM: Interactions between different determinants of alpha-thalassemia raises considerable problems, particularly during pregnancies where antenatal diagnosis is necessary. This study aims to determine the different types of deletional alpha-thalassemia and Hemoglobin Constant Spring (HbCS), and their frequency in Malays, Chinese and Indians in Malaysia.
METHODS: DNA from 650 pregnant women from the Antenatal Clinic of the University of Malaya Medical Center in Kuala Lumpur, Malaysia who showed mean cell volume < or =89 fL and/or mean cell hemoglobin < or =28 pg were analyzed for the double alpha-globin gene South-East Asian deletion (--SEA), the -alpha3.7 and -alpha4.2 single alpha-globin gene deletions and HbCS.
RESULTS: One hundred and three (15.8%) of the pregnant women were confirmed as alpha-thalassemia carriers: 25 (3.8%) were alpha-thalassemia-1 carriers with the --SEA/alphaalpha genotype, 64 (9.8%) were heterozygous for the -alpha3.7 rightward deletion (-alpha3.7/alphaalpha), four (0.6%) were heterozygous for the -alpha4.2 leftward deletion (-alpha4.2/alphaalpha), nine (1.4%) were heterozygous for HbCS (alphaCSalpha/alphaalpha) and one (0.2%) was compound heterozygous with the -alpha3.7/alphaCSalpha genotype. The double alpha-globin gene --SEA deletion was significantly higher in the Chinese (15%) compared to the Malays (2.5%) and not detected in the Indians studied. The -alpha3.7 deletion was distributed equally in the three races. HbCS and -alpha4.2 was observed only in the Malays.
CONCLUSION: The data obtained gives a better understanding of the interactions of the different alpha-thalassemia determinants in the different ethnic groups, thus enabling more rapid and specific confirmation of alpha-thalassemia in affected pregnancies where antenatal diagnosis is necessary.
Study site: Antenatal clinic, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
Fulltext Rapid and cost-effective antenatal diagnosis of haemoglobin Bart's hydrops foetalis syndrome using a duplex-polymerase chain reaction

Wee YC, Tan KL, Tan PC, Yap SF, Tan JAMA

Med J Malaysia, 2005 Oct;60(4):447-53.
PMID: 16570706

Haemoglobin Bart's hydrops foetalis syndrome (--SEA/--SEA) is not compatible with life and contributes to a majority of the hydropic foetuses in the Malaysian Chinese alpha-thalassaemia carriers who possess the 2-alpha-gene deletion in cis (--SEA/alphaalpha). A duplex-PCR which simultaneously amplifies a normal 136 bp sequence between the psialpha-alpha2-globin genes and a 730 bp Southeast Asian deletion-specific sequence (--SEA) between the psialpha2-theta1-globin genes was established. The duplex-PCR which detects the --SEA deletion in both chromosomes serves as a rapid and cost-effective confirmatory test in the antenatal diagnosis of Haemoglobin Bart's hydrops foetalis syndrome in Malaysia. In addition, the duplex-PCR is simple to perform as both the normal and deletion-specific alpha-globin gene sequences are amplified in the same PCR reaction.
Fulltext Molecular characterisation of Haemoglobin Constant Spring and Haemoglobin Quong Sze with a Combine-Amplification Refractory Mutation System

Wee YC, Tan KL, Chua KH, George E, Tan JA

Malays J Med Sci, 2009 Jul;16(3):21-8.
PMID: 22589661 MyJurnal

BACKGROUND: The interaction of the non-deletional α(+)-thalassaemia mutations Haemoglobin Constant Spring and Haemoglobin Quong Sze with the Southeast Asian double α-globin gene deletion results in non-deletional Haemoglobin H disease. Accurate detection of non-deletional Haemoglobin H disease, which is associated with severe phenotypes, is necessary as these mutations have been confirmed in the Malaysian population.
METHODS: DNA from two families with Haemoglobin H disease was extracted from EDTA-anticoagulated whole blood and subjected to molecular analysis for α-thalassaemia. A duplex polymerase chain reaction was used to detect the Southeast Asian α-globin gene deletion. Polymerase chain reaction-restriction fragment length polymorphism analysis was then carried out to determine the presence of Haemoglobin Constant Spring and Haemoglobin Quong Sze. A combine-amplification refractory mutation system protocol was optimised and implemented for the rapid and specific molecular characterisation of Haemoglobin Constant Spring and Haemoglobin Quong Sze in a single polymerase chain reaction.
RESULTS AND CONCLUSIONS: The combine-amplification refractory mutation system for Haemoglobin Constant Spring and Haemoglobin Quong Sze, together with the duplex polymerase chain reaction, provides accurate pre- and postnatal diagnosis of non-deletional Haemoglobin H disease and allows detailed genotype analyses using minimal quantities of DNA.
KEYWORDS: Combine-ARMS; Hb Constant Spring; Hb Quong Sze; medical sciences
An immunohistochemical method for the diagnosis of melioidosis

Wong KT, Vadivelu J, Puthucheary SD, Tan KL

Pathology, 1996 May;28(2):188-91.
PMID: 8743829

In order to assess the usefulness of immunohistochemistry in the diagnosis of melioidosis, an infection by Burkholderia pseudomallei, polyclonal antibodies were applied to tissues from known cases of melioidosis and to other infected tissues. Formalin-fixed, paraffin-embedded tissues were stained by a modified immunoperoxidase technique. In autopsy tissues with inflammatory lesions of melioidosis, the cytoplasm of phagocytes and intact bacilli, both intra- and extracellular, were stained very strongly positive. Relatively more focal positive staining was observed in some but not all surgical biopsies from proven cases of melioidosis. In granulomas staining was mainly found in the central necrotic areas, with little staining of peripheral phagocytes. All control materials stained negative. Immunohistochemistry appears to be a useful diagnostic tool in melioidosis.
Fulltext Molecular characterisation and frequency of Ggamma Xmn I polymorphism in Chinese and Malay beta-thalassaemia patients in Malaysia

Wong YC, George E, Tan KL, Yap SF, Chan LL, Tan JA

Malays J Pathol, 2006 Jun;28(1):17-21.
PMID: 17694955

The molecular basis of variable phenotypes in P-thalassaemia patients with identical genotypes has been associated with co-inheritance of alpha-thalassaemia and persistence of HbF production in adult life. The Xmn I restriction site at -158 position of the Ggamma-gene is associated with increased expression of the Ggamma-globin gene and higher production of HbF This study aims to determine the frequency of the digammaferent genotypes of the Ggamma Xmn I polymorphism in P-thalassaemia patients in two ethnic groups in Malaysia. Molecular characterisation and frequency of the Ggamma Xmn I polymorphism were studied in fifty-eight Chinese and forty-nine beta-thalassaemia Malay patients by Xmn I digestion after DNA amplification of a 650 bp sequence. The in-house developed technique did not require further purification or concentration of amplified DNA before restriction enzyme digestion. The cheaper Seakem LE agarose was used instead of Nusieve agarose and distinct well separated bands were observed. Genotyping showed that the most frequent genotype observed in the Malaysian Chinese was homozygosity for the absence of the Xmn I site (-/-) (89.7%). In the Malays, heterozygosity of the Xmn I site (+/-) was most common (63.3%). Homozygosity for the Xmn I site (+/+) was absent in the Chinese, but was confirmed in 8.2% of the Malays. The ratio of the (+) allele (presence of the Xmn I site) to the (-) allele (absence of the Xmn I site)) was higher in the Malays (0.66) compared to the Chinese (0.05). The (+/-) and (+/+) genotypes are more commonly observed in the Malays than the Chinese in Malaysia.
Fulltext Demographic Factors Associated With Public Awareness of Chiropractic in Klang Valley, Malaysia: A Cross-sectional Study

Wong YK, Tan KL, Haneline MT

J Chiropr Med, 2022 Sep;21(3):187-196.
PMID: 36118112 DOI: 10.1016/j.jcm.2022.02.020

OBJECTIVE: The purposes of this study were to determine the public awareness of chiropractic in Klang Valley and to identify sociodemographic factors associated with this awareness.
METHODS: A cross-sectional study with a total of 440 respondents was conducted in medical, chiropractic, pharmacy, and dental health care facilities in Klang Valley. A self-administrated questionnaire was enclosed in an envelope and handed to the participants by the health care facilities' staff. Tables and figures were used to present the descriptive data. Data collected were also analyzed using inferential statistics such as binary logistic regression, odds ratio, and 95% confidence interval. The variables in this study were age, ethnicity, sex, education level, marital status, nationality, employment status, and health status along with awareness of chiropractic.
RESULTS: The respondents' ages ranged from 18 to 81 years, and the mean age was 33.1 years. The majority of respondents were single (52.1%), and 43.1% of respondents were married. Most of the respondents were employed (64.4%), followed by students (14.8%). Among the respondents, 40.2% perceived to have a good health status. Good awareness of chiropractic was 50.2%, whereas the poor awareness of chiropractic was 49.8%. Two sociodemographic factors that were statistically significantly associated with the awareness of chiropractic were ethnicity and employment status, with a P value of
Fulltext Chiropractic Utilization Among Patients in Klang Valley, Malaysia

Wong YK, Tan KL, Haneline MT

J Chiropr Med, 2020 Sep;19(3):159-166.
PMID: 33362438 DOI: 10.1016/j.jcm.2019.10.003

OBJECTIVE: The purpose of this study was to estimate the utilization of chiropractic in Klang Valley, Malaysia.
METHODS: This research was a cross-sectional study conducted in 4 health care centers, namely Klinik Mediviron Sri Rampai, Queck Dental Surgery, International Medical University (IMU) Healthcare Chiropractic Centre, and Be Pharmacy Bandar Sri Permaisuri, in Klang Valley from July to November 2018, with a total of 440 respondents. The data collection was done by the self-administration method using questionnaires that were enclosed in envelopes and passed on to the participants by the center's staff. Descriptive statistics were conducted on the data collected and are presented in tables and figures. The variables were sex, age, nationality, ethnicity, marital status, education level, employment status, and health status with the utilization of chiropractic.
RESULT: There were 186 (42.3%) male and 254 (57.7%) female respondents. The youngest respondent was 18 years old, and the oldest was 81 years old. The median age was 30 years old. Most respondents (97.3%) were Malaysian from a non-Bumiputra (non-Malay) ethnic group. Almost half (47.5%) of the respondents had a bachelor's degree education level. The utilization of chiropractic was 35.9% (95% confidence interval [CI]: 31.4-40.5).
CONCLUSION: The utilization of chiropractic was 35.9%, which was slightly lower than utilization among other traditional and complementary medicine practices in Malaysia.

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