Displaying publications 21 - 40 of 4459 in total

Abstract:
Sort:
  1. HIV type 1 subtypes in Malaysia, determined with serologic assays: 1992-1996
    Beyrer C, Vancott TC, Peng NK, Artenstein A, Duriasamy G, Nagaratnam M, et al.
    AIDS Res Hum Retroviruses, 1998 Dec 20;14(18):1687-91.
    PMID: 9870323
    We investigated the molecular epidemiology of HIV-1 subtypes in Malaysia among injecting drug users (IDUs) and sexual transmission risk groups, using serologic and genetic techniques. Frozen sera collected at a general hospital, a blood bank, several drug treatment centers, and an STD clinic in Kuala Lumpur, between 1992 and 1996, were investigated retrospectively. V3 peptide serotyping and monomeric gp120 capture serotyping were used to study 89 known HIV-1-infected subjects. The methods differentiate subtypes B, E, and C. V3 peptide and gp120 capture results were comparable. No subtype C-specific reactive sera were found; one specimen was dually reactive for subtypes C and B, using the V3 peptide ELISA; and four were durally reactive for subtypes E and C using this assay. Genotypic analysis of HIV-1 gag RNA in serum was done on a subset of subjects and confirmed serologic findings. HIV-1 subtypes differed significantly by risk category: of 53 IDUs, 29 (55%) were infected with subtype B and 19 (36%) were infected with subtype E, 3 (6%) were dually reactive, and 2 (4%) were not typable. Of 36 persons with heterosexual risks, 29 (81%) were infected with subtype E, 5 (14%) were infected with subtype B, and 2 (5%) were not typable. Persons with IDU risks were significantly more likely to be infected with subtype B than were those with sexual risks (OR 5.89; 95% CI, 1.94-18.54; p < 0.001). Subtypes B and E of HIV-1 appear to predominate in Malaysia; subtype B was more prevalent among IDUs; subtype E was more prevalent among all other groups. These results may have important HIV-1 vaccine implications.
    Matched MeSH terms: Risk Factors
  2. Fulltext HIV incidence in Asia: a review of available data and assessment of the epidemic
    Dokubo EK, Kim AA, Le LV, Nadol PJ, Prybylski D, Wolfe MI
    AIDS Rev, 2013 Apr-Jun;15(2):67-76.
    PMID: 23681434
    Rates of new HIV infections in Asia are poorly characterized, likely resulting in knowledge gaps about infection trends and the most important areas to target for interventions. We conducted a systematic review of peer-reviewed English language publications and conference abstracts on HIV incidence in thirteen countries - Bangladesh, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Taiwan, Thailand, and Vietnam. We obtained data on HIV incidence rate, incidence estimation method, population, and risk factors for incident infection. Our search yielded 338 unique incidence estimates from 70 published articles and 41 conference abstracts for eight countries. A total of 138 (41%) were obtained from prospective cohort studies and 106 (31%) were from antibody-based tests for recent infection. High HIV incidence rates were observed among commercial sex workers (0.4-27.8 per 100 person-years), people who inject drugs (0.0-43.6 per 100 person-years) and men who have sex with men (0.7-15.0 per 100 person-years). Risk factors for incident HIV infection include brothel-based sex work and cervicitis among commercial sex workers; young age, frequent injection use and sharing needles or syringes among people who inject drugs; multiple male sexual partners, receptive anal intercourse and syphilis infection among men who have sex with men. In the countries with available data, incidence rates were highest in key populations and varied widely by incidence estimation method. Established surveillance systems that routinely monitor trends in HIV incidence are needed to inform prevention planning, prioritize resources, measure impact, and improve the HIV response in Asia.
    Matched MeSH terms: Risk Factors
  3. Indonesia and Vietnam may face AIDS pandemic
    AIDS Wkly Plus, 1996 Oct 28.
    PMID: 12320487
    Matched MeSH terms: Risk Factors*
  4. Epidemiology of abdominal aortic aneurysm in an Asian population
    Yii MK
    ANZ J Surg, 2003 Jun;73(6):393-5.
    PMID: 12801335
    Abdominal aortic aneurysms (AAA) are common in the Caucasian population. Apart from reported differences in the occurrence of AAA in the black and white populations, there are few studies on the incidence of AAA in the Asian population.
    Matched MeSH terms: Risk Factors
  5. Opportunistic use of radiological measures of visceral adiposity for assessment of risk of colorectal adenoma
    Ng ZQ, Wijesuriya R, Misur P, Tan JH, Moe KS, Theophilus M
    ANZ J Surg, 2020 11;90(11):2298-2303.
    PMID: 32501646 DOI: 10.1111/ans.16063
    BACKGROUND: Recent evidence suggested that radiological measures of visceral adiposity are a better tool for risk assessment of colorectal adenomas. The aim of this study was to investigate the association of visceral adiposity with the development of colorectal adenomas.

    METHODS: A retrospective review of all cases of computed tomography-confirmed acute diverticulitis from November 2015 to April 2018 was performed. Data collated included basic demographics, computed tomography scan results (uncomplicated versus complicated diverticulitis), treatment modality (conservative versus intervention), outcomes and follow-up colonoscopy results within 12 months of presentation. The patients were divided into no adenoma (A) and adenoma (B) groups. Visceral fat area (VFA), subcutaneous fat area (SFA) and VFA/SFA ratio (V/S) were measured at L4/L5 level. Statistical analysis was performed to evaluation the association of VFA, SFA, V/S and different thresholds with the risk of adenoma formation.

    RESULTS: A total of 169 patients were included in this study (A:B = 123:46). The mean ± standard deviation for VFA was higher in group B (201 ± 87 cm2 versus 176 ± 79 cm2 ) with a trend towards statistical significance (P = 0.08). There was no difference in SFA and V/S in both groups. When the VFA >200 cm2 was analysed, it was associated with a threefold risk of adenoma formation (odds ratio 2.7, 95% confidence interval 1.35-5.50, P = 0.006). Subgroup analysis of gender with VFA, SFA and V/S found that males have a significantly higher VFA in group B (220.0 ± 95.2 cm2 versus 187.3 ± 69.2 cm2 ; P = 0.05).

    CONCLUSIONS: The radiological measurement of visceral adiposity is a useful tool for opportunistic assessment of risk of colorectal adenoma.

    Matched MeSH terms: Risk Factors
  6. Genetic polymorphisms of TP53-binding protein 1 (TP53BP1) gene and association with breast cancer risk
    Naidu R, Har YC, Taib NA
    APMIS, 2011 Jul;119(7):460-7.
    PMID: 21635553 DOI: 10.1111/j.1600-0463.2011.02753.x
    In the present study, we evaluated the association between the TP53BP1 Glu353Asp and T-885G polymorphisms and breast cancer risk as well as with the clinicopathological characteristics of the patients. Genotyping of these polymorphisms was performed on 387 breast cancer patients and 252 normal and healthy women who had no history of any malignancy using PCR-RFLP method in a hospital-based Malaysian population. Breast cancer risk was not observed among women who were heterozygous (OR(adj) = 0.887; 95% CI, 0.632-1.245) or homozygous (OR(adj) = 1.083; 95% CI, 0.595-1.969) for Asp allele, and those carriers of Asp allele (OR(adj) = 0.979; 95% CI, 0.771-1.243). Similarly, women who were TG heterozygotes (OR(adj) = 1.181; 95% CI, 0.842-1.658) or GG homozygotes (OR(adj) = 1.362; 95% CI, 0.746-2.486) and carriers of G allele (OR(adj) = 1.147; 95% CI, 0.903-1.458) were not associated with increased risk of breast cancer. Asp allele genotype was significantly associated with ER negativity (p = 0.0015) and poorly differentiated tumours (p = 0.008), but G allele genotype was not associated with the clinicopathological characteristics. In conclusion, Glu353Asp and T-885G polymorphic variants might not have an influence on breast cancer risk, thus might not be potential candidates for cancer susceptibility. Glu353Asp variant might be associated with tumour aggressiveness as defined by its association with ER negativity and poorly differentiated tumours.
    Matched MeSH terms: Risk Factors
  7. Fulltext The role of treating nicotine addiction prior to treatment of periodontal diseases
    Nurul Asyikin Yahya, Amer Siddiq Amer Nordin
    ASEAN Journal of Psychiatry, 2011;12(1):0-0.
    MyJurnal
    Introduction and Objective: Tobacco use is a significant risk factor for oral diseases. Periodontal disease has been known to be associated with tobacco use for over twenty years. Despite that, dentists and particularly periodontist does not include tobacco use cessation as part of their initial treatment in treating periodontal disease or placing implants in patients who use tobacco. The increase in prevalence and severity of periodontitis among smokers
    cannot be explained by differences in the amount of plaque between smokers and nonsmokers. A possible explanation is that smoking may alter the quality of the flora. Dental professionals also have a crucial role to play in tobacco cessation counseling, particularly for patients with chronic periodontitis. More patients will be affected by periodontitis than will ever be affected by oral cancer. Methods and Results: Reviews of literatures were
    done on a clearly formulated question on the need of smoking cessation intervention to increase positive outcome of treatment on periodontal disease. Conclusion: Various epidemiological studies strongly suggest that tobacco use cessation is beneficial to patients following periodontal treatments for a better outcome.
    Matched MeSH terms: Risk Factors
  8. Fulltext Obesity among patients with schizophrenia, attending outpatient psychiatric clinic, Hospital Universiti Kebangsaan Malaysia
    Salmi Razali, Ainsah Omar, Osman Che Bakar, Shamsul Azman Shah
    ASEAN Journal of Psychiatry, 2007;8(2):90-96.
    MyJurnal
    Objective: This study aimed to determine the prevalence of obesity among patients with schizophrenia and its association with the demographic profile. Methods: This is a cross sectional study. Subjects were selected using systematic sampling. Patients attending the out patient psychiatric clinic, Hospital Universiti Kebangsaan Malaysia, who fulfilled the criteria and able to give consent were included in this study. Diagnosis of schizophrenia was made using Structured Clinical Interview (SCID) for DSM-IV. Demographic profiles of the patients were obtained and anthropometric measurements were measured and classified according to Body Mass Index (BMI) and Waist Circumference (WC) of Asian population. Results: A total of 97 patients were included. The prevalence of overweight (BMI: 23.0- 27.4 kg/m2) was 39.2% (n=38), and the prevalence of obesity (BMI: >27.0 kg/m2) was 35.1% (n=34). BMI was higher among non-Chinese (Malay and Indian, p=.03) and those who had low total household income (p=.03). Sixty-two patients (63.9%) had high WC, which was associated with male (p=.003) and non-Chinese (p=.03). Conclusions: Obesity is highly prevalent among patients with schizophrenia. The risk factors for obesity include male, non-Chinese and those with low total income. The high WC among non-Chinese and male patients suggests that they are at a higher risk of developing obesity-related physical illnesses. These findings support that obesity is a common critical issue among schizophrenic patients, and it warrants serious clinical interventions.

    Study site: Psychiatric clinic, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM)
    Matched MeSH terms: Risk Factors
  9. Fulltext The first methadone programme in Malaysia: overcoming obstacles and achieving the impossible
    Gill, Jesjeet Singh, Ahmad Hatim Sulaiman, Mohd Hussain Habil
    ASEAN Journal of Psychiatry, 2007;8(2):64-70.
    MyJurnal
    Objectives: To determine the best possible programme that suits our local setting, to determine the average dose required, and to determine possible problems that can arise from implementing such a programme locally and how best to address them. Methods: The inclusion criteria were those above 18, a positive urine test, the presence of a supportive carer and willing to engage in the programme. Methadone was initiated and observations relating to dose, adverse events, relationship with carers, work performance, crime and high risk behaviours were monitored for 18 weeks. Results: Two thirds of the 45 subjects completed the trial over the 18 week period. No significant adverse events occurred and improvement in relationship with carers and work performance were noted with reduction in crime and high risk behaviours. Conclusion: Methadone is a safe and effective drug that can be used in the local Malaysian setting.
    Matched MeSH terms: Risk-Taking
  10. Fulltext The prevalence of genital arousal disorder during sexual activity and potential risk factors that may impair genital arousal among Malaysian women
    Hatta Sidi, Marhani Midin, Sharifah Ezat Wan Puteh, Norni Abdullah
    ASEAN Journal of Psychiatry, 2007;8(2):97-105.
    MyJurnal
    Objective: To investigate the prevalence of genital arousal disorder and the potential risk
    factors that may impair genital arousal among women at a primary care setting in Malaysia.
    Methods: A validated questionnaire for sexual function was used to assess genital arousal
    function. A total of 230 married women aged 18–70 years old participated in this study. Their sociodemographic and marital profiles were compared between those who had genital arousal disorder and those who did not. The risk factors were examined. Results: The prevalence of genital arousal disorder in the primary care population was 50.4% (116/230). Women with genital arousal disorder were found to be significantly higher in groups of more than 45 years old (p55) (p=.001), those having 4 children or more (p=.028), those having less sexual intercourse (less than 1–2 times a week) (p=.001), and those at post-menopausal state (p=.002). There was no significant difference between these two groups in term of salary (p=.29), suffering from medical problems (p=.32), dysmenorrhea (p=.95), menarche (p=.5) and hormonal replacement therapy (p=.6). Conclusion: Women with infrequent sexual intercourse are less likely to be sexually aroused (OR=0.29, 95% CI: 0.11-0.74).
    Matched MeSH terms: Risk Factors
  11. Fulltext Anorexia nervosa with comorbid borderline personality disorder, major depression and homosexuality in a young Malay man: a case report
    Osman Che Bakar, Ainsah Omar
    ASEAN Journal of Psychiatry, 2008;9(2):126-128.
    MyJurnal
    We aimed to report the first case of anorexia nervosa in a young Malaysian Malay homosexual man with underlying borderline personality disorder and major depression. Patient and parents were interviewed. The Structured Clinical Interview for DSM IV was used to generate Axis-I diagnosis. The Hamilton Depressive Rating Scale was used to assess the severity of depression. His parents had marital discord. His father was overinvolved. Regarding anorexia nervosa, he had 163 cm height, 46kg weight and a body mass index (BMI) of 17 kg/m2. His four limbs had multiple scratch marks. Laboratory test results showed anemia, leukocytosis and hypoalbuminemia. Family pathology, borderline personality disorder and homosexuality could be the risk factors of anorexia nervosa in this patient.
    Matched MeSH terms: Risk Factors
  12. Fulltext Early readmissions and associated socio-demographic, clinical factors in a psychiatric hospital, Malaysia
    Lee, Wen Jih, Ong, Lieh Yan, Koay, Siew Ni, Kwan, Zuan Er
    ASEAN Journal of Psychiatry, 2017;18(1):0-0.
    MyJurnal
    Objective: The main aim of this study is to assess the prevalence of early
    readmissions to inpatient care in Hospital Bahagia Ulu Kinta and the associated
    socio-demographic and clinical factors.

    Methods: This is an observational study
    for all patients with readmissions within 3 months from the last discharge, dated
    from 1 January 2013 to 31 December 2013. Related socio-demographic and
    clinical details are obtained from the medical records and compared between the
    patients who were readmitted within the first month after discharge to those who
    were readmitted later in the second and third month.

    Results: Total of 149
    records of patients who were readmitted within 3 months of last discharge were
    analyzed. Majority of them were from the same state of Perak (83.9%), male
    (74.5%), single (71.1%), unemployed (85.9%), taken care by family (75.2%),
    achieved secondary education level (59.7%) with mean age of 37.89 years (SD
    11.53). They were discharged for a mean of 32.52 days (SD 26.48) before
    readmission with a mean duration of 72.98 days in the previous admission, and
    mean previous admissions of 10.17 times. 69.8% of the patients were treated for
    psychotic disorders and the main reason for readmission was relapse (84.6%).
    Up to 34.2% of the patients reported to have substance abuse while 25.5% had
    medical co-morbidities. Most of the patients (63.8%) were not compliant to the
    treatment from the last discharge. Socioeconomic and clinical factors did not
    show statistical significance when the readmissions within the first month after
    discharge were compared to those who were admitted later at the second and
    third month.

    Conclusions: Due to limitations, further studies need to be done to
    identify risk factors associated with readmissions and adequate measures need to
    be taken to prevent these readmissions.
    Matched MeSH terms: Risk Factors
  13. Fulltext Risk assessment for living modified organisms
    S.L. Tan
    ASM Science Journal, 2013;7(2):129-138.
    MyJurnal
    The paper seeks to assuage the fears and worries over living modified organisms (LMOs). It describes how any research carried out on LMOs as well as any release activity on LMOs for public use in Malaysia is controlled by the Biosafety Act 2007. Stringent risk assessment of the LMO and its product/s is carried out to eradicate or minimize the negative effects of these on animal and human health, and to biological diversity and the environment. In contrast, no such risk assessment is carried out on introduced exotic species, or on the products of other types of technology, with the exception of pharmaceuticals. Examples are given comparing risk assessment on LMOs and exotic species.
    Matched MeSH terms: Risk Assessment
  14. An Observational Study of Dyspnea in Emergency Departments: The Asia, Australia, and New Zealand Dyspnea in Emergency Departments Study (AANZDEM)
    Kelly AM, Keijzers G, Klim S, Graham CA, Craig S, Kuan WS, et al.
    Acad Emerg Med, 2017 Mar;24(3):328-336.
    PMID: 27743490 DOI: 10.1111/acem.13118
    OBJECTIVES: The objective was to describe the epidemiology of dyspnea presenting to emergency departments (EDs) in the Asia-Pacific region, to understand how it is investigated and treated and its outcome.

    METHODS: Prospective interrupted time series cohort study conducted at three time points in EDs in Australia, New Zealand, Singapore, Hong Kong, and Malaysia of adult patients presenting to the ED with dyspnea as a main symptom. Data were collected over three 72-hour periods and included demographics, comorbidities, mode of arrival, usual medications, prehospital treatment, initial assessment, ED investigations, treatment in the ED, ED diagnosis, disposition from ED, in-hospital outcome, and final hospital diagnosis. The primary outcomes of interest are the epidemiology, investigation, treatment, and outcome of patients presenting to ED with dyspnea.

    RESULTS: A total of 3,044 patients were studied. Patients with dyspnea made up 5.2% (3,105/60,059, 95% confidence interval [CI] = 5.0% to 5.4%) of ED presentations, 11.4% of ward admissions (1,956/17,184, 95% CI = 10.9% to 11.9%), and 19.9% of intensive care unit (ICU) admissions (104/523, 95% CI = 16.7% to 23.5%). The most common diagnoses were lower respiratory tract infection (20.2%), heart failure (14.9%), chronic obstructive pulmonary disease (13.6%), and asthma (12.7%). Hospital ward admission was required for 64% of patients (95% CI = 62% to 66%) with 3.3% (95% CI = 2.8% to 4.1%) requiring ICU admission. In-hospital mortality was 6% (95% CI = 5.0% to 7.2%).

    CONCLUSION: Dyspnea is a common symptom in ED patients contributing substantially to ED, hospital, and ICU workload. It is also associated with significant mortality. There are a wide variety of causes however chronic disease accounts for a large proportion.

    Matched MeSH terms: Risk
  15. Teaching Psychosocial Interventions for Opioid Use Disorder in Low and Middle Income Countries: Malaysia and China
    Marienfeld C, Chawarski M
    Acad Psychiatry, 2016 Jun;40(3):507-13.
    PMID: 26626791 DOI: 10.1007/s40596-015-0438-2
    Matched MeSH terms: Risk Reduction Behavior
  16. Driving anger in Malaysia
    Sullman MJ, Stephens AN, Yong M
    Accid Anal Prev, 2014 Oct;71:1-9.
    PMID: 24863369 DOI: 10.1016/j.aap.2014.04.019
    The present study examined the types of situations that cause Malaysian drivers to become angry. The 33-item version of the driver anger scale (Deffenbacher et al., 1994) was used to investigate driver anger amongst a sample of 339 drivers. Confirmatory factor analysis showed that the fit of the original six-factor model (discourtesy, traffic obstructions, hostile gestures, slow driving, illegal driving and police presence), after removing one item and allowing three error pairs to covary, was satisfactory. Female drivers reported more anger, than males, caused by traffic obstruction and hostile gestures. Age was also negatively related to five (discourtesy, traffic obstructions, hostile gestures, slow driving and police presence) of the six factors and also to the total DAS score. Furthermore, although they were not directly related to crash involvement, several of the six forms of driving anger were significantly related to the crash-related conditions of: near misses, loss of concentration, having lost control of a vehicle and being ticketed. Overall the pattern of findings made in the present research were broadly similar to those from Western countries, indicating that the DAS is a valid measure of driving anger even among non-European based cultures.
    Matched MeSH terms: Risk-Taking*
  17. Motorcycle-related spinal injury: crash characteristics
    Zulkipli ZH, Abdul Rahmat AM, Mohd Faudzi SA, Paiman NF, Wong SV, Hassan A
    Accid Anal Prev, 2012 Nov;49:237-44.
    PMID: 23036400 DOI: 10.1016/j.aap.2011.12.011
    This study presents an analysis of crash characteristics of motorcyclists who sustained spinal injuries in motorcycle crashes. The aim of the study is to identify the salient crash characteristics that would help explain spinal injury risks for motorcyclists. Data were retrospectively collected from police case reports that were archived at MIROS from year 2005 to 2007. The data were categorized into two subcategories; the first group was motorcycle crashes with spinal injury (case) and the second group was motorcycle crashes without spinal injury (control). A total of 363 motorcyclists with spinal injury and 873 motorcyclists without spinal injury were identified and analyzed. Descriptive analysis and multivariate analysis were performed in order to determine the odds of each characteristic in contributing to spinal injury. Single vehicle crash, collision with fixed objects and crash configuration were found to have significant influence on motorcyclists in sustaining spinal injury (p<0.05). Although relatively few than other impact configurations, the rear-end impacted motorcyclist shows the highest risk of spinal injury. Helmets have helped to reduce head injury but they did not seem to offer corresponding protection for the spine in the study. With a growing number of young motorcyclists, further efforts are needed to find effective measures to help reduce the crash incidents and severity of spinal injury. In sum, the study provides some insights on some vital crash characteristics associated with spinal injury that can be further investigated to determine the appropriate counter-measures and prevention strategies to reduce spinal injury.
    Matched MeSH terms: Risk Factors
  18. Factors related to seatbelt-wearing among rear-seat passengers in Malaysia
    Ng CP, Law TH, Wong SV, Kulanthayan S
    Accid Anal Prev, 2013 Jan;50:351-60.
    PMID: 22633252 DOI: 10.1016/j.aap.2012.05.004
    The benefit of wearing a rear seatbelt in reducing the risk of motor vehicle crash-related fatalities and injuries has been well documented in previous studies. Wearing a seatbelt not only reduces the risk of injury to rear-seat passengers, but also reduces the risk of injury to front-seat occupant who could be crushed by unbelted rear-seat passengers in a motor vehicle crash. Despite the benefits of wearing a rear seatbelt, its rate of use in Malaysia is generally low. The objective of this study was to identify factors that are associated with the wearing of a seatbelt among rear-seat passengers in Malaysia. Multinomial logistic regression analysis of the results of a questionnaire survey of 1651 rear-seat passengers revealed that rear-seat passengers who were younger, male, single and less educated and who had a perception of a low level of legislation enforcement, a lower risk-aversion and less driving experience (only for passengers who are also drivers) were less likely to wear a rear seatbelt. There was also a significant positive correlation between driver seatbelt and rear seatbelt-wearing behaviour. This implies that, in regards to seatbelt-wearing behaviour, drivers are more likely to adopt the same seatbelt-wearing behaviour when travelling as rear-seat passengers as they do when driving. These findings are crucial to the development of new interventions to increase the compliance rate of wearing a rear seatbelt.
    Matched MeSH terms: Risk Assessment
  19. Empirical analysis of gross vehicle weight and free flow speed and consideration on its relation with differential speed limit
    Saifizul AA, Yamanaka H, Karim MR
    Accid Anal Prev, 2011 May;43(3):1068-73.
    PMID: 21376903 DOI: 10.1016/j.aap.2010.12.013
    Most highly motorized countries in the world have implemented different speed limits for light weight and heavy weight vehicles. The heavy vehicle speed limit is usually chosen to be lower than that of passenger cars due to the difficulty for the drivers to safely maneuver the heavy vehicle at high speed and greater impact during a crash. However, in many cases, the speed limit for heavy vehicle is set by only considering the vehicle size or category, mostly due to simplicity in enforcement. In this study, traffic and vehicular data for all vehicle types were collected using a weigh-in-motion system installed at Federal Route 54 in Malaysia. The first finding from the data showed that the weight variation for each vehicle category is considerable. Therefore, the effect of gross vehicle weight (GVW) and category of heavy vehicle on free flow speed and their interaction were analyzed using statistical techniques. Empirical analysis results showed that statistically for each type of heavy vehicle, there was a significant relationship between free flow speed of a heavy vehicle and GVW. Specifically, the results suggest that the mean and variance of free flow speed decrease with an increase GVW by the amount unrelated to size and shape for all GVW range. Then, based on the 85th percentile principle, the study proposed a new concept for setting the speed limit for heavy vehicle by incorporating GVW where a different speed limit is imposed to the heavy vehicle, not only based on vehicle classification, but also according to its GVW.
    Matched MeSH terms: Risk Assessment/statistics & numerical data
  20. The direct and indirect effects of corruption on motor vehicle crash deaths
    Hua LT, Noland RB, Evans AW
    Accid Anal Prev, 2010 Nov;42(6):1934-42.
    PMID: 20728645 DOI: 10.1016/j.aap.2010.05.015
    Recent empirical research has found that there is an inverted U-shaped or Kuznets relationship between income and motor vehicle crash (MVC) deaths, such that MVC deaths increase as national income increases and decrease after reaching a critical level. Corruption has been identified as one of the underlying factors that could affect this relationship, primarily by undermining institutional development and effective enforcement schemes. The total effect of corruption can be decomposed into two components, a direct and an indirect effect. The direct effect measures the immediate impact of corruption on MVC deaths by undermining effective enforcement and regulations, while the indirect effect captures the impact of corruption on hindering increases in per capita income and the consequent impact of reduced income on MVC deaths. By influencing economic growth, corruption can lead to an increase or decrease in MVC deaths depending on the income level. Using data from 60 countries between 1982 and 2003, these effects are estimated using linear panel and fixed effects negative binomial models. The estimation results suggest that corruption has different direct effects for less developed and highly developed countries. It has a negative (decreasing) effect on MVC deaths for less developed countries and a positive (increasing) effect on MVC deaths for highly developed countries. For highly developed countries, the total effect is positive at lower per capita income levels, but decreases with per capita income and becomes negative at per capita income levels of about US$ 38,248. For less developed countries, the total effect is negative within the sample range and decreases with increased per capita income. In summary, the results of this study suggest that reduction of corruption is likely a necessary condition to effectively tackle road safety problems.
    Matched MeSH terms: Risk Factors
Related Terms
Filters
Contact Us

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

External Links