Displaying publications 61 - 80 of 205 in total

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  1. Boettiger DC, Nguyen VK, Durier N, Bui HV, Heng Sim BL, Azwa I, et al.
    J Acquir Immune Defic Syndr, 2015 Feb 01;68(2):186-95.
    PMID: 25590271 DOI: 10.1097/QAI.0000000000000411
    BACKGROUND: Roughly 4% of the 1.25 million patients on antiretroviral therapy (ART) in Asia are using second-line therapy. To maximize patient benefit and regional resources, it is important to optimize the timing of second-line ART initiation and use the most effective compounds available.

    METHODS: HIV-positive patients enrolled in the TREAT Asia HIV Observational Database who had used second-line ART for ≥6 months were included. ART use and rates and predictors of second-line treatment failure were evaluated.

    RESULTS: There were 302 eligible patients. Most were male (76.5%) and exposed to HIV via heterosexual contact (71.5%). Median age at second-line initiation was 39.2 years, median CD4 cell count was 146 cells per cubic millimeter, and median HIV viral load was 16,224 copies per milliliter. Patients started second-line ART before 2007 (n = 105), 2007-2010 (n = 147) and after 2010 (n = 50). Ritonavir-boosted lopinavir and atazanavir accounted for the majority of protease inhibitor use after 2006. Median follow-up time on second-line therapy was 2.3 years. The rates of treatment failure and mortality per 100 patient/years were 8.8 (95% confidence interval: 7.1 to 10.9) and 1.1 (95% confidence interval: 0.6 to 1.9), respectively. Older age, high baseline viral load, and use of a protease inhibitor other than lopinavir or atazanavir were associated with a significantly shorter time to second-line failure.

    CONCLUSIONS: Increased access to viral load monitoring to facilitate early detection of first-line ART failure and subsequent treatment switch is important for maximizing the durability of second-line therapy in Asia. Although second-line ART is highly effective in the region, the reported rate of failure emphasizes the need for third-line ART in a small portion of patients.

    Matched MeSH terms: Survival Analysis
  2. Ng EK, Goh BL, Chew SE, Tan CC, Ching CH, Sha'ariah MY, et al.
    Semin Dial, 2012 Sep-Oct;25(5):569-73.
    PMID: 22353629 DOI: 10.1111/j.1525-139X.2012.01051.x
    The demands for timely catheter insertion have spurred the growth of peritoneoscopic catheter insertion program by nephrologists in Malaysia. We performed a multicenter analysis to study its impact on the growth of peritoneal dialysis (PD) population. Data were collected retrospectively from five centers at the point of program initiation until December 2009. In Center 1, with this program, PD population continued to grow from 25 patients in 2006 to 120 in 2009. In center 2, the program began in 2005, but comprised only 28.6% of total insertions. From 2007 onwards, nephrologists had overtaken the surgeon, inserting from 85% to 97% of the total insertions. In center 3, with the program at its infancy, a modest growth in its PD population was shown. In center 4, nephrologists maintained an annual average of 41.8% of total catheter insertions, and thus maintaining a stable PD population. In center 5, surgeon-assisted PD catheter insertions helped to maintain the growth of its PD, seeing lesser impact from this program. Subanalysis showed that 1-year catheter survival in Center 1 was 85.4%. This study on PD catheter insertion program by nephrologists showed the greatest impact on new center and center experiencing suboptimal catheter insertions by traditional providers.
    Matched MeSH terms: Survival Analysis
  3. Norma S, Azmi MT, Rotina AB
    MyJurnal
    Introduction: Diabetes Mellitus is a chronic disease and major cause of chronic renal disease. Chronic renal disease can be prevented if known risk factors were been early detected. Albuminuria is the earliest clinical evidence of chronic renal disease. Objectives of this study is to identify the incidence of albuminuria and relationship between albuminuria with socio demographic and clinical factors such as blood sugar control, blood pressure control, excessive body mass index and hypercholesterolemia.
    Methodology: Data been collected from patient’s record that been regularly follow up at Primary Healthcare Clinics in Negeri Sembilan. Duration of study follow up was from the date of they been diagnosed of Diabetes Mellitus Type 2 until detection of albuminuria or 1st July 2007,end date of data collection then survival analysis been done.
    Result: Majority of study population was female 60.9% and Malay 69.7%. Mean age was 59.9 ± 10.7 and duration having Diabetes Mellitus was 7.0 ± 6.3 years. Only 22% achieved optimum glucose (HbA1c < 6.5%), controlled blood preassure 130/80 mmHg 42.3%, level of cholesterol <4.5 mmol/L only 22.7 %, 11.4% of patients having ideal body weight < 23 kg/m2. The incidence of Diabetes Mellitus Type 2 was 24.4 cases per 1000 population. The median of follow up duration was 22 years; with minimum follow up was 7 months and maximum 42 years. Survival analysis showed that the median of free albuminuria among cases was 22 years (CI 95%:16.5 – 27.4). The log rank test showed no significant relationship between high blood pressure, excessive body mass index and hypercholesterolemia with albuminuria. This study noted that the occurrence of albuminuria seems to be higher among those were hypertensive (26.6%), and excessive body mass index (24.7%).
    Conclusion: Percentage of Diabetes Mellitus Type 2 patient that achieved optimum clinical target still very low. Early detection of albuminuria is very important as preventive measure of diabetes nephropathy. Good blood pressure control and ideal body weight also prevent of occurring diabetes nephropathy complication.
    Keywords: Diabetes Mellitus Type 2, albuminuria, survival analysis.
    Matched MeSH terms: Survival Analysis
  4. Wan NurHazirah Wan Ahmad Kamil, Zuraiza Mohamad Zaini, Anand Ramanathan, Thomas Abraham, Rosnah Mohd Zain
    MyJurnal
    Introduction: Oral squamous cell carcinoma (OSCC) is a major health problem worldwide. The overall survival rate remains at 50% despite numerous studies and various treatment modalities in OSCC. The presence of lymph node metastasis in OSCC is well established as an independent prognostic factor. This present study aims to investigate the association of four tumour antigens; FJX-1, GNα12, IFITM3 and MAGED4B with the sociodemographic and clinicopathological parameters of OSCC. The potential use of these markers as a prognostic indicator of patient sur-vival and lymph node metastasis in OSCC was explored. Methods: 35 cases of OSCC with available formalin-fixed paraffin-embedded (FFPE) specimens involving the tongue, buccal mucosa, gingiva, alveolus and floor of mouth were evaluated by immunohistochemistry for FJX-1, GNA12, IFITM3 and MAGED4B expression. Assessment of the expression of these tumour antigens was based on the cellular sub-site, intensity and percentage of staining in the OSCC samples. Results: The expression of all four tumour markers were expressed in all samples (n=35) but none statistically associated with any clinicopathological or socio-demographic parameters. Survival analysis using Kaplan-Meier test showed high expression of GNA12, IFITM3 and MAGED4B individually with poor prognosis in OSCC patients. A combination of markers, GNA12 and MAGED4B demonstrated a significant association with pa-tient survival in OSCC (p=0.014). Multivariate analysis after adjustment for selected socio-demographic factors (age, gender, risk habits and sub-sites of the oral cavity) revealed that high expression of both MAGED4B and GNA12 remained as an independent prognostic factor for poor prognosis in OSCC (HRR =5.231, 95% CI 1.601,17.084; p=0.006). Conclusion: We concluded that high combined expression of both marker (Gα12 and mAGED4B) might be used as an independent prognostic indicator in OSCC.
    Matched MeSH terms: Survival Analysis
  5. Sathasivam HP, Kist R, Sloan P, Thomson P, Nugent M, Alexander J, et al.
    Br J Cancer, 2021 Aug;125(3):413-421.
    PMID: 33972745 DOI: 10.1038/s41416-021-01411-z
    BACKGROUND: This study was undertaken to develop and validate a gene expression signature that characterises oral potentially malignant disorders (OPMD) with a high risk of undergoing malignant transformation.

    METHODS: Patients with oral epithelial dysplasia at one hospital were selected as the 'training set' (n = 56) whilst those at another hospital were selected for the 'test set' (n = 66). RNA was extracted from formalin-fixed paraffin-embedded (FFPE) diagnostic biopsies and analysed using the NanoString nCounter platform. A targeted panel of 42 genes selected on their association with oral carcinogenesis was used to develop a prognostic gene signature. Following data normalisation, uni- and multivariable analysis, as well as prognostic modelling, were employed to develop and validate the gene signature.

    RESULTS: A prognostic classifier composed of 11 genes was developed using the training set. The multivariable prognostic model was used to predict patient risk scores in the test set. The prognostic gene signature was an independent predictor of malignant transformation when assessed in the test set, with the high-risk group showing worse prognosis [Hazard ratio = 12.65, p = 0.0003].

    CONCLUSIONS: This study demonstrates proof of principle that RNA extracted from FFPE diagnostic biopsies of OPMD, when analysed on the NanoString nCounter platform, can be used to generate a molecular classifier that stratifies the risk of malignant transformation with promising clinical utility.

    Matched MeSH terms: Survival Analysis
  6. Mott JA, Mannino DM, Alverson CJ, Kiyu A, Hashim J, Lee T, et al.
    Int J Hyg Environ Health, 2005;208(1-2):75-85.
    PMID: 15881981 DOI: 10.1016/j.ijheh.2005.01.018
    We investigated the cardiorespiratory health effects of smoke exposure from the 1997 Southeast Asian Forest Fires among persons who were hospitalized in the region of Kuching, Malaysia. We selected admissions to seven hospitals in the Kuching region from a database of all hospital admissions in the state of Sarawak during January 1, 1995 and December 31, 1998. For several cardiorespiratory disease classifications we used Holt-Winters time-series analyses to determine whether the total number of monthly hospitalizations during the forest fire period (August 1 to October 31, 1997), or post-fire period (November 1, 1997 to December 31, 1997) exceeded forecasted estimates established from a historical baseline period of January 1, 1995 to July 31, 1997. We also identified age-specific cohorts of persons whose members were admitted for specific cardiorespiratory problems during January 1 to July 31 of each year (1995--1997). We compared Kaplan-Meier survival curves of time to first readmission for the 1997 cohorts (exposed to the forest fire smoke) with the survival curves for the 1995 and 1996 cohorts (not exposed, pre-fire cohorts). The time-series analyses indicated that statistically significant fire-related increases were observed in respiratory hospitalizations, specifically those for chronic obstructive pulmonary disease (COPD) and asthma. The survival analyses indicated that persons over age 65 years with previous hospital admissions for any cause (chi2(1df) = 5.98, p = 0.015), any cardiorespiratory disease (chi2(1df) = 5.3, p = 0.02), any respiratory disease (chi2(1df) = 7.8, p = 0.005), or COPD (chi2(1df) = 3.9, p = 0.047), were significantly more likely to be rehospitalized during the follow-up period in 1997 than during the follow-up periods in the pre-fire years of 1995 or 1996. The survival functions of the exposed cohorts resumed similar trajectories to unexposed cohorts during the post-fire period of November 1, 1997 to December 31, 1998. Communities exposed to forest fire smoke during the Southeast Asian forest fires of 1997 experienced short-term increases in cardiorespiratory hospitalizations. When an air quality emergency is anticipated, persons over age 65 with histories of respiratory hospitalizations should be preidentified from existing hospitalization records and given priority access to interventions.
    Matched MeSH terms: Survival Analysis
  7. Hamidon BB, Raymond AA
    J Postgrad Med, 2003 Oct-Dec;49(4):307-9; discussion 309-10.
    PMID: 14699227
    Background and purpose: Diabetes mellitus is a strong risk factor for stroke. However, the prognosis in terms of mortality after a stroke is still unclear, especially in diabetic patients. The main purpose of this study was to compare and evaluate the features of stroke in patients having diabetes mellitus with those without diabetes mellitus and to identify factors that influence survival following a stroke.

    Subjects and methods: In a prospective hospital-based study consecutive patients with acute ischaemic stroke were enrolled. A single observer, using predefined diagnostic criteria recorded the demographics, risk factors and the type of stroke and deaths that occurred during the in-patient period.

    Results: One hundred and sixty-three patients with acute ischaemic stroke were enrolled in the study. Type 2 diabetes mellitus was present in 90 (55.2%) patients. Diabetes was a significant independent predictor of mortality (OR 4.88; 95%CI 1.25-19.1). Among the diabetic patients middle cerebral artery (MCA) territory infarct (OR 34.8, 95%CI 4.5-269.4) and Glasgow coma score (GCS) less than 9 (OR 12.3, 95%CI 3.7-198.1) were independent predictors of mortality.

    Conclusions: MCA infarcts and poor conscious level increase the mortality in diabetic patients with stroke. Mortality is also significantly related to a high level of blood glucose at admission.
    Matched MeSH terms: Survival Analysis
  8. Dehghan M, Mente A, Zhang X, Swaminathan S, Li W, Mohan V, et al.
    Lancet, 2017 Nov 04;390(10107):2050-2062.
    PMID: 28864332 DOI: 10.1016/S0140-6736(17)32252-3
    BACKGROUND: The relationship between macronutrients and cardiovascular disease and mortality is controversial. Most available data are from European and North American populations where nutrition excess is more likely, so their applicability to other populations is unclear.

    METHODS: The Prospective Urban Rural Epidemiology (PURE) study is a large, epidemiological cohort study of individuals aged 35-70 years (enrolled between Jan 1, 2003, and March 31, 2013) in 18 countries with a median follow-up of 7·4 years (IQR 5·3-9·3). Dietary intake of 135 335 individuals was recorded using validated food frequency questionnaires. The primary outcomes were total mortality and major cardiovascular events (fatal cardiovascular disease, non-fatal myocardial infarction, stroke, and heart failure). Secondary outcomes were all myocardial infarctions, stroke, cardiovascular disease mortality, and non-cardiovascular disease mortality. Participants were categorised into quintiles of nutrient intake (carbohydrate, fats, and protein) based on percentage of energy provided by nutrients. We assessed the associations between consumption of carbohydrate, total fat, and each type of fat with cardiovascular disease and total mortality. We calculated hazard ratios (HRs) using a multivariable Cox frailty model with random intercepts to account for centre clustering.

    FINDINGS: During follow-up, we documented 5796 deaths and 4784 major cardiovascular disease events. Higher carbohydrate intake was associated with an increased risk of total mortality (highest [quintile 5] vs lowest quintile [quintile 1] category, HR 1·28 [95% CI 1·12-1·46], ptrend=0·0001) but not with the risk of cardiovascular disease or cardiovascular disease mortality. Intake of total fat and each type of fat was associated with lower risk of total mortality (quintile 5 vs quintile 1, total fat: HR 0·77 [95% CI 0·67-0·87], ptrend<0·0001; saturated fat, HR 0·86 [0·76-0·99], ptrend=0·0088; monounsaturated fat: HR 0·81 [0·71-0·92], ptrend<0·0001; and polyunsaturated fat: HR 0·80 [0·71-0·89], ptrend<0·0001). Higher saturated fat intake was associated with lower risk of stroke (quintile 5 vs quintile 1, HR 0·79 [95% CI 0·64-0·98], ptrend=0·0498). Total fat and saturated and unsaturated fats were not significantly associated with risk of myocardial infarction or cardiovascular disease mortality.

    INTERPRETATION: High carbohydrate intake was associated with higher risk of total mortality, whereas total fat and individual types of fat were related to lower total mortality. Total fat and types of fat were not associated with cardiovascular disease, myocardial infarction, or cardiovascular disease mortality, whereas saturated fat had an inverse association with stroke. Global dietary guidelines should be reconsidered in light of these findings.

    FUNDING: Full funding sources listed at the end of the paper (see Acknowledgments).

    Matched MeSH terms: Survival Analysis
  9. Miller V, Mente A, Dehghan M, Rangarajan S, Zhang X, Swaminathan S, et al.
    Lancet, 2017 Nov 04;390(10107):2037-2049.
    PMID: 28864331 DOI: 10.1016/S0140-6736(17)32253-5
    BACKGROUND: The association between intake of fruits, vegetables, and legumes with cardiovascular disease and deaths has been investigated extensively in Europe, the USA, Japan, and China, but little or no data are available from the Middle East, South America, Africa, or south Asia.

    METHODS: We did a prospective cohort study (Prospective Urban Rural Epidemiology [PURE] in 135 335 individuals aged 35 to 70 years without cardiovascular disease from 613 communities in 18 low-income, middle-income, and high-income countries in seven geographical regions: North America and Europe, South America, the Middle East, south Asia, China, southeast Asia, and Africa. We documented their diet using country-specific food frequency questionnaires at baseline. Standardised questionnaires were used to collect information about demographic factors, socioeconomic status (education, income, and employment), lifestyle (smoking, physical activity, and alcohol intake), health history and medication use, and family history of cardiovascular disease. The follow-up period varied based on the date when recruitment began at each site or country. The main clinical outcomes were major cardiovascular disease (defined as death from cardiovascular causes and non-fatal myocardial infarction, stroke, and heart failure), fatal and non-fatal myocardial infarction, fatal and non-fatal strokes, cardiovascular mortality, non-cardiovascular mortality, and total mortality. Cox frailty models with random effects were used to assess associations between fruit, vegetable, and legume consumption with risk of cardiovascular disease events and mortality.

    FINDINGS: Participants were enrolled into the study between Jan 1, 2003, and March 31, 2013. For the current analysis, we included all unrefuted outcome events in the PURE study database through March 31, 2017. Overall, combined mean fruit, vegetable and legume intake was 3·91 (SD 2·77) servings per day. During a median 7·4 years (5·5-9·3) of follow-up, 4784 major cardiovascular disease events, 1649 cardiovascular deaths, and 5796 total deaths were documented. Higher total fruit, vegetable, and legume intake was inversely associated with major cardiovascular disease, myocardial infarction, cardiovascular mortality, non-cardiovascular mortality, and total mortality in the models adjusted for age, sex, and centre (random effect). The estimates were substantially attenuated in the multivariable adjusted models for major cardiovascular disease (hazard ratio [HR] 0·90, 95% CI 0·74-1·10, ptrend=0·1301), myocardial infarction (0·99, 0·74-1·31; ptrend=0·2033), stroke (0·92, 0·67-1·25; ptrend=0·7092), cardiovascular mortality (0·73, 0·53-1·02; ptrend=0·0568), non-cardiovascular mortality (0·84, 0·68-1·04; ptrend =0·0038), and total mortality (0·81, 0·68-0·96; ptrend<0·0001). The HR for total mortality was lowest for three to four servings per day (0·78, 95% CI 0·69-0·88) compared with the reference group, with no further apparent decrease in HR with higher consumption. When examined separately, fruit intake was associated with lower risk of cardiovascular, non-cardiovascular, and total mortality, while legume intake was inversely associated with non-cardiovascular death and total mortality (in fully adjusted models). For vegetables, raw vegetable intake was strongly associated with a lower risk of total mortality, whereas cooked vegetable intake showed a modest benefit against mortality.

    INTERPRETATION: Higher fruit, vegetable, and legume consumption was associated with a lower risk of non-cardiovascular, and total mortality. Benefits appear to be maximum for both non-cardiovascular mortality and total mortality at three to four servings per day (equivalent to 375-500 g/day).

    FUNDING: Full funding sources listed at the end of the paper (see Acknowledgments).

    Matched MeSH terms: Survival Analysis
  10. DeBuysscher BL, de Wit E, Munster VJ, Scott D, Feldmann H, Prescott J
    PLoS Negl Trop Dis, 2013;7(1):e2024.
    PMID: 23342177 DOI: 10.1371/journal.pntd.0002024
    Nipah virus is a zoonotic pathogen that causes severe disease in humans. The mechanisms of pathogenesis are not well described. The first Nipah virus outbreak occurred in Malaysia, where human disease had a strong neurological component. Subsequent outbreaks have occurred in Bangladesh and India and transmission and disease processes in these outbreaks appear to be different from those of the Malaysian outbreak. Until this point, virtually all Nipah virus studies in vitro and in vivo, including vaccine and pathogenesis studies, have utilized a virus isolate from the original Malaysian outbreak (NiV-M). To investigate potential differences between NiV-M and a Nipah virus isolate from Bangladesh (NiV-B), we compared NiV-M and NiV-B infection in vitro and in vivo. In hamster kidney cells, NiV-M-infection resulted in extensive syncytia formation and cytopathic effects, whereas NiV-B-infection resulted in little to no morphological changes. In vivo, NiV-M-infected Syrian hamsters had accelerated virus replication, pathology and death when compared to NiV-B-infected animals. NiV-M infection also resulted in the activation of host immune response genes at an earlier time point. Pathogenicity was not only a result of direct effects of virus replication, but likely also had an immunopathogenic component. The differences observed between NiV-M and NiV-B pathogeneis in hamsters may relate to differences observed in human cases. Characterization of the hamster model for NiV-B infection allows for further research of the strain of Nipah virus responsible for the more recent outbreaks in humans. This model can be used to study NiV-B pathogenesis, transmission, and countermeasures that could be used to control outbreaks.
    Matched MeSH terms: Survival Analysis
  11. Chong YL, Kim O, Poss M
    Virology, 2014 Aug;462-463:309-17.
    PMID: 25010480 DOI: 10.1016/j.virol.2014.06.007
    Genotype VI-paramyxovirus (GVI-PMV1) is a major cause of epidemic Newcastle-like disease in Columbiformes. This genotype of avian paramyxovirus type 1 has diversified rapidly since its introduction into the US in 1982 resulting in two extant lineages, which have different population growth properties. Although some GVI-PMV1s replicate poorly in chickens, it is possible that variants with different replicative or pathogenic potential in chickens exist among the genetically-diverse GVI-PMV1s strains. To determine if variants of Columbiform GVI-PMV1 with different phylogenetic affiliations have distinct phenotypic properties in chickens, we investigated the replicative properties of 10 naturally circulating pigeon-derived isolates representing four subgroups of GVI-PMV1 in primary chicken lung epithelial cells and in chicken embryos. Our data demonstrate that GVI-PMV1 variants have different infection phenotypes in their chicken source host and that properties reflect subgroup affiliation. These subgroup replicative properties are consistent with observed dynamics of viral population growth.
    Matched MeSH terms: Survival Analysis
  12. Ismail NA, Pettitt AN
    Stat Med, 2004 Apr 30;23(8):1247-58.
    PMID: 15083481
    A new method for estimating the time to colonization of Methicillin-resistant Staphylococcus Aureus (MRSA) patients is developed in this paper. The time to colonization of MRSA is modelled using a Bayesian smoothing approach for the hazard function. There are two prior models discussed in this paper: the first difference prior and the second difference prior. The second difference prior model gives smoother estimates of the hazard functions and, when applied to data from an intensive care unit (ICU), clearly shows increasing hazard up to day 13, then a decreasing hazard. The results clearly demonstrate that the hazard is not constant and provide a useful quantification of the effect of length of stay on the risk of MRSA colonization which provides useful insight.
    Matched MeSH terms: Survival Analysis*
  13. Lubis R, Bulgiba A, Kamarulzaman A, Hairi NN, Dahlui M, Peramalah D
    Prev Med, 2013;57 Suppl:S54-6.
    PMID: 23352555 DOI: 10.1016/j.ypmed.2013.01.006
    To determine the predictors of death in Malaysian HIV-infected patients undergoing antiretroviral therapy (ART).
    Matched MeSH terms: Survival Analysis
  14. Wong KW, Lojikip S, Chan FS, Goh KW, Pang HC
    Med J Malaysia, 2017 06;72(3):179-185.
    PMID: 28733566 MyJurnal
    AIM: To study the epidemiology, clinical characteristics, vascular access, and the short term survival of ESRD patients initiated on dialysis from Hospital Queen Elizabeth (HQE).

    BACKGROUND: The number of patients with ESRD is increasing in Sabah, Malaysia. Most patients present late and some live in remote areas with difficult access to healthcare services. Many therefore present with potentially fatal complications.

    METHODS: All the newly confirmed ESRD patients who were initiated on renal replacement therapy (RRT) from 1 January to 31 December 2014 were included. The basic epidemiological and clinical data were collected. They were divided into three groups: Group 1 - those known to the medical service and had been prepared properly for the initiation of RRT; Group 2 - those known to the medical service, but were not prepared for the RRT; Group 3 - those with undiagnosed CKD. Outcome is mainly survival at 3rd, 6th, 9th and 12th month.

    RESULTS: There were 249 ESRD patients. 153 (61.4%) were male. The average age was 53.3 (range 12 - 83). The main cause of ESRD was diabetic nephropathy (128 patients, 51.4%). Most patients were started on RRT with a catheter (74.3%), 47 patients (18.9%) with a fistula, and 17 patients (6.8%) with a Tenckhoff catheter. 185 (74.3%) patients were not prepared properly (Group 2 - 66.3%, and Group 3 - 8.0%). The survival for 249 patients were 86.3% at 6 months, 77.9% at 12 months. Group 2 has the worst survival (81.9% at 6 months, 71.1% at 12 months).

    CONCLUSIONS: Our data showed that most patients (74.3%) were started on dialysis in an unplanned manner with poor survival. A comprehensive and well-supported predialysis programme is needed.
    Matched MeSH terms: Survival Analysis
  15. Wah W, Wai KL, Pek PP, Ho AFW, Alsakaf O, Chia MYC, et al.
    Am J Emerg Med, 2017 Feb;35(2):206-213.
    PMID: 27810251 DOI: 10.1016/j.ajem.2016.10.042
    BACKGROUND: In out of hospital cardiac arrest (OHCA), the prognostic influence of conversion to shockable rhythms during resuscitation for initially non-shockable rhythms remains unknown. This study aimed to assess the relationship between initial and subsequent shockable rhythm and post-arrest survival and neurological outcomes after OHCA.

    METHODOLOGY: This was a retrospective analysis of all OHCA cases collected from the Pan-Asian Resuscitation Outcomes Study (PAROS) registry in 7 countries in Asia between 2009 and 2012. We included OHCA cases of presumed cardiac etiology, aged 18-years and above and resuscitation attempted by EMS. We performed multivariate logistic regression analyses to assess the relationship between initial and subsequent shockable rhythm and survival and neurological outcomes. 2-stage seemingly unrelated bivariate probit models were developed to jointly model the survival and neurological outcomes. We adjusted for the clustering effects of country variance in all models.

    RESULTS: 40,160 OHCA cases met the inclusion criteria. There were 5356 OHCA cases (13.3%) with initial shockable rhythm and 33,974 (84.7%) with initial non-shockable rhythm. After adjustment of baseline and prehospital characteristics, OHCA with initial shockable rhythm (odds ratio/OR=6.10, 95% confidence interval/CI=5.06-7.34) and subsequent conversion to shockable rhythm (OR=2.00,95%CI=1.10-3.65) independently predicted better survival-to-hospital-discharge outcomes. Subsequent shockable rhythm conversion significantly improved survival-to-admission, discharge and post-arrest overall and cerebral performance outcomes in the multivariate logistic regression and 2-stage analyses.

    CONCLUSION: Initial shockable rhythm was the strongest predictor for survival. However, conversion to subsequent shockable rhythm significantly improved post-arrest survival and neurological outcomes. This study suggests the importance of early resuscitation efforts even for initially non-shockable rhythms which has prognostic implications and selection of subsequent post-resuscitation therapy.

    Matched MeSH terms: Survival Analysis
  16. Ho AFW, Hao Y, Pek PP, Shahidah N, Yap S, Ng YY, et al.
    Medicine (Baltimore), 2019 Mar;98(10):e14611.
    PMID: 30855446 DOI: 10.1097/MD.0000000000014611
    Studies are divided on the effect of day-night temporal differences on clinical outcomes in out-of-hospital cardiac arrest (OHCA). This study aimed to elucidate any differences in OHCA survival between day and night occurrence, and the factors associated with differences in survival.This was a prospective, observational study of OHCA cases across multinational Pan-Asian sites. Cases were divided according to time call received by dispatch centers into day (0700H-1900H) and night (1900H-0659H). Primary outcome was 30-day survival. Secondary outcomes were prehospital and hospital modifiable resuscitative characteristics.About 22,501 out of 55,881 cases occurred at night. Night cases were less likely to be witnessed (40.2% vs. 43.1%, P 
    Matched MeSH terms: Survival Analysis
  17. Tanaka H, Ong MEH, Siddiqui FJ, Ma MHM, Kaneko H, Lee KW, et al.
    Ann Emerg Med, 2018 05;71(5):608-617.e15.
    PMID: 28985969 DOI: 10.1016/j.annemergmed.2017.07.484
    STUDY OBJECTIVE: The study aims to identify modifiable factors associated with improved out-of-hospital cardiac arrest survival among communities in the Pan-Asian Resuscitation Outcomes Study (PAROS) Clinical Research Network: Japan, Singapore, South Korea, Malaysia, Taiwan, Thailand, and the United Arab Emirates (Dubai).

    METHODS: This was a prospective, international, multicenter cohort study of out-of-hospital cardiac arrest in the Asia-Pacific. Arrests caused by trauma, patients who were not transported by emergency medical services (EMS), and pediatric out-of-hospital cardiac arrest cases (<18 years) were excluded from the analysis. Modifiable out-of-hospital factors (bystander cardiopulmonary resuscitation [CPR] and defibrillation, out-of-hospital defibrillation, advanced airway, and drug administration) were compared for all out-of-hospital cardiac arrest patients presenting to EMS and participating hospitals. The primary outcome measure was survival to hospital discharge or 30 days of hospitalization (if not discharged). We used multilevel mixed-effects logistic regression models to identify factors independently associated with out-of-hospital cardiac arrest survival, accounting for clustering within each community.

    RESULTS: Of 66,780 out-of-hospital cardiac arrest cases reported between January 2009 and December 2012, we included 56,765 in the analysis. In the adjusted model, modifiable factors associated with improved out-of-hospital cardiac arrest outcomes included bystander CPR (odds ratio [OR] 1.43; 95% confidence interval [CI] 1.31 to 1.55), response time less than or equal to 8 minutes (OR 1.52; 95% CI 1.35 to 1.71), and out-of-hospital defibrillation (OR 2.31; 95% CI 1.96 to 2.72). Out-of-hospital advanced airway (OR 0.73; 95% CI 0.67 to 0.80) was negatively associated with out-of-hospital cardiac arrest survival.

    CONCLUSION: In the PAROS cohort, bystander CPR, out-of-hospital defibrillation, and response time less than or equal to 8 minutes were positively associated with increased out-of-hospital cardiac arrest survival, whereas out-of-hospital advanced airway was associated with decreased out-of-hospital cardiac arrest survival. Developing EMS systems should focus on basic life support interventions in out-of-hospital cardiac arrest resuscitation.

    Matched MeSH terms: Survival Analysis
  18. Law KB, Chang KM, Hamzah NA, Ng KH, Ong TC
    Indian J Hematol Blood Transfus, 2017 Dec;33(4):483-491.
    PMID: 29075058 DOI: 10.1007/s12288-017-0790-3
    The study aimed to investigate the effect of consolidation treatment with fludarabine, high-dose cytarabine and granulocyte colony-stimulating factor or FLAG in older AML patients. The study included 41 eligible patients above 54 years old, who received both induction and consolidation chemotherapy for AML from 2008 to 2013. The study cohort had a minimum 24 months follow-up period. Survival analysis was carried out to assess patients' overall survival and disease free survival based on types of consolidation regimens. The consolidation treatment with FLAG exerted a protective effect to both overall survival and disease free survival in older patients. Patients who were consolidated with FLAG regimen had a significant longer overall survival (log-rank, p = 0.0025) and disease free survival (log-rank, p = 0.0026). The median overall survival was longer (18.70 months) with the use of FLAG when compared to non-FLAG group (8.09 months). The median disease free survival was also longer (13.84 months) with use of FLAG when compared to the non-FLAG group (4.44 months). Regression analysis with Cox model yielded hazard ratio of 0.245 (p = 0.0094) in overall survival and 0.217 (p = 0.0068) in disease free survival. The use of FLAG as consolidation treatment was associated with approximately 60-80% reduction in hazard rates. The result was adjusted for age, race and gender in regression analysis. Older AML patients had longer remission and survival when consolidated with FLAG regimen after the induction chemotherapy.
    Matched MeSH terms: Survival Analysis
  19. Doctor NE, Ahmad NS, Pek PP, Yap S, Ong ME
    Singapore Med J, 2017 07;58(7):456-458.
    PMID: 28741005 DOI: 10.11622/smedj.2017057
    Out-of-hospital cardiac arrest (OHCA) is a global health concern with an incidence rate of 50-60 per 100,000 person-years. To improve OHCA survival rates, several cardiac arrest registries have been set up in North America and Europe, such as the Resuscitation Outcomes Consortium, Cardiac Arrest Registry to Enhance Survival, Ontario Prehospital Advanced Life Support and European Registry of Cardiac Arrest. In Asia, however, there was previously no concerted effort in prehospital emergency care research owing to differences in prehospital emergency medical services systems, data collection methods and outcome reporting between countries. Recognising the need for a collaborative prehospital emergency care research group in Asia, researchers from seven countries in the Asia-Pacific region (including Japan, South Korea, Taiwan, Thailand, United Arab Emirates-Dubai, Singapore and Malaysia) established the Pan-Asian Resuscitation Outcomes Study (PAROS) clinical research network in 2010. This paper gives the overview, methodology and research accomplishments of the PAROS network.
    Matched MeSH terms: Survival Analysis
  20. Yap LB, Nguyen ST, Qadir F, Ma SK, Muhammad Z, Koh KW, et al.
    Acta Cardiol, 2016 Jun;71(3):323-30.
    PMID: 27594128 DOI: 10.2143/AC.71.3.3152093
    Matched MeSH terms: Survival Analysis
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