Displaying publications 1 - 20 of 38 in total

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  1. Basivi PK, Ramesh S, Kakani V, Yadav HM, Bathula C, Afsar N, et al.
    Sci Rep, 2021 May 10;11(1):9918.
    PMID: 33972653 DOI: 10.1038/s41598-021-89430-x
    In this study, a novel nanohybrid composite containing nitrogen-doped multiwalled carbon nanotubes/carboxymethylcellulose (N-MWCNT/CMC) was synthesized for supercapacitor applications. The synthesized composite materials were subjected to an ultrasonication-mediated solvothermal hydrothermal reaction. The synthesized nanohybrid composite electrode material was characterized using analytical methods to confirm its structure and morphology. The electrochemical properties of the composite electrode were investigated using cyclic voltammetry (CV), galvanic charge-discharge, and electrochemical impedance spectroscopy (EIS) using a 3 M KOH electrolyte. The fabricated composite material exhibited unique electrochemical properties by delivering a maximum specific capacitance of approximately 274 F g-1 at a current density of 2 A g-1. The composite electrode displayed high cycling stability of 96% after 4000 cycles at 2 A g-1, indicating that it is favorable for supercapacitor applications.
  2. Kakani V, Ramesh S, Yadav HM, Bathula C, Basivi PK, Palem RR, et al.
    Sci Rep, 2022 Sep 20;12(1):12951.
    PMID: 36127493 DOI: 10.1038/s41598-022-16863-3
    Nitrogen-doped multiwalled carbon nanotubes (N-MWCNTs) have been used to fabricate nanostructured materials for various energy devices, such as supercapacitors, sensors, batteries, and electrocatalysts. Nitrogen-doped carbon-based electrodes have been widely used to improve supercapacitor applications via various chemical approaches. Based on previous studies, CuO@MnO2 and CuO@MnO2/N-MWCNT composites were synthesized using a sonication-supported hydrothermal reaction process to evaluate their supercapacitor properties. The structural and morphological properties of the synthesized composite materials were characterized via Raman spectroscopy, XRD, SEM, and SEM-EDX, and the morphological properties of the composite materials were confirmed by the nanostructured composite at the nanometer scale. The CuO@MnO2 and CuO@MnO2/N-MWCNT composite electrodes were fabricated in a three-electrode configuration, and electrochemical analysis was performed via CV, GCD, and EIS. The composite electrodes exhibited the specific capacitance of ~ 184 F g-1 at 0.5 A g-1 in the presence of a 5 M KOH electrolyte for the three-electrode supercapacitor application. Furthermore, it exhibited significantly improved specific capacitances and excellent cycling stability up to 5000 GCD cycles, with a 98.5% capacity retention.
  3. Al-Dubai SA, Ganasegeran K, Al-Shagga MA, Yadav H, Arokiasamy JT
    ScientificWorldJournal, 2013;2013:465161.
    PMID: 24453859 DOI: 10.1155/2013/465161
    Little is known about the relationships between adverse health effects and unhealthy behaviors among medical students using Facebook. The aim of this study was to determine the associations between adverse health effects and unhealthy behaviors with Facebook use. A cross-sectional study was conducted in a private university in Malaysia among 316 medical students. A self-administered questionnaire was used. It included questions on sociodemographics, pattern of Facebook use, social relationship, unhealthy behaviors, and health effects. Mean age was 20.5 (±2.7) years. All students had a Facebook account. The average daily Facebook surfing hours were 2.5 (±1.7). Significant associations were found between average hours of Facebook surfing and the following factors: isolation from family members and community, refusing to answer calls, musculoskeletal pain, headache, and eye irritation (P < 0.005). The average hours spent on Facebook were significantly associated with holding urination and defecation while online, surfing Facebook until midnight, and postponing, forgetting, or skipping meals (P < 0.005). The average hours spent on Facebook were associated with adverse health effects and unhealthy behaviors among medical students, as well as social isolation from the family and community.
  4. Anbori A, Ghani SN, Yadav H, Daher AM, Su TT
    Int J Qual Health Care, 2010 Aug;22(4):310-5.
    PMID: 20543208 DOI: 10.1093/intqhc/mzq029
    To evaluate patients' satisfaction and loyalty to private hospitals and to identify factors influencing patient loyalty.
  5. Al-Dubai SA, Sempeho J, Yadav H, Sahathevan R, Law ZK, Manaf MR
    Int J Stroke, 2016 07;11(5):NP58-9.
    PMID: 26865155 DOI: 10.1177/1747493016632252
  6. Onunkwor OF, Al-Dubai SA, George PP, Arokiasamy J, Yadav H, Barua A, et al.
    PMID: 26753811 DOI: 10.1186/s12955-016-0408-8
    There is a rapid increase in the population of the elderly globally, and Malaysia is anticipated to become an ageing nation in 2030. Maintaining health, social participation, reducing institutionalization, and improving quality of life of the elderly are public health challenges of the 21(st) century. Quality of life among elderly in Elderly Homes in Malaysia is under researched. This study aims to determine the quality of life and its associated factors among the Elderly in Elderly Homes in Kuala Lumpur.
  7. Mahadeva S, Yadav H, Rampal S, Everett SM, Goh KL
    Aliment Pharmacol Ther, 2010 May;31(10):1141-51.
    PMID: 20175766 DOI: 10.1111/j.1365-2036.2010.04270.x
    The role of ethnicity in the development of dyspepsia remains uncertain.
  8. Yadav H, Jegasothy R, Ramakrishnappa S, Mohanraj J, Senan P
    BMC Med Educ, 2019 Jun 18;19(1):218.
    PMID: 31215454 DOI: 10.1186/s12909-019-1662-3
    BACKGROUND: Ethical behavior and professionalism is an ideal characteristic required of medical students and included as 'must achieve' and critical aspect of medical students' curriculum. This study proposes to determine the perceived unethical and unprofessional behavior among medical students in a private medical university from year 1 to year 5 of the medical curriculum.

    METHODS: A cross-sectional study was conducted among year 1 to year 5 medical students in a private medical university. A self-administered questionnaire was used with the 3 major domains of professionalism and ethics i.e. discipline plagiarism and cheating.

    RESULTS: A total of 464 respondents responded to the survey and they included medical students from year 1 and year 2 (pre-clinical) and years 3-5 (clinical years). Majority of the students, 275 (59.2%) answered that they had not seen any form of unethical behavior among other students. The females seem to have a larger number 172(63%) among the same gender compared to the males. Majority 352 (75%) of them had not heard of the 'Code of Professional Conduct by the Malaysian Medical Council'. About fifty three (53.1%) of the students answered that the training was sufficient.

    CONCLUSIONS: This study showed that the perception of unethical behavior was 58.8% in the 1st year (pre-clinical) and it increased to 65.2% in the 5th year (clinical). The 3 main discipline issues were students do not show interest in class (mean 2.9/4), they are rude to other students (mean 2.8/4) and talking during class (mean 2.6/4). Despite the existence of unethical behavior among the students majority of them (71.7%) claimed that they had adequate training in ethics and professionalism. It is proposed that not only the teaching of ethics and professionalism be reviewed but an assessment strategy be introduced to strengthen the importance of professionalism and ethics.

  9. Mahadeva S, Yadav H, Rampal S, Goh KL
    Am J Gastroenterol, 2010 Apr;105(4):904-12.
    PMID: 20179699 DOI: 10.1038/ajg.2010.26
    The epidemiology and impact of dyspepsia in rural Asia remains uncertain. We aimed to determine the prevalence epidemiology and impact of dyspepsia in a rural Malaysian community.
  10. Azzani M, Ba-Alawi E, Atroosh WM, Yadav H
    BMC Womens Health, 2023 Jan 16;23(1):19.
    PMID: 36647066 DOI: 10.1186/s12905-023-02172-y
    BACKGROUND: Studies have revealed that a higher proportion of women affected by cervical cancer are from some minority groups of immigrant women. Hence, this study was conducted to assess Yemeni immigrant women's awareness of cervical cancer and its associated socio-demographic factors.

    METHODS: A cross-sectional study was conducted among 370 Yemeni women in Selangor and Kuala Lumpur, Malaysia. Data on the awareness of symptoms/signs, risk factors, and screening programme were collected using Cervical Cancer Awareness Measurement (Cervical CAM) questionnaire.

    RESULTS: More than 74% of the study participants were unable to recall any warning symptoms/signs, and 73% were unable to recall any risk factors. The factors associated with the awareness of symptoms and risk factors were age (95% CI 4.22-5.22, p = 0.039), marital status (95% CI 4.05-7.87, p = 0.021), employment (95% CI 3.89-5.77, p = 0.046) and the number of children (95% CI 5.33-6.54, p = 0.041).

    CONCLUSION: The findings underline the need for public awareness campaigns to improve public awareness of cancer symptoms and risk factors among underserved communities.

  11. Mahadeva S, Yadav H, Everett SM, Goh KL
    J Neurogastroenterol Motil, 2012 Jan;18(1):43-57.
    PMID: 22323987 DOI: 10.5056/jnm.2012.18.1.43
    BACKGROUND/AIMS: The economic impact of dyspepsia in regions with a diverse healthcare system remains uncertain. This study aimed to estimate the costs of dyspepsia in a rural and urban population in Malaysia.

    METHODS: Economic evaluation was performed based on the cost-of-illness method. Resource utilization and quality of life data over a specific time frame, were collected to determine direct, indirect and intangible costs related to dyspepsia.

    RESULTS: The prevalences of dyspepsia in the rural (n = 2,000) and urban (n = 2,039) populations were 14.6% and 24.3% respectively. Differences in socioeconomic status and healthcare utilisation between both populations were considerable. The cost of dyspepsia per 1,000 population per year was estimated at USD14,816.10 and USD59,282.20 in the rural and urban populations respectively. The cost per quality adjusted life year for dyspepsia in rural and urban adults was USD16.30 and USD69.75, respectively.

    CONCLUSIONS: The economic impact of dyspepsia is greater in an urban compared to a rural setting. Differences in socioeconomic status and healthcare utilisation between populations are thought to contribute to this difference.

  12. Lee YL, Verma RK, Yadav H, Barua A
    Eur J Dent Educ, 2016 Nov;20(4):218-228.
    PMID: 26277860 DOI: 10.1111/eje.12164
    BACKGROUND: Facebook and mobile texting are prevalent in the lives of almost every student. However, little is known about the relationship between Facebook usage or mobile texting and their impacts on health amongst undergraduate dental students. In this study, excessive Facebook use and excessive mobile texting were studied as they relate to impacts on health.

    MATERIALS AND METHODS: A cross-sectional study was conducted at a private university in Malaysia. A total of 188 undergraduate dental students were interviewed using a pre-tested and self-rated questionnaire. Data collected from participants were analysed using SPSS version 18.0. Chi-square test, Fisher's exact test and multiple logistic regression analyses were applied to study the relationship between explanatory variables and excessive Facebook use and excessive mobile texting.

    RESULTS: The prevalence of excessive Facebook use and excessive mobile texting amongst undergraduate dental students was found to be 33.2% and 33.0%, respectively. According to a multivariate analysis, texting habits, such as the presence of daytime sleepiness after texting late at night (aOR = 2.682, 95% CI = 1.142-6.301) and the presence of anxious feelings if students failed to receive a timely response (aOR = 3.819, 95% CI = 1.580-9.230), were determined to be significant predictors of excessive mobile texting. Excessive Facebook use was found to be significantly related to three variables as follows: fewer numbers of close friends (aOR = 2.275, 95% CI = 1.057-4.898), the checking of updates on the Facebook walls of their friends (aOR = 2.582, 95% CI = 1.189-5.605) and the absence of active and vigorous feelings during Facebook use (aOR = 3.401, 95% CI = 1.233-9.434).

    CONCLUSIONS: Approximately one-third of undergraduate dental students in this study experienced excessive Facebook use and/or excessive mobile texting. Health education and promotion should be instituted to create awareness, whilst students should be advised to practise self-control with respect to both mobile texting and Facebook usage.

  13. Mahadeva S, Yadav H, Everett SM, Goh KL
    Neurogastroenterol Motil, 2011 Sep;23(9):846-53.
    PMID: 21740483 DOI: 10.1111/j.1365-2982.2011.01746.x
    BACKGROUND:
    Dyspepsia is a common, chronic condition but medical consultation rates for symptoms remain variable. We aimed to examine two populations with varied health-care provision to determine predictive factors for dyspepsia-related consultation.

    METHODS:
    A cross-sectional, population-based study in both an urban and a rural community within a single Asian country was conducted. Details on dyspepsia-related consultation rates over a fixed period and independent factors influencing them were identified.

    KEY RESULTS:
    A total of 4039/5370 (75.2%) adults from representative rural and urban areas in this country agreed to participate in the study. Although mean ages of respondents were similar (40.4years), the demographics of both populations varied in terms of gender (62.7% female, rural vs 55.7% female, urban, P<0.0001), marital status (75.4% rural vs 70.5% urban, P=0.002), ethnicity, (79% Malay rural vs 45.3% Malays urban, P<0.0001) and socio-economic status (professional occupation 7.1% rural vs 47.3% urban, P<0.0001). Dyspepsia-related consultation rates were found to be higher among rural compared to urban adults (41.4%vs 28.7%, P<0.0001). Over-the-counter medication consumption was higher among urban compared to rural dyspepsia sufferers (n=157 vs n=35, P<0.0001). Following logistic regression, rural population (OR 3.14, 95% CI=1.65-6.0), low quality of life (OR 1.90, 95% CI=1.17-3.10), and self-medication (OR 0.40, 95% CI=0.25-0.62) were found to independently predict dyspepsia-related consultation.

    CONCLUSIONS & INFERENCES:
    Dyspepsia-related consultation varied significantly between urban and rural communities. Factors within the rural population, self-medication practices, and a low quality of life independently influenced dyspepsia-related consultation.
  14. Yadav H, Lee N
    J Obstet Gynaecol Res, 2014 Feb;40(2):439-44.
    PMID: 24147966 DOI: 10.1111/jog.12209
    To identify the risk factors influencing the development of macrosomia among pregnant women and to develop a regression model to predict macrosomia.
  15. Tan KL, Yadav H
    Med J Malaysia, 2008 Mar;63(1):17-20.
    PMID: 18935725 MyJurnal
    This is a cohort study investigating the profile of children with disability registered with the primary health care clinics in Malaysia. The purpose of the study was to determine whether reassessment on the development of children with disability under rehabilitation should be done at three months interval or six months interval. Secondary data from the pilot project conducted by the Family Health Development Division, Ministry of Health Malaysia was used in this study. The study was carried out for seven months from 1st August 2004 until 28th February 2005. A total of 168 disabled children followed up for six months were selected in this study. Schedule of Growing Scale (SGS) II was the tool used for analysis. Results showed a statistically significant difference in the mean total SGS score at six months interval but not at three months interval. The result suggests that reassessment on children with Down Syndrome, Autism, Cerebral Palsy, mental retardation and delayed speech under rehabilitation should be carried out every six months while children with gross developmental delay and slow learner might need a longer interval for reassessment.
  16. Jalaludin MA, Yadav H
    Med J Malaysia, 2005 Aug;60 Suppl D:2-3.
    PMID: 16315615
  17. Tan KL, Yadav H
    Med J Malaysia, 2008 Aug;63(3):199-202.
    PMID: 19248689 MyJurnal
    This is a cross-sectional study investigating the profile of children with disability registered with the primary health care clinics in Malaysia. The purpose of the study was to assess the developmental stage of children with disability. Secondary data from the pilot project conducted by the Family Health Development Division, Ministry of Health Malaysia was used in this study. The study period was for six months from 1st August 2004 until 31st January 2005. A total of 900 disabled children were selected in this study. Schedule of Growing Scale (SGS) II was used for analysis. Results showed more boys than girls were affected with a ratio of 6:4. The mean total SGS score increases as the age of the child increased. The score was highest in delayed speech cases and lowest in cerebral palsy cases. The performance among children with delayed speech was the highest while children with cerebral palsy were the lowest. There was a statistically significant difference between the major ethnic groups in delayed speech and attention deficit hyperactive disorder.
    Questionnaire: Denver Developmental Assessment Test II chart; DSST; Schedule of Growing Scale II; SGS
  18. Yadav H, Lee N
    Med J Malaysia, 2013;68(1):44-7.
    PMID: 23466766 MyJurnal
    This study examines the association between maternal factors and low birth weight among newborns at a tertiary hospital in Malaysia. This was a cross-sectional study where mothers were followed through from first booking till delivery. There were 666 mothers who delivered from May 2007 to March 2008. Infants' birth weight were compared with maternal age, pre-pregnancy BMI, fathers BMI, parity, ethnicity, per capita monthly income, and maternal blood pressure during pregnancy. A multiple logistic regressions was used to determine the relationship of maternal factors and low birth weight, while the ROC curve was constructed to assess the sensitivity and specificity of the predictive model. Among the significant risk factors of low birth weight were older age (35 years and above), low pre-pregnancy BMI (<20 kg/m2), parity of 4 and above, Indian origin, economically under privileged, and low and high blood pressure. Blood pressure during pregnancy was an important risk factor for LBW, by using this parameter alone the risk of LBW could be predicted with a sensitivity rate of 70% and a specificity rate of 70%. The sensitivity and specificity was further improved to 80% and 75% percent respectively when other factors like maternal factors such as maternal age, pre-pregnancy BMI, ethnicity, and per capita monthly income were included in the analysis.
  19. Siah CK, Yadav H
    Med J Malaysia, 2002 Jun;57(2):188-94.
    PMID: 24326649
    A cross sectional descriptive study on breast feeding practices in an urban clinic was conducted among 136 mothers aged between 21-49 years who were interviewed using a questionnaire. Malays constituted 61% of the respondents, Chinese 22.8% and Indians 16.2%. Mojority of these were working mothers and although the initiation of breastfeeding was high (99.3%), exclusive breastfeeding was only 12.5%. A large proportion (33.8%) dtopped prior to 3 months. Majority of the Chinese mothers (61.3%) stipped before 3 months as compared to the Indian (40.9%) and Malay (21.7%) mothers (p<0.001). Mean age of introducing complementary foods at 3 months is below the accepted age of 4 to 6 months for weaning. Ever-breast feeding rate is high in this urban setting but more efforts are needed to effect a higher rate of exclusive breastfeeding and longer duration of breastfeeding.
  20. Yadav H, Lin WY
    Asia Pac J Public Health, 2001;13 Suppl:S58-61.
    PMID: 12109251
    Malaysia enjoys a comprehensive range of health services, the government being committed to the principles of universal access to high quality health care, which the Ministry of Health provides through a wide variety of nation wide network of clinics and hospitals. One of the major problems is the availability of comprehensiveness and quality of health care in remote health centres. When patients are transferred from the health centres to the hospitals for further treatment, this not only incurs inconvenience to the patients and their family but also increases the cost to the health care system. Teleprimary care is one of the tools to overcome this problem. The doctors in the remote clinics are able to discuss the problem cases through teleconsultation with the doctors and specialist in the hospitals using an audiovisual system to provide better care in the health centers without transferring the patients to the hospitals. Only the essential and needy patients are referred to the hospitals. This has not only reduced the number of patients referred to the hospitals but it has reduced the cost to the health care system. It has also provided a more comprehensive care to the patients in the health centres. The doctors in the health centers are also provided training and are also updated on the latest in medicine. This method of training has made doctors in the health centers more efficient and satisfied.
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