Displaying publications 41 - 60 of 240 in total

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  1. Chia YC, Yeoh ES, Ng CJ, Khoo EM, Chua CT
    Singapore Med J, 2009 May;50(5):500-5.
    PMID: 19495520
    INTRODUCTION: Calcium channel blockers are well established modalities for the treatment of hypertension. However, in spite of the availability of many efficacious agents, hypertension control continues to be poor. One reason is poor tolerability due to adverse events. Racial differences also exist. Lercanidipine, a third-generation calcium channel blocker, is associated with better tolerability. However, it has not been studied in the Asian population. This study examines its efficacy and tolerability in Asian subjects of different ethnicities.
    METHODS: This was an eight-week open label study of adults with mild to moderate hypertension. Blood pressure (BP), pulse rate, self-administered symptom check and laboratory evaluations were done at baseline. Patients were prescribed 10 mg lercanidipine, with up-titration to 20 mg if BP was not controlled at Week 4. Baseline evaluations were repeated at Week 8. Adverse events were also enumerated.
    RESULTS: 27 patients (mean age 53.4 +/- 12.1 years) completed the study. The baseline systolic BP (SBP), diastolic BP (DBP) and heart rate was 159 +/- 12.2, 96.6 +/- 7.7 mmHg and 71 +/- 13/min, respectively. Three racial groups were represented. SBP and DBP decreased significantly after four weeks of therapy. A further reduction to 139 +/- 14.3 and 88 +/- 9.8 (p-value is less than 0.0001) was seen in Week 8. The absolute SBP and DBP reduction was 20.5 mmHg (95 percent confidence interval [CI] 16.5-24.5, p-value is less than 0.0001) and 9.3 mmHg (95 percent CI 6.2-12.5, p-value is less than 0.0001), respectively. All adverse symptoms, except for palpitations, were reduced at the end of the study.
    CONCLUSION: Lercanidipine is efficacious and well tolerated in Asians of different ethnicities. Its BP lowering effects and tolerability in Asians appear to be similar to other studies on Caucasians and other calcium channel blockers.
    Matched MeSH terms: Confidence Intervals
  2. Aziah BD, Rusli BN, Winn T, Naing L, Tengku MA
    Singapore Med J, 2004 Apr;45(4):170-5.
    PMID: 15094986
    Several sources of job stress exist. Some of these stressors are intrinsic to the job, while some are related to psychosocial and other factors.
    Matched MeSH terms: Confidence Intervals
  3. Shamsuddin K, Haris MA
    Singapore Med J, 2000 Apr;41(4):167-71.
    PMID: 11063181
    Objectives: To measure the prevalence of cigarette smoking among male secondary school children and assess their family influence especially that of their fathers' smoking habits on their current smoking habits.
    Methodology: A cross-sectional study was carried out in Kota Bharu, Kelantan in April 1997 where 460 male form four students, aged 15-16 years were randomly selected from six secondary schools. Data on smoking habits, sociodemographic profile and family characteristics particularly parents and siblings' smoking habits, perceived parental supervision and communication were collected through self-administered questionnaires.
    Results: The prevalence of cigarette smoking among male secondary school children was 33.2%. Crude analysis shows family factors, fathers' and siblings' smoking habits, and lack of parental supervision were significantly associated with the students' current smoking habit. Among students who smoked compared to non-smokers, father's smoking habit gives a crude Odds Ratio = 1.8, 95% C.I. 1.08 - 3.16. Further analysis shows that the effect of their father's smoking habit on the student's current smoking habit is still significant after controlling for other familial and non-familial factors including parental supervision, academic performance, reported influence of cigarette advertisement, having friends who smoked and the student's poor knowledge of the ill-effects of smoking and other factors (Odds Ratio = 1.9, 95% C.I 1.05 - 3.32). In conclusion, family factors especially the father's smoking habit is an important factor that influences a student's current smoking habit and the presence of negative role models within the home need to be seriously considered in any cigarette smoking prevention programs among secondary school adolescents.
    Keywords: smoking, male students, adolescents, family influence, father’s smoking habit
    Matched MeSH terms: Confidence Intervals
  4. Chye JK, Lim CT
    Singapore Med J, 1999 Sep;40(9):565-70.
    PMID: 10628243
    To determine the survival rates and risk factors associated with mortality in premature very low birth weight or VLBW (< or = 1500 grams) infants.
    Matched MeSH terms: Confidence Intervals
  5. Lee WW, Ooi BC, Thai AC, Loke KY, Tan YT, Rajan U, et al.
    Singapore Med J, 1998 Aug;39(8):359-62.
    PMID: 9844497
    To determine the incidence of insulin dependent diabetes mellitus (IDDM) in children 0-12 years of age in Singapore, which has a population of 2.9 million.
    Matched MeSH terms: Confidence Intervals
  6. Lugah V, Ganesh B, Darus A, Retneswari M, Rosnawati MR, Sujatha D
    Singapore Med J, 2010 Jul;51(7):586-92.
    PMID: 20730400
    Awareness of occupational safety and health (OSH) plays an important role in the prevention of occupational injuries and diseases. Following the enactment of the Occupational Safety and Health Act (OSHA) in 1994, various programmes have been implemented by different agencies to increase awareness and knowledge of OSH in the workplace, including among healthcare workers. The objective of this study was to determine the level of OSH awareness and knowledge among healthcare professionals in Malaysia.
    Matched MeSH terms: Confidence Intervals
  7. Ong LC, Chandran V, Lim YY, Chen AH, Poh BK
    Singapore Med J, 2010 Mar;51(3):247-52.
    PMID: 20428748
    The aim of this study was to identify factors associated with poor academic achievement during the early school years.
    Matched MeSH terms: Confidence Intervals
  8. Mori D, Khanam W, Sheikh RA, Tabib SMSB, Ikebe E, Hossain MM, et al.
    Sci Rep, 2017 Nov 23;7(1):16181.
    PMID: 29170534 DOI: 10.1038/s41598-017-16474-3
    Encephalitis causes significant global morbidity and mortality. A large number of viruses cause encephalitis, and their geographic and temporal distributions vary. In many encephalitis cases, the virus cannot be detected, even after extensive testing. This is one challenge in management of the encephalitis patient. Since cytokines are pivotal in any form of inflammation and vary according to the nature of the inflammation, we hypothesized cytokine levels would allow us to discriminate between encephalitis caused by viruses and other aetiologies. This pilot study was conducted in a tertiary care hospital in Dhaka, Bangladesh. Viral detection was performed by polymerase chain reaction using patient cerebrospinal fluid. Acute phase reactants and cytokines were detected in patient serum. Of the 29 biomarkers assessed using the Wilcoxon rank-sum test, only vascular endothelial growth factor (VEGF) was significantly higher (P = 0.0015) in viral-positive compared with virus-negative encephalitis patients. The area under the curve (AUC) for VEGF was 0.82 (95% confidence interval: 0.66-0.98). Serum VEGF may discriminate between virus-positive and virus-negative encephalitis. Further study will be needed to confirm these findings.
    Matched MeSH terms: Confidence Intervals
  9. Chew ST, Gallagher JB
    Sci Rep, 2018 02 07;8(1):2553.
    PMID: 29416101 DOI: 10.1038/s41598-018-20644-2
    The canopies and roots of seagrass, mangrove, and saltmarsh protect a legacy of buried sedimentary organic carbon from resuspension and remineralisation. This legacy's value, in terms of mitigating anthropogenic emissions of CO2, is based on total organic carbon (TOC) inventories to a depth likely to be disturbed. However, failure to subtract allochthonous recalcitrant carbon overvalues the storage service. Simply put, burial of oxidation-resistant organics formed outside of the ecosystem provides no additional protection from remineralisation. Here, we assess whether black carbon (BC), an allochthonous and recalcitrant form of organic carbon, is contributing to a significant overestimation of blue carbon stocks. To test this supposition, BC and TOC contents were measured in different types of seagrass and mangrove sediment cores across tropical and temperate regimes, with different histories of air pollution and fire together with a reanalysis of published data from a subtropical system. The results suggest current carbon stock estimates are positively biased, particularly for low-organic-content sandy seagrass environs, by 18 ± 3% (±95% confidence interval) and 43 ± 21% (±95% CI) for the temperate and tropical regions respectively. The higher BC fractions appear to originate from atmospheric deposition and substantially enrich the relatively low TOC fraction within these environs.
    Matched MeSH terms: Confidence Intervals
  10. Haflah NH, Jaarin K, Abdullah S, Omar M
    Saudi Med J, 2009 Nov;30(11):1432-8.
    PMID: 19882056
    OBJECTIVE: To assess the efficacy of oral palm vitamin E in reducing symptoms of patients with osteoarthritis (OA) of the knee compared to oral glucosamine sulphate.
    METHODS: This open study was carried out at the Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia between March 2006 and November 2007. Seventy-nine patients were recruited to receive either 1.5 g oral glucosamine sulphate or 400 mg oral palm vitamin E for 6 months. Symptoms were assessed using the Western Ontario and McMaster Universities (WOMAC) osteoarthritis index and visual analogue scale (VAS).
    RESULTS: Sixty-four patients completed the trial (vitamin E n=33, glucosamine sulfate n=31). After 6 months of treatment, both groups showed a significant improvement in WOMAC scale and significant reduction in the VAS score during standing and walking. There was no significant difference in WOMAC scale and VAS score between the 2 groups. Except for mild allergic reaction and abdominal discomfort in one patient, there were no other serious adverse effects reported. Serum malondialdehyde was significantly higher in the glucosamine group compared to palm vitamin E treated group at the end of the study. Serum of vitamin E was significantly higher in the palm vitamin E group compared to glucosamine.
    CONCLUSION: The finding of this study suggests that oral palm vitamin E in a dose of 400 mg taken daily has a potential role in reducing symptoms of patients with OA of the knee. It may be just as effective as glucosamine sulphate in reducing the symptoms and free from serious side effects. Further study is required to ascertain the mechanism of action beside its antioxidant effect.
    Matched MeSH terms: Confidence Intervals
  11. Chet LS, Hamid SAA, Bachok N, Chidambaram SK, Adnan WNAW
    Saudi J Med Med Sci, 2021 04 29;9(2):135-144.
    PMID: 34084104 DOI: 10.4103/sjmms.sjmms_72_20
    Background: Antiretroviral therapy (ART) has transformed the management of human immunodeficiency virus (HIV) infection and significantly improved survival rates, but there is lack of such survival data from Malaysia.

    Objective: The objective was to determine the survival rates and prognostic factors of survival in HIV-infected adults treated with ART in Malaysia.

    Materials and Methods: This retrospective cohort study considered all HIV-positive adult patients registered in Sungai Buloh Hospital, a major referral center in Malaysia, between January 1, 2007 and December 31, 2016. Then, patients were selected through a systematic sampling method. Demographic, clinical, and treatment data were extracted from electronic medical records. Person-years at risk and incidence of mortality rate per 100 person-years were calculated. The Kaplan-Meier survival curve and log-rank test were used to compare the overall survival rates. Cox proportional hazards regression was applied to determine the prognostic factors for survival.

    Results: A total of 339 patients were included. The estimated overall survival rates were 93.8%, 90.4%, 84.9%, and 72.8% at 1, 3, 5, and 10 years, respectively, from ART initiation. The results of multiple Cox proportional hazard regression indicated that anemic patients were at a 3.76 times higher risk of mortality (95% confidence interval [CI]: 1.97-7.18; P < 0.001). The hazard risk was 2.09 times higher for HIV patients co-infected with tuberculosis (95% CI: 1.10, 3.96; P = 0.024).

    Conclusion: The overall survival rates among HIV-infected adults in this study are higher than that from low-income countries but lower than that from high-income countries. Low baseline hemoglobin levels of <11 g/dL and tuberculosis co-infection were strong prognostic factors for survival.

    Matched MeSH terms: Confidence Intervals
  12. Samira Ehsani, Jayanthi Arasan, Noor Akma Ibrahim
    Sains Malaysiana, 2013;42:981-987.
    In this paper, we extended a repairable system model under general repair that is based on repair history, to incorporate covariates. We calculated the bias, standard error and RMSE of the parameter estimates of this model at different sample sizes using simulated data. We applied the model to a real demonstration data and tested for existence of time trend, repair and covariate effects. Following that we also conducted a coverage probability study on the Wald confidence interval estimates. Finally we conducted hypothesis testing for the parameters of the model.The results indicated that the estimation procedure is working well for the proposed model but the Wald interval should be applied with much caution.
    Matched MeSH terms: Confidence Intervals
  13. Kiani K, Arasan J, Habshah Midi
    Sains Malaysiana, 2012;41:471-480.
    There are numerous parametric models for analyzing survival data such as exponential, Weibull, log-normal and gamma. One of such models is the Gompertz model which is widely used in biology and demography. Most of these models are extended to new forms for accommodating different types of censoring mechanisms and different types of covariates. In this paper the performance of the Gompertz model with time-dependent covariate in the presence of right censored data was studied. Moreover, the performance of the model was compared at different censoring proportions (CP) and sample sizes. Also, the model was compared with fixed covariate model. In addition, the effect of fitting a fixed covariate model wrongly to a data with time-dependent covariate was studied. Finally, two confidence interval estimation techniques, Wald and jackknife, were applied to the parameters of this model and the performance of the methods was compared.
    Matched MeSH terms: Confidence Intervals
  14. Dilokthornsakul P, Thoopputra T, Patanaprateep O, Kongsakon R, Chaiyakunapruk N
    SAGE Open Med, 2016;4:2050312116637026.
    PMID: 27026801 DOI: 10.1177/2050312116637026
    BACKGROUND: This study was conducted to determine the impacts of medication adherence on hospitalization and direct healthcare cost in patients with schizophrenia in Thailand.
    METHODS: A retrospective study was undertaken. Patients with schizophrenia aged 18-65 years who visited a University hospital and received antipsychotics from April 2011 to October 2011 were included. Propensity score-adjusted logistic regression was used to determine the impacts of medication adherence on schizophrenia-related and all-cause hospitalizations.
    RESULTS: A total of 582 patients were included. Three out of 224 patients (1.3%) were hospitalized with schizophrenia in optimal adherence group, while 10 of 140 (7.1%) were hospitalized in under-adherence group, and 7 of 218 (3.2%) were hospitalized in over-adherence group. Based on propensity score-adjusted multivariate logistic regression, the adjusted odds ratio was 5.86 (95% confidence interval = 1.53-22.50) for schizophrenia-related hospitalization and 8.04 (95% confidence interval = 2.20-29.40) for all-cause hospitalization. The average annual direct healthcare costs in patients with optimal adherence, under-adherence, and over-adherence were US$371 ± US$836, US$386 ± US$734, and US$508 ± US$2168, respectively.
    CONCLUSION: An initiation of interventions to maintain optimal adherence in patients with schizophrenia would significantly impact the healthcare system.
    KEYWORDS: Adherence; antipsychotics; cost; hospitalization
    Matched MeSH terms: Confidence Intervals
  15. Almaslami F, Aljunid SM
    SAGE Open Med, 2020;8:2050312120931988.
    PMID: 32587695 DOI: 10.1177/2050312120931988
    Objectives: The aim of this study was to compare the cost-effectiveness of in vitro fertilization and intrauterine insemination for the management of unexplained, mild male and mild female factor infertility in Saudi Arabia.

    Methods: A cost-effectiveness analysis from a societal perspective was conducted for couples seeking assisted reproductive technology services between January and December 2016 in one of the largest private hospitals in Saudi Arabia. Activity-Based Costing and Step-Down Costing methodologies with expert interviews were used to compute the costs of in vitro fertilization and intrauterine insemination. A total of 710 assisted reproductive technology procedures were observed by the embryologist in charge. The costs calculated included direct and indirect costs. A cost-effectiveness analysis and a Monte Carlo simulation probabilistic sensitivity analysis were conducted.

    Results: The average cost per in vitro fertilization and intrauterine insemination cycle was SR 27,360 (range: SR 19,541-29,618) and SR 10,143 (range: SR 7568-11,976), respectively, and the live birth rate per initiated in vitro fertilization and intrauterine insemination cycle was 20.7% and 7.9%, respectively, resulting in an average cost per live birth per in vitro fertilization and intrauterine insemination treatment cycle of SR 132,174 (95% confidence interval: 120,802-143,546) and SR 128,392 (95% confidence interval: 124,468-132,316), respectively. The incremental cost-effectiveness ratio was SR 134,508 per extra live birth implicit in a decision to treat with in vitro fertilization. Probabilistic sensitivity analysis confirms the robustness of the cost-effectiveness results.

    Conclusion: This study found that from a societal perspective, one in vitro fertilization treatment cycle was more cost-effective than intrauterine insemination in Saudi Arabia.

    Matched MeSH terms: Confidence Intervals
  16. Tan BY, Shafie AA, Hassali MAA, Saleem F
    SAGE Open Med, 2017;5:2050312117709189.
    PMID: 28839933 DOI: 10.1177/2050312117709189
    OBJECTIVES: To assess the efficacy and costs of a calendar blister packaging intervention used to improve medication adherence.

    METHOD: A parallel randomized controlled trial was conducted with 73 hypertensive patients (intervention group = 35, control group = 38) at Hospital Kulim, Malaysia, for 7 months.

    RESULTS: The intervention group demonstrated a significant improvement in medication possession ratio (p 

    Matched MeSH terms: Confidence Intervals
  17. C W Ahmad CWI, Awang Lukman K, Raja Omar RM, Jeffree MS
    Risk Manag Healthc Policy, 2021;14:803-808.
    PMID: 33658876 DOI: 10.2147/RMHP.S278786
    Background and Aim: Healthcare workers (HCWs) routinely experience occupational blood and body fluid exposure (OBBE), including percutaneous injury and splash exposure to non-intact skin. The objective of this study was to determine the prevalence of OBBE and identify associated risk factors.

    Methods: A cross-sectional study was performed on 334 HCWs at 9 workstations. Data were collected with a self-administered questionnaire that consisted of four parts: sociodemographic variables, work-related information, knowledge about needle stick and sharps injury and splash exposure, and information regarding previous OBBE incidents. The data were analyzed by SPSS version 22.0 software.

    Findings: The prevalence of OBBE was 25.1% (95% confidence interval: 20.6-30.2), mostly due to percutaneous injuries, which were not reported to authorities. The highest proportions were among nurses and those working in the medical ward. Needle recapping practices were associated with almost a four-times higher risk of OBBE compared to no-recapping practices. HCWs who did not have any infection prevention training had a three-times higher risk of OBBE.

    Conclusion: Factors associated with OBBE are unsafe work practices, inadequate infection prevention training, and lack of knowledge regarding blood-borne infection. There is a need for more training and increased awareness about the risks of OBBE to reduce unsafe practices.

    Matched MeSH terms: Confidence Intervals
  18. Hasanah CI, Zaliha AR, Mahiran M
    Qual Life Res, 2011 Feb;20(1):91-100.
    PMID: 20737215 DOI: 10.1007/s11136-010-9729-y
    PURPOSE: The aim of this study was to determine the socio-demographic, clinical and psychological factors influencing the quality of life (QOL) in patients with human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS).
    METHODS: This was a cross-sectional study on 271 patients with HIV infection attending an HIV clinic in Kota Bharu, Malaysia. Participants completed the Malay version of the Functional Assessment of HIV Infection (FAHI) and Malay Hospital Anxiety Depression Scale (HADS).
    RESULTS: The patients functioned satisfactorily in the physical domain. They were mostly impaired in the social domain. Those who acquired the HIV infection via a heterosexual route seemed to have a significantly lower social well-being, while those who acquired HIV via drug injection were not associated with losses in the overall QOL or any of its domains. Non-disclosure paradoxically had a greater effect on social well-being. About 38% had possible anxiety, depression or both, and these emotional disturbances were significantly associated with total FAHI and its five domains.
    CONCLUSIONS: Psychological and social well-beings were more affected than physical well-being in out-patients with HIV infection in Kota Bharu, Malaysia. The study suggests that the patients with HIV infection should receive better psycho-education and psychological intervention.
    Study site: Infectious Disease clinic, Hospital Raja Perempuan Zainab II, Kota Bharu Kelantan, Malaysia
    Matched MeSH terms: Confidence Intervals
  19. Rajah R, Hassali MAA, Murugiah MK
    Public Health, 2019 Feb;167:8-15.
    PMID: 30544041 DOI: 10.1016/j.puhe.2018.09.028
    OBJECTIVES: Health literacy is increasingly recognized as a public health concern. Most of the literature on health literacy concentrate in the Western countries. Therefore, this study aimed to systematically review and examine the available studies on health literacy in Southeast Asian countries and estimate its prevalence in this region.

    STUDY DESIGN: Systematic review.

    METHODS: A search for relevant articles was carried out using Cumulative Index to Nursing and Allied Health Literature (CINAHL) and MEDLINE (via EBSCOhost), Scopus, Science Direct, PubMed and Google Scholar with multiple search terms. Inclusion criteria comprised articles published in English language and assessing general health literacy. Risk of bias reduced with the involvement of two independent reviewers in the screening of the literature and the quality assessment process.

    RESULTS: A total of 11 studies were included, which only consist of studies from five countries out of 11 making up the Southeast Asian region. The overall prevalence of limited health literacy varied considerably, 1.6%-99.5% with a mean of 55.3% (95% confidence interval [CI]: 35.1%-75.6%). A much higher prevalence was noted in studies conducted in healthcare settings, 67.5% (95% CI: 48.6%-86.3%). The most common factors associated with limited health literacy were education attainment, age, income and socio-economic background. Other factors identified were gender and health behaviours.

    CONCLUSIONS: In summary, despite the little evidence available and existences of high heterogeneity among studies, limited health literacy is still prevalent in Southeast Asian countries. Urgent strategies to improve and promote health literacy in the region are highly warranted. Besides, more studies on health literacy with better quality on the methodology aspect are needed.

    Matched MeSH terms: Confidence Intervals
  20. Hairi NN, Bulgiba A, Peramalah D, Mudla I
    Prev Med, 2013 Jan;56(1):8-11.
    PMID: 23103916 DOI: 10.1016/j.ypmed.2012.10.016
    Managing stairs is a challenging activity of daily living (ADL) for older people. This study aims to examine the association between visual impairment and difficulty in managing stairs among older people living alone and those living with others.
    Matched MeSH terms: Confidence Intervals
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