Displaying publications 1 - 20 of 317 in total

Abstract:
Sort:
  1. Statistics and medical research
    Peach P
    Med J Malaya, 1968 Dec;23(2):127-38.
    PMID: 4240823
    Matched MeSH terms: Factor Analysis, Statistical
  2. Measuring quality of life in different cultures: translation of the Functional Living Index for Cancer (FLIC) into Chinese and Malay in Singapore
    Goh CR, Lee KS, Tan TC, Wang TL, Tan CH, Wong J, et al.
    Ann Acad Med Singap, 1996 May;25(3):323-34.
    PMID: 8876896
    Quality-of-life assessment has become an accepted method of evaluation in clinical medicine. The technique is based on a patient's self-assessment of physical, psychological, and social function, as well as the effects of distressing physical symptoms. The most important aspect of quality-of-life assessment is that it brings into focus a patient-centred view of health outcome, which is broader than the physiologic measures which predominate in Western medicine. Strategies for the development and use of assessment questionnaires have evolved over the past 15 years, and numerous questionnaires have been created. Most originate in Western societies, with English as the most common language of development. Adapting such questionnaires for use in other language and cultural settings is an imprecise practice. Language translation and equivalent cultural meaning must both be addressed. This paper reports on the language translation process and results for the Functional Living Index for Cancer (FLIC) as translated into Chinese and Malay in Singapore. We employed a step-wise process beginning with translation/back translation, followed by structured pilot field trials and population sampling. Taped versions of the questionnaire were devised to meet illiteracy problems in the sample population. Paired comparisons of the Chinese and Malay versions of individual questions with their English counterparts show good correlations and similar means most of the time. Factor analysis on a population sample of 246 (112 Chinese, 35 Malay and 98 English speaking) with cancers of minimal, extensive or palliative extent is convergent with that obtained on a North American population. However, a separate analysis of the Chinese questionnaires showed some differences in factor pattern. Specific language and cultural translation difficulties are discussed. Of note is the predicted significant decrease in total FLIC scores with extent of disease within each of the language preference populations, which provides some evidence for the validity for each language version in the Singapore culture(s). Thus, the FLIC translations into Malay and Chinese in Singapore can be considered for use in local trials, subject to ongoing evaluation.
    Matched MeSH terms: Factor Analysis, Statistical
  3. Do the Chinese somatize depression? A cross-cultural study
    Parker G, Cheah YC, Roy K
    Soc Psychiatry Psychiatr Epidemiol, 2001 Jun;36(6):287-93.
    PMID: 11583458
    A large literature argues for the Chinese--whether in mainland China or elsewhere--being highly likely to express depression somatically, leading to predictable detection and diagnostic difficulties. If true, detection might be assisted if a set of somatic proxies of depression were identified, and this was the principal initial objective in mounting this study.
    Matched MeSH terms: Factor Analysis, Statistical
  4. Validation of Rome II criteria for functional gastrointestinal disorders by factor analysis of symptoms in Asian patient sample
    Kwan AC, Bao T, Chakkaphak S, Chang FY, Ke M, Law NM, et al.
    J Gastroenterol Hepatol, 2003 Jul;18(7):796-802.
    PMID: 12795751 DOI: 10.1046/j.1440-1746.2003.03081.x
    BACKGROUND: It has been unclear as to whether the Rome II criteria could be applied to patients in the Asia region with functional gastrointestinal (GI) diseases. The aim of the present study was to determine if symptoms of Asian patients with functional gastrointestinal disorders formed groups which corresponded to the Rome II diagnostic criteria.

    METHODS: A modified English version of Talley's bowel disease questionnaire was developed in collaboration with various research teams in accordance with the Rome II criteria. This instrument was translated into the local languages of the following nine Asian regions: China, Hong Kong, Indonesia, Korea, Malaysia, Singapore, Taiwan, Thailand and Vietnam. From September to December 2001, newly enrolled outpatients attending 14 GI or medical clinics in these regions were invited to complete the questionnaire. From these respondents, patients with functional gastrointestinal disorders fulfilling the '12 weeks out of 12 months' criteria were separated for further analysis. Principal component factor analysis with varimax rotation was used to identify symptom clusters or factors. These factors were compared with the existing classification of functional GI diseases derived from the Rome II criteria.

    RESULTS: Factor analysis of symptoms from 1012 functional GI patients supported the Rome II classification of the following groups of functional GI disorders: diarrhea-predominant irritable bowel syndrome, functional constipation, functional dyspepsia, functional abdominal pain syndrome, functional heartburn, and functional vomiting. Functional diarrhea was combined with functional anorectal disorders, and globus merged with functional dysphagia into one factor. Some of the functional dyspepsia, abdominal bloating and belching symptoms were loaded into one factor.

    CONCLUSIONS: Factor analysis of symptoms from a sample of Asian patients with functional GI disorders partially supported the use of the Rome II classification.
    Matched MeSH terms: Factor Analysis, Statistical
  5. A multitrait-multisource confirmatory factor analytic approach to the construct validity of ADHD and ODD rating scales with Malaysian children
    Gomez R, Burns GL, Walsh JA, Hafetz N
    J Abnorm Child Psychol, 2005 Apr;33(2):241-54.
    PMID: 15839501 DOI: 10.1007/s10802-005-1831-1
    Confirmatory factor analysis (CFA) was used to model a multitrait by multisource matrix to determine the convergent and discriminant validity of measures of attention-deficit hyperactivity disorder (ADHD)-inattention (IN), ADHD-hyperactivity/impulsivity (HI), and oppositional defiant disorder (ODD) in 917 Malaysian elementary school children. The three trait factors were ADHD-IN, ADHDHI, and ODD. The two source factors were parents and teachers. Similar to earlier studies with Australian and Brazilian children, the parent and teacher measures failed to show convergent and discriminant validity with Malaysian children. The study outlines the implications of such strong source effects in ADHD-IN, ADHD-HI, and ODD measures for the use of such parent and teacher scales to study the symptom dimensions.
    Matched MeSH terms: Factor Analysis, Statistical
  6. Reliability and construct validity of the Malay version of the Job Content Questionnaire (JCQ)
    Edimansyah BA, Rusli BN, Naing L, Mazalisah M
    Southeast Asian J. Trop. Med. Public Health, 2006 Mar;37(2):412-6.
    PMID: 17125008
    The JCQ has been shown to be a valid and reliable instrument to assess job stress in many occupational settings worldwide. In Malaysia, both the English and validated Malay versions have been employed in studies of medical professionals and laboratory technicians, respectively. The present study assessed the reliability and construct validity of the Malay version of the JCQ among automotive workers in Malaysia. Fifty workers of a major automotive manufacturer in Kota Bharu, Kelantan consented to participate in the study and were administered the Malay version of the JCQ. Translation (English-Malay) and back translation (Malay-English) of the JCQ was made to ensure the face validity of the questionnaire. Reliability was determined using Cronbach's alpha for internal consistency, whilst construct validity was assessed using exploratory factor analysis (principal component with varimax rotation). The results indicate that the Cronbach's alpha coefficients were acceptable for decision latitude (job control or decision authority) (0.74) and social support (0.79); however, it was slightly lower for psychological job demand (0.61). Exploratory factor analysis showed 3 meaningful common factors that could explain the 3 theoretical dimensions or constructs of Karasek's demand-control-social support model. In conclusion, the results of the validation study suggested that the JCQ scales are reliable and valid for assessing job stress in a population working in the automotive industry. Further analyses are necessary to evaluate the stability and concurrent validity of the JCQ.
    Matched MeSH terms: Factor Analysis, Statistical
  7. Physical and cognitive domains of the Instrumental Activities of Daily Living: validation in a multiethnic population of Asian older adults
    Ng TP, Niti M, Chiam PC, Kua EH
    J Gerontol A Biol Sci Med Sci, 2006 Jul;61(7):726-35.
    PMID: 16870636
    BACKGROUND: We sought to assess the validity of the physical and cognitive domains of Lawton and Brody's Instrumental Activities of Daily Living (IADL) scale and its cross-cultural applicability across ethnic groups in an Asian population of community-living older adults.

    METHODS: Using data from a random population sample of noninstitutionalized Chinese, Malay, and Indian older adults 60 years old and older in Singapore (N = 1072), we modeled the dimensional structure of the 8-item IADL Scale using exploratory and confirmatory factor analyses, and assessed its convergent and divergent validity using known group differences and strengths of association.

    RESULTS: Factor analyses yielded two strong and reliable factors representing underlying physical and cognitive dimensions of IADL. The validity of the model was supported by the pattern of associations of the IADL with age, gender, education, self-reported health status, hospitalization, physical comorbidities, dementia and depression, and Mini-Mental State Examination (MMSE) scores. Notably, cognitive IADL showed a greater total effect on MMSE cognitive performance score than did physical IADL, with the effect of physical IADL on MMSE score mostly explained by cognitive IADL. Reasonably good cross-cultural validity was demonstrated among Chinese, Malays, and Indians, with strongest validity for Indians.

    CONCLUSION: The eight-item IADL Scale has physical and cognitive domains and is cross-culturally applicable. The cognitive IADL domain taps a set of activities directly related to cognitive functioning.

    Matched MeSH terms: Factor Analysis, Statistical
  8. Fulltext Reliability and construct validity of the Malay version of the Job Content Questionnaire (JCQ) among secondary school teachers in Kota Bharu, Kelantan, Malaysia
    Hadi AA, Naing NN, Daud A, Nordin R
    Southeast Asian J. Trop. Med. Public Health, 2006 Nov;37(6):1254-9.
    PMID: 17333785
    This study was conducted to assess the reliability and construct validity of the Malay version of Job Content Questionnaire (JCQ) among secondary school teachers in Kota Bharu, Kelantan. A total of 68 teachers consented to participate in the study and were administered the Malay version of JCQ. Reliability was determined using Cronbach's alpha for internal consistency whilst construct validity was assessed using factor analysis. The results indicated that Cronbach's alpha coefficients revealed decision latitude (0.75), psychological job demand (0.50) and social support (0.84). Factor analysis showed three meaningful common factors that could explain the construct of Karasek's demand-control-social support model. The study suggests the JCQ scales are reliable and valid tools for assessing job stress in school teachers.
    Matched MeSH terms: Factor Analysis, Statistical
  9. Fulltext Reliability and validity of the instrument used in the HELIC (healthy lifestyle in children) study of primary school children's nutrition knowledge, attitude and practice
    Siti Sabariah, B., Zalilah, M.S., Norlijah, O., Normah, H., Maznah, I., Laily, P., et al.
    Malays J Nutr, 2006;12(1):33-44.
    MyJurnal
    The objective of this paper is to report on the reliability and validity of a knowledge, attitude and practice instrument used among young primary school children. The instrument was developed as an evaluation tool in the HELIC study and consisted of 23 knowledge, 11 attitude and 10 practice items. A total of 335 Year 2 students from 4 randomly selected primary schools in Selangor and Wilayah Persekutuan participated in the HELIC study. Students were divided into small groups and an enumerator verbally administered the instrument to each group. Reliability for each construct (knowledge, attitude and practice) was estimated as item to total score correlation and internal consistency (Cronbach's alpha). Construct validity was determined through factor analysis and Pearson correlation. Results indicated that 3 attitude and 3 practice items did not correlate significantly to the total score (p>0.05). However, the deletion of these items did not significantly alter the Cronbach's alpha coefficients. Internal consistency was good for knowledge (a=0.68) but low for attitude (a=0.37) and practice (a=0.36) constructs. Based on factor analysis, 5 factor-solutions emerged for knowledge and 4 factor solutions for attitude and practice. Sufficient variance was obtained for the factors in knowledge (51.7%), attitude (51.2% and practice (51.0%). There were also significant positive correlations among the constructs ( ~ 4 . 0 1 ) . In conclusion, the instrument was valid and reliable, especially for the knowledge construct. Further improvements, particularly on the attitude and practice constructs, are needed in order for the instrument to be an effective assessment or evaluation tool in various settings.
    Matched MeSH terms: Factor Analysis, Statistical
  10. Fulltext Translation, validation and psychometric properties of Bahasa Malaysia version of the Depression Anxiety and Stress Scales (DASS)
    Ramli Musa, Mohd Ariff Fadzil, Zaini Zain
    ASEAN Journal of Psychiatry, 2007;8(2):82-89.
    MyJurnal
    Background: Up to date, there are handful questionnaires that have been validated in Bahasa Malaysia (BM). This study aimed to translate the Depression Anxiety Stress Scales 21-item (DASS-21) and measure its psychometric properties. Objectives: To determine the construct validity and acceptability of the DASS, BM. Methods: Two forward and backward translations were done in BM in accordance to guideline, and its validation was determined by using confirmatory factor analysis. A total of 263 subjects were selected by systematic random sampling to represent Malaysian population for reliability and validity purposes. Results: The BM DASS-21 had very good Cronbach’s alpha values of .84, .74 and .79, respectively, for depression, anxiety and stress. In addition, it had good factor loading values for most items (.39 to .73). Correlations among scales were between .54 and .68. Conclusions: BM DASS-21 is correctly and adequately translated to Bahasa Malaysia with high psychometric properties. Further studies are required to support these findings.
    Matched MeSH terms: Factor Analysis, Statistical
  11. Fulltext Reliability and construct validity of the malay version of the depression anxiety stress scales (dass) in automotive assembly workers in Malaysia
    Edimansyah, B.A., Rusli, B.N., Naing, L.
    Malaysian Journal of Public Health Medicine, 2007;7(1):25-30.
    MyJurnal
    To examine the reliability and construct validity of the Malay Version of the Depression Anxiety Stress Scales (DASS), a validation study was conducted in 184 automotive assembly workers. The internal consistency and construct validity were assessed using Cronbach's alpha coefficient
    and exploratory factor analysis. The Cronbach's alpha coefficients for DASS-Depression, DASS-Anxiety and DASS-Stress were 0.91, 0.88 and j 0.89, respectively, indicating satisfactory internal consistency Exploratory factor analysis showed three meaningful common factors that could
    explain the three theoretical constructs of this instrument. These results suggested that the Malay version DASS is reliable and valid for assessing, the self perceived depression, anxiety and stress among Malaysian automotive workers.
    Study site: Two automotive assembly plants, Pahang, Malaysia
    Matched MeSH terms: Factor Analysis, Statistical
  12. Fulltext Metabolic control in type 2 diabetes correlates weakly with patient adherence to oral hypoglycaemic treatment
    Loke SC, Jong M
    Ann Acad Med Singap, 2008 Jan;37(1):15-20.
    PMID: 18265892
    INTRODUCTION: Patient adherence to treatment is viewed as essential to good metabolic control in diabetes. Our primary objective was to determine if self-reported patient adherence correlated strongly with metabolic control. Our secondary objective was to determine the natural grouping of factors which influence adherence.

    MATERIALS AND METHODS: Data were collected using a questionnaire set with 5-point Likert scales. Primary analysis was done using Spearman's correlation coefficient between self-reported composite adherence scores and HbA1c. Secondary analysis was done using exploratory factor analysis.

    RESULTS: The primary analysis suggests that patient adherence to the treatment regime is weakly correlated to metabolic control. Calculated Spearman's rho was 0.197, with a two-tailed P value of 0.027. The secondary analysis demonstrates the natural clustering of factors that influence patient adherence to treatment. A 6-factor solution was found to account for most of the variance in the data. We also found that feelings of frustration, anxiety, and depression were associated with a lack of knowledge about diabetes treatment. In addition, belief in traditional medicine correlated strongly with ethnicity.

    CONCLUSION: A good treatment regime for type 2 diabetes mellitus influences metabolic outcome far more than patient adherence.
    Matched MeSH terms: Factor Analysis, Statistical
  13. Beliefs about schizophrenia and its treatment in Kota Kinabalu, Malaysia
    Swami V, Furnham A, Kannan K, Sinniah D
    Int J Soc Psychiatry, 2008 Mar;54(2):164-79.
    PMID: 18488409
    Lay beliefs about schizophrenia have been extensively studied in cross-cultural settings, but research on ethnic differences are currently lacking.
    Matched MeSH terms: Factor Analysis, Statistical
  14. The female sexual response cycle: do Malaysian women conform to the circular model?
    Sidi H, Naing L, Midin M, Nik Jaafar NR
    J Sex Med, 2008 Oct;5(10):2359-66.
    PMID: 18086161
    The concept of a sexual response cycle (SRC) for women has gained interest lately with the reintroduction of terms with new definitions and a new model for the sexual response, especially the Basson's circular model.
    Matched MeSH terms: Factor Analysis, Statistical
  15. Fulltext Cross-Cultural Adaptation And Validation Of The Bahasa Malaysia Version Of The Eating Disorder Examination Questionnaire (Ede-Q)
    Ramli, M., Jamaiyah, H., Noor Azimah, M., Khairani, O., Adam, B.
    Malaysian Journal of Psychiatry, 2008;17(2):1-8.
    MyJurnal
    Introduction: As eating disorders such as anorexia nervosa and others are generally becoming more prevalent, it is essential to have a culturally accepted and locally validated questionnaire that is able to detect abnormal eating habits. Objective: To translate the Eating Disorders Examination Questionnaire (EDE-Q) into Bahasa Malaysia (BM) and to determine the construct validity, reliability and other psychometric properties of the BM version. Method: Two parallel forward and backward translations were done in BM in accordance to guideline. Its validation was determined by using confirmatory factor analysis among 298 secondary school children. Results: The BM EDE-Q had very good internal consistency with global Cronbach’s alpha value of 0.879. For construct validity, majority of the items managed to produce values of more than 0.4 for confirmatory factor analysis with four unforced distinct factors detected. Conclusions: Analyses of reliability and validity of this BM version of EDE-Q yielded satisfactory results. The BM version produced in this study had good psychometric properties and it is applicable to the Malaysian population. Findings indicated that cultural factors in eating habits certainly influences the effort to adapt the questionnaire within a Malaysian setting.
    Matched MeSH terms: Factor Analysis, Statistical
  16. Fulltext Validation of the Bahasa Malaysia version of the Coping Inventory for Stressful Situation
    Ramli, M., Mohd Ariff, F., Khalid, Y., Rosnani, S.
    Malaysian Journal of Psychiatry, 2008;17(2):1-8.
    MyJurnal
    Introduction: There is an appealing need to have a validated Bahasa Malaysia (BM) questionnaire that is able to gauge stress coping styles among Malaysian population. A culturally accepted questionnaire will generate further research in the aspect of stress coping patterns in the Malaysia population. Objective: To translate the Coping Inventory for Stressful Situations (CISS) questionnaire into BM and to determine the construct validity, reliability and other psychometric properties of the translated BM version of the English CISS 48-item. Method: Two parallel forward and backward translations were done in BM in accordance to guideline and its validation was determined by using confirmatory factor analysis among 200 Malaysian subjects. Results: The BM CISS had very good Cronbach’s alpha values, 0.91, 0.89 and 0.85 respectively for Task-, Emotional- and Avoidance-oriented. The overall Cronbach’s alpha was 0.91. It also had good factor loading for most of its items where 44 items out of 48 had Confirmatory Factor Analysis values of more than 4.0. Conclusions: BM CISS had been adequately and correctly translated into Bahasa Malaysia with high psychometric properties. Minimal readjustment may be required in a few of its items to obtain excellent results.
    Matched MeSH terms: Factor Analysis, Statistical
  17. Fulltext Development of multi-dimensional body image scale for malaysian female adolescents
    Chin YS, Taib MN, Shariff ZM, Khor GL
    Nutr Res Pract, 2008;2(2):85-92.
    PMID: 20126371 DOI: 10.4162/nrp.2008.2.2.85
    The present study was conducted to develop a Multi-dimensional Body Image Scale for Malaysian female adolescents. Data were collected among 328 female adolescents from a secondary school in Kuantan district, state of Pahang, Malaysia by using a self-administered questionnaire and anthropometric measurements. The self-administered questionnaire comprised multiple measures of body image, Eating Attitude Test (EAT-26; Garner & Garfinkel, 1979) and Rosenberg Self-esteem Inventory (Rosenberg, 1965). The 152 items from selected multiple measures of body image were examined through factor analysis and for internal consistency. Correlations between Multi-dimensional Body Image Scale and body mass index (BMI), risk of eating disorders and self-esteem were assessed for construct validity. A seven factor model of a 62-item Multi-dimensional Body Image Scale for Malaysian female adolescents with construct validity and good internal consistency was developed. The scale encompasses 1) preoccupation with thinness and dieting behavior, 2) appearance and body satisfaction, 3) body importance, 4) muscle increasing behavior, 5) extreme dieting behavior, 6) appearance importance, and 7) perception of size and shape dimensions. Besides, a multidimensional body image composite score was proposed to screen negative body image risk in female adolescents. The result found body image was correlated with BMI, risk of eating disorders and self-esteem in female adolescents. In short, the present study supports a multi-dimensional concept for body image and provides a new insight into its multi-dimensionality in Malaysian female adolescents with preliminary validity and reliability of the scale. The Multi-dimensional Body Image Scale can be used to identify female adolescents who are potentially at risk of developing body image disturbance through future intervention programs.
    Matched MeSH terms: Factor Analysis, Statistical
  18. An examination of the factor structure of the Sociocultural Attitudes Towards Appearance Questionnaire-3 in Malaysia
    Swami V
    Body Image, 2009 Mar;6(2):129-32.
    PMID: 19249260 DOI: 10.1016/j.bodyim.2009.01.003
    The present study examined the factor structure of a Malay translation of the Sociocultural Attitudes Towards Appearance Questionnaire-3 among a community sample of 554 Malaysian women. Results of an exploratory factor analysis revealed the existence of four factors, two of which (Information and Internalization-Athlete) mirrored those found among Western samples. An additional factor was an amalgamation of two factors reported in the West, namely Pressure and Internalization-General. A fourth factor consisted of six items, four of which cross-loaded onto previous factors, and was consequently dropped from analyses. Cronbach's alpha coefficients for the three retained factors were all above .82, and the three factors were significantly correlated with each other and with participants' body mass index. The results of this study stress the need for locally developed scales in the study of body image and a shift away from reliance on scales developed in the West.
    Matched MeSH terms: Factor Analysis, Statistical
  19. Fulltext The application of factor analysis to identify sources in Klang Valley aerosol
    Shamsiah A. Rahman, Mohd Suhaimi Hamzah, Abdul Khalik Wood, Md Suhaimi Elias, Nazaratul Ashifa Abdullah Salim, Ezwiza Sanuri
    Journal of Nuclear and Related Technologies, 2009;2009(1):288-296.
    MyJurnal
    Chemical composition of fine (PM2.5) aerosol samples collected for the 5 years period (2001- 2005) using Gent Stacked filter unit sampler at Klang Valley (3 o 10 ’ 30 ’’ N, 101 o 43 ’ 24 ’’ E) were analysed using Neutron Activation Analysis (NAA) and Proton Induced X-ray Emission (PIXE). Results of the study show that the major component of the fine aerosol was black carbon and sulfur with the mass concentration ranged from 4.4 - 6.7µg m -3 and 1.2 - 1.9µg m -3 , respectively. The total fine aerosol mass concentration were in the ranged of 25 - 31µg m -3 with the reconstructed mass was about 50% as relative to the gravimetric mass. Statistical method, factor analysis with varimax approach has been applied to the aerosol composition data for the fingerprint identification. The analysis produces five identified fingerprint represent soil, industry, motor vehicles/biomass burning and Pb and Zn sources. There is also an unidentified source that could be related to unknown industrial activities.
    Matched MeSH terms: Factor Analysis, Statistical
  20. Fulltext Perceptions and acceptance of ‘belacan’ in Malaysian dishes
    Leong, Q.L., Ab Karim, S., Selamat, J., Mohd Adzahan, N., Karim, R., Rosita, J.
    International Food Research Journal, 2009;16(4):539-546.
    MyJurnal
    This study aimed to analyze consumers’ perceptions and acceptance toward ‘belacan’. Results
    showed internal reliability of above 0.7 for sections analyzed. Factor analysis found two underlying factors in the section designed to examine consumers’ perceptions. The overall consumers’ perception had a positive and moderate correlation with their acceptance and was significant at .01. Results also showed that ‘belacan’ consumption level was relatively frequent and well accepted by all races in Malaysia. The findings of the study would be noteworthy to the fishery industry and the small and medium industry (SME) in Malaysia in meeting consumers’ needs.
    Matched MeSH terms: Factor Analysis, Statistical
Related Terms
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links