Displaying publications 81 - 100 of 437 in total

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  1. Fulltext Perception of Cancer Risk and Its Associated Risk Factors among Young Iraqis living in Baghdad
    Alaa H, Shah SA
    Asian Pac J Cancer Prev, 2019 08 01;20(8):2339-2343.
    PMID: 31450904 DOI: 10.31557/APJCP.2019.20.8.2339
    Cancer is responsible for substantial burden on communities and more specifically on less developed countries. The incidence of cancer is on the rise due to population growth and aging, also due to increment of the risk factors such as smoking, increasing weight, low physical activity associated with adoption of western lifestyle. Around 14 million cases of new cancer and 8 million deaths from cancer is estimated to occur by 2012. This cross-sectional study was conducted in Baghdad from June 2016 to October 2016. Participants were selected according to our inclusion criteria, namely aged between 18 to 40 years and not being diagnosed with any chronic diseases. Those who fulfilled the inclusion criteria were 700 participants who completed the questionnaire. Results showed that most of our participants had low perceived susceptibility to cancer risk (62.4%), low perceived severity (59.8%), but good perceived benefits of screening (56.6%). Hierarchal linear regression analysis showed that sociodemographic factors of gender, marital status, and education level were statistically significant. Moreover, factors of health behaviour such as practice towards health and preventive behaviour were associated with the outcome. Finally, treatment control and emotional factors were mostly predicting the outcome. Perceived susceptibility to cancer along with its psychological factors and behaviour were important contributors to self-perceived health in this study. Hence there is association between perception and future morbidity and mortality, thus it is crucial for public health policy. Comprehensive health programs that include health promotion campaigns and proper health care services that deals with secondary prevention.
    Matched MeSH terms: Regression Analysis
  2. Fulltext Lipoprotein (A) levels in type 2 diabetic patients with diabetic retinopathy
    Ergün UGO, Oztüzün S, Seydaoglu G
    Med J Malaysia, 2004 Aug;59(3):406-10.
    PMID: 15727389
    To examine a possible association between lipoprotein(a) [Lp(a)] levels and diabetic retinopathy in patients with type 2 diabetes mellitus. 100 type 2 diabetic patients were assessed with the following parameters: age, body mass index, duration of diabetes, blood pressure, fasting plasma glucose, total cholesterol, HDL-cholesterol, triglycerides, blood urea nitrogen, creatinine, Lp(a), and albumin excretion rate (AER). Retinopathy was classified as normal retina (NR), non-proliferative diabetic retinopathy (NPDR), and proliferative diabetic retinopathy (PDR) by an ophthalmologist. The PDR group had higher cholesterol (t=-2.24, p<0.05) and creatinine (z=-2.547, p<0.05) levels than the NPDR group. The PDR group had a higher value of AER (z=-2.439, p<0.01) than the NR group. The possibility of developing diabetic retinopathy after 10 years of diabetes was found to be 6.5 fold high (OR; 6.57, 95% CI 1.74-24.79; p<0.05). The Lp(a) levels were similar in the patients with retinopathy and those without retinopathy. In the study, there was no evidence for a relationship between the serum Lp(a) levels and diabetic retinopathy in type 2 diabetic patients.
    Study site: diabetic outpatient clinic at Haydarpasa Numune Education and Research Hospital in Istanbul, Turkey.
    Matched MeSH terms: Regression Analysis
  3. Integration of the free liquid membrane into electrokinetic supercharging - capillary electrophoresis for the determination of cationic herbicides in environmental water samples
    Chui MQ, Thang LY, See HH
    J Chromatogr A, 2017 Jan 20;1481:145-151.
    PMID: 28017568 DOI: 10.1016/j.chroma.2016.12.042
    A new approach based on the integration of the free liquid membrane (FLM) into electrokinetic supercharging (EKS) was demonstrated to be a new powerful tool used in order to enhance online preconcentration efficiency in capillary electrophoresis (CE). A small plug of water immiscible organic solvent was used as a membrane interface during the electrokinetic sample injection step in EKS in order to significantly enhance the analyte stacking efficiency. The new online preconcentration strategy was evaluated for the determination of paraquat and diquat present in the environmental water samples. The optimised FLM-EKS conditions employed were as follows: hydrodynamic injection (HI) of 20mM potassium chloride as leading electrolyte at 50mbar for 75s (3% of the total capillary volume) followed by the HI of tris(2-ethylhexyl) phosphate (TEHP) as FLM at a 1mm length (0.1% of the capillary volume). The sample was injected at 10kV for 360s, followed by the HI of 20mM cetyl trimethylammonium bromide (CTAB) as terminating electrolyte at 50mbar for 50s (2% of the total capillary volume). The separation was performed in 12mM ammonium acetate and 30mM NaCl containing 20% MeOH at +25kV with UV detection at 205nm. Under optimised conditions, the sensitivity was enhanced between 1500- and 1866-fold when compared with the typical HI at 50mbar for 50s. The detection limit of the method for paraquat and diquat was 0.15-0.20ng/mL, with RSDs below 5.5%. Relative recoveries in spiked river water were in the range of 95.4-97.5%. A comparison was also made between the proposed approach with sole preconcentration of the field-enhanced sample injection (FASI) and EKS in the absence of the FLM.
    Matched MeSH terms: Regression Analysis
  4. Step-down units are cost-effective alternatives to coronary care units with non-inferior outcomes in the management of ST-elevation myocardial infarction patients after successful primary percutaneous coronary intervention
    Chou YS, Lin HY, Weng YM, Goh ZNL, Chien CY, Fan HJ, et al.
    Intern Emerg Med, 2020 01;15(1):59-66.
    PMID: 30706252 DOI: 10.1007/s11739-019-02037-z
    Percutaneous coronary interventions (PCIs) within a door-to-balloon timing of 90 min have greatly decreased mortality and morbidity of ST-elevation myocardial infarction (STEMI) patients. Post-PCI, they are routinely transferred into the coronary care unit (CCU) regardless of the severity of their condition, resulting in frequent CCU overcrowding. This study assesses the feasibility of step-down units (SDUs) as an alternative to CCUs in the management of STEMI patients after successful PCI, to alleviate CCU overcrowding. Criteria of assessment include in-hospital complications, length of stay, cost-effectiveness, and patient outcomes up to a year after discharge from hospital. A retrospective case-control study was done using data of 294 adult STEMI patients admitted to the emergency departments of two training and research hospitals and successfully underwent primary PCI from 1 January 2014 to 31 December 2015. Patients were followed up for a year post-discharge. Student t test and χ2 test were done as univariate analysis to check for statistical significance of p 
    Matched MeSH terms: Regression Analysis
  5. Age at death estimation from bone histology in Malaysian males
    Nor FM, Pastor RF, Schutkowski H
    Med Sci Law, 2014 Oct;54(4):203-8.
    PMID: 24189643 DOI: 10.1177/0025802413506573
    Estimation of age from microscopic examination of human bone utilizes bone remodeling. This allows 2 regression equation to be determined in a specific population based on the variation in osteon turnover in different populations. The aim of this study was to provide age estimation for Malaysian males. Ground undecalcified cross sections were prepared from long limb bones of 50 deceased males aged between 21 and 78 years. Ten microstructural parameters were measured and subjected to multivariate regression analysis. Results showed that osteon count had the highest correlation with age (R = 0.43), and age was estimated to be within 10.94 years of the true value in 98% of males. Cross validation of the equation on 50 individuals showed close correspondence of true ages with estimated ages. Further studies are needed to validate and expand these results.
    Matched MeSH terms: Regression Analysis
  6. Fulltext Perceptions of dental stress and social support among Malaysian dental students
    Rajesh, S.M., Muirhead, V., Mohd Dom, T.N., Ismail, N.M., Jamaludin, M., Saub, R.
    Ann Dent, 2013;20(1):1-7.
    MyJurnal
    To explore the association between social
    support and stress levels in preclinical and clinical dental
    students in Malaysia. Method: A cross sectional survey
    of dental undergraduate students was conducted at the
    Faculty of Dentistry, University of Malaya, Universiti
    Kebangsaan Malaysia and Universiti Sains Malaysia.
    Stress was measured using the Dental Environment Stress
    (DES) questionnaire. A DES-32 item was used to measure
    stress for the clinical students and DES-16 item for the
    preclinical students. Four questions were used to measure
    social support. The total stress scores were standardized
    for comparison purposes. Results: A total of 357 (79.7%)
    preclinical and 417 (71.8%) clinical undergraduate dental
    students responded to the questionnaires. The clinical
    students experienced higher stress [mean standardized
    DES score = 72.63, SD = 10.64] than preclinical students
    [mean standardized DES score = 70.19, SD=12.01]. The
    two most stressful items reported by preclinical students
    were “fear of failing” and “examination and grades”.
    Among clinical students, the two most stressful items related
    to academic were “completing course requirement” and
    “fear of failing course” and items related to clinical session
    were “fear of being barred due to the clinical schedule”
    and “patients late or absent”. Multiple regression analyses
    revealed that low stress levels among preclinical students
    were significantly associated to a lot of contact with
    students of the same course. Conclusion: To some extent,
    social support does play a role in explaining differences in
    perceived stress, in particular among preclinical students.
    Matched MeSH terms: Regression Analysis
  7. Fulltext Risk factors for anti tuberculous drugs induced hepatitis: a prospective survey from a chest clinic in a general hospital
    Fauzi ARM, Shah A, Rathor MY, Satwi S
    Med J Malaysia, 2004 Mar;59(1):72-7.
    PMID: 15535339
    A prospective survey on 14 consecutive cases with tuberculous drug induced hepatitis was done at our chest clinic in a state general hospital over a period of 15 months. There were 30 controls chosen randomly from the chest clinic register. The cases had lower mean body mass index (P<0.008), serum albumin (P<0.005) and higher serum globulin (P<0.04). Serum liver transaminases and total bilirubin rose significantly during the acute episode of drug induced hepatitis. Among the risk factors studied, only chronic hepatitis B carrier status was found to be more prevalent among the cases. There was one death (7.1%) over the whole study period.
    Study site: Chest clinic, Hospital Tengku Ampuan Afzan (HTAA), Kuantan, Pahang, Malaysia
    Matched MeSH terms: Regression Analysis
  8. Forecasting peak asthma admissions in London: an application of quantile regression models
    Soyiri IN, Reidpath DD, Sarran C
    Int J Biometeorol, 2013 Jul;57(4):569-78.
    PMID: 22886344 DOI: 10.1007/s00484-012-0584-0
    Asthma is a chronic condition of great public health concern globally. The associated morbidity, mortality and healthcare utilisation place an enormous burden on healthcare infrastructure and services. This study demonstrates a multistage quantile regression approach to predicting excess demand for health care services in the form of asthma daily admissions in London, using retrospective data from the Hospital Episode Statistics, weather and air quality. Trivariate quantile regression models (QRM) of asthma daily admissions were fitted to a 14-day range of lags of environmental factors, accounting for seasonality in a hold-in sample of the data. Representative lags were pooled to form multivariate predictive models, selected through a systematic backward stepwise reduction approach. Models were cross-validated using a hold-out sample of the data, and their respective root mean square error measures, sensitivity, specificity and predictive values compared. Two of the predictive models were able to detect extreme number of daily asthma admissions at sensitivity levels of 76 % and 62 %, as well as specificities of 66 % and 76 %. Their positive predictive values were slightly higher for the hold-out sample (29 % and 28 %) than for the hold-in model development sample (16 % and 18 %). QRMs can be used in multistage to select suitable variables to forecast extreme asthma events. The associations between asthma and environmental factors, including temperature, ozone and carbon monoxide can be exploited in predicting future events using QRMs.
    Matched MeSH terms: Regression Analysis
  9. Use of Alternative Medications for Menopause-Related Symptoms in Three Major Ethnic Groups of Ipoh, Perak, Malaysia
    Ohn Mar S, Malhi F, Syed Rahim SH, Chua CT, Sidhu SS, Sandheep S
    Asia Pac J Public Health, 2015 Nov;27(8 Suppl):19S-25S.
    PMID: 25972428 DOI: 10.1177/1010539515586457
    This cross-sectional study investigated the use of alternative medications to alleviate menopause-related symptoms among Malay, Chinese, and Indian women of Ipoh city. The prevalence, types, effectiveness, and associated factors were determined. The prevalence of alternative medication use was 41.4%. Evening primrose oil (EPO) was the most popular medication used (18.1%), followed by soy-based products (12.3%), green tea (6.8%), and gingko (5.8%). The medication was reported to be highly effective by 58.3% of soya bean diet users and 41.1% of EPO users. Significant variables associated with the use were Chinese or Indian ethnicity (P < .001), age between 50 and 54 years (P < .01), lower self-health rating (P < .05), education level of diploma or professional degree (P < .05), employment as professionals or entrepreneurs (P < .05), and the use of hormone replacement therapy (P < .05). Regression analysis showed that Chinese and Indians had significantly higher odds for the use than Malays (Chinese: odds ratio [OR] = 4.33, 95% confidence interval [CI] = 2.392-7.837; Indians: OR = 3.248, 95% CI = 1.586-6.654).
    Matched MeSH terms: Regression Analysis
  10. Fulltext Risk factors for hip fracture in Asian men and women: the Asian osteoporosis study
    Lau EM, Suriwongpaisal P, Lee JK, Das De S, Festin MR, Saw SM, et al.
    J. Bone Miner. Res., 2001 Mar;16(3):572-80.
    PMID: 11277276 DOI: 10.1359/jbmr.2001.16.3.572
    The objectives of the Asian Osteoporosis Study (AOS) were to determine risk factors for hip fracture in men and women in four Asian countries, that is, Singapore, Malaysia, Thailand, and the Philippines. A total of 451 men and 725 women (aged 50 years and over) with hip fractures were compared with an equal number of community controls. A standardized questionnaire was administered by interview. The following relative risks (RRs) were found in women and men by multiple logistic regression: dietary calcium intake < 498 mg/day, 2.0 for women (95% CI, 1.5-2.8) and 1.5 for men (95% CI, 1.0-2.2); no load bearing activity in the immediate past, 2.0 for women (95% CI, 1.4-2.7) and 3.4 for men (95% CI, 2.3-5.1); no vigorous sport activities in young adulthood, 7.2 for women (95% CI, 4.0-13.0) and 2.4 for men (95% CI, 1.6-3.6); cigarette smoking, 1.5 for men (95% CI, 1.0-2.1); alcohol consumption 7 days a week, 2.9 for women (95% CI, 1.0-8.6) and 1.9 for men (95% CI, 1.1-3.2); fell twice or more in the last 12 months, 3.0 for women (95% CI, 1.8-4.8) and 3.4 for men (95% CI, 1.8-6.6); a history of fractures after 50 years of age, 1.8 for women (95% CI, 1.1-2.9) and 3.0 for men (95% CI, 1.6-5.6); a history of stroke, 3.8 for women (95% CI, 2.0-7.1) and 3.6 for men (95% CI, 1.8-7.1); use of sedatives, 2.5 for women (95% CI, 1.0-6.3) and 3.0 for men (95% CI, 1.0-9.7); and use of thyroid drugs, 7.1 for women (95% CI, 2.0-25.9) and 11.8 for men (95% CI, 1.3-106.0). Women who were 1.56 m or taller had an RR of 2.0 (95% CI, 1.3-3.0) for hip fracture and men who were 1.69 m or taller had an RR of 1.9 (95% CI, 1.2-3.1) for hip fracture. Based on these findings, primary preventive programs for hip fracture could be planned in Asia.
    Matched MeSH terms: Regression Analysis
  11. Fulltext Hybrid support vector regression and autoregressive integrated moving average models improved by particle swarm optimization for property crime rates forecasting with economic indicators
    Alwee R, Shamsuddin SM, Sallehuddin R
    ScientificWorldJournal, 2013;2013:951475.
    PMID: 23766729 DOI: 10.1155/2013/951475
    Crimes forecasting is an important area in the field of criminology. Linear models, such as regression and econometric models, are commonly applied in crime forecasting. However, in real crimes data, it is common that the data consists of both linear and nonlinear components. A single model may not be sufficient to identify all the characteristics of the data. The purpose of this study is to introduce a hybrid model that combines support vector regression (SVR) and autoregressive integrated moving average (ARIMA) to be applied in crime rates forecasting. SVR is very robust with small training data and high-dimensional problem. Meanwhile, ARIMA has the ability to model several types of time series. However, the accuracy of the SVR model depends on values of its parameters, while ARIMA is not robust to be applied to small data sets. Therefore, to overcome this problem, particle swarm optimization is used to estimate the parameters of the SVR and ARIMA models. The proposed hybrid model is used to forecast the property crime rates of the United State based on economic indicators. The experimental results show that the proposed hybrid model is able to produce more accurate forecasting results as compared to the individual models.
    Matched MeSH terms: Regression Analysis
  12. Determinants of breastfeeding duration in Peninsular Malaysia
    Awang H, Salleh AL
    Asia Pac J Public Health, 2000;12(2):102-6.
    PMID: 11836918
    The health benefits of breastfeeding to infants and mothers have been well recognised. This study applies linear regression analysis to assess the determinants of breastfeeding duration of first born using data from the Second Malaysian Family Life Survey. The proportion of women who breastfed their first child is 82 percent, of which 97 percent reported their breastfeeding duration. The distribution of breastfeeding duration has a mean of 5.7 months and a median of two months. Important determinants of breastfeeding duration include maternal age, ethnicity, period of first birth, husband's occupation and work status of the woman.
    Matched MeSH terms: Regression Analysis
  13. Fulltext Evaluation of extra virgin olive oil adulteration with edible oils using ATR-FTIR spectroscopy
    Nuraznee Mashodi, Nurul Yani Rahim, Norhayati Muhammad, Saliza Asman
    Malaysian Journal of Applied Sciences, 2020;5(1):35-44.
    MyJurnal
    Extra virgin olive oil (EVOO) is categorized as expensive oil due to high-quality nutritional value. Unfortunately, EVOO is easily adulterated with other low-quality edible oils. Therefore, this study was done to differentiate and analyze the adulteration of EVOO with other edible oils using Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy. The study was used several edible oils included canola oil, corn oil, sunflower oil, and soybean oil as an adulterant for EVOO. The adulterant EVOO samples were prepared by mixing with dissimilar concentrations of the solely edible oils (20 %, 40 %, 60 % and 80 % (v/v)). The main functional groups of EVOO and other edible oils are O-H, C-H, C=C and C=O groups were assigned around 3500 cm-1, 2925 cm-1, 3006 cm-1 and 1745 cm-1 wavenumbers, respectively. From the comparison of EVOO and other adulterant edibles oil spectra, it showed that the EVOO has the lowest absorbance intensity at around 3006 cm-1 represented double bond which is closely related to the composition of oil sample. The adulteration of EVOO was evaluated by analysing the changes in the absorbance based on the linear regression analysis graph of the bands at 3006 and 2925 cm-1 and the limit of detection (LOD) was measured. The graph of A3008/A2925 with good relative coefficients (R2) and lower LOD is more favourable than the linear regression graph of A3006 versus percentage of edible oils added in EVOO. This study showed that ATR-FTIR spectroscopy is a convenient tool for analysing the adulteration of EVOO.
    Matched MeSH terms: Regression Analysis
  14. Predicting of the refractive index of haemoglobin using the Hybrid GA-SVR approach
    Oyehan TA, Alade IO, Bagudu A, Sulaiman KO, Olatunji SO, Saleh TA
    Comput Biol Med, 2018 07 01;98:85-92.
    PMID: 29777986 DOI: 10.1016/j.compbiomed.2018.04.024
    The optical properties of blood play crucial roles in medical diagnostics and treatment, and in the design of new medical devices. Haemoglobin is a vital constituent of the blood whose optical properties affect all of the optical properties of human blood. The refractive index of haemoglobin has been reported to strongly depend on its concentration which is a function of the physiology of biological cells. This makes the refractive index of haemoglobin an essential non-invasive bio-marker of diseases. Unfortunately, the complexity of blood tissue makes it challenging to experimentally measure the refractive index of haemoglobin. While a few studies have reported on the refractive index of haemoglobin, there is no solid consensus with the data obtained due to different measuring instruments and the conditions of the experiments. Moreover, obtaining the refractive index via an experimental approach is quite laborious. In this work, an accurate, fast and relatively convenient strategy to estimate the refractive index of haemoglobin is reported. Thus, the GA-SVR model is presented for the prediction of the refractive index of haemoglobin using wavelength, temperature, and the concentration of haemoglobin as descriptors. The model developed is characterised by an excellent accuracy and very low error estimates. The correlation coefficients obtained in these studies are 99.94% and 99.91% for the training and testing results, respectively. In addition, the result shows an almost perfect match with the experimental data and also demonstrates significant improvement over a recent mathematical model available in the literature. The GA-SVR model predictions also give insights into the influence of concentration, wavelength, and temperature on the RI measurement values. The model outcome can be used not only to accurately estimate the refractive index of haemoglobin but also could provide a reliable common ground to benchmark the experimental refractive index results.
    Matched MeSH terms: Regression Analysis
  15. New method for distance-based close following safety indicator
    Sharizli AA, Rahizar R, Karim MR, Saifizul AA
    Traffic Inj Prev, 2015;16(2):190-5.
    PMID: 24827899 DOI: 10.1080/15389588.2014.921913
    The increase in the number of fatalities caused by road accidents involving heavy vehicles every year has raised the level of concern and awareness on road safety in developing countries like Malaysia. Changes in the vehicle dynamic characteristics such as gross vehicle weight, travel speed, and vehicle classification will affect a heavy vehicle's braking performance and its ability to stop safely in emergency situations. As such, the aim of this study is to establish a more realistic new distance-based safety indicator called the minimum safe distance gap (MSDG), which incorporates vehicle classification (VC), speed, and gross vehicle weight (GVW).
    Matched MeSH terms: Regression Analysis
  16. Risk factors associated with hearing loss in term neonates with hyperbilirubinaemia
    Boo NY, Oakes M, Lye MS, Said H
    J Trop Pediatr, 1994 Aug;40(4):194-7.
    PMID: 7932930
    A study of 128 jaundiced term neonates showed that 28 (22 per cent) had hearing loss based on brain stem-evoked response. There was no significant difference in the percentage of neonates with hearing loss between those with peak serum bilirubin levels of less than 340 mumol/l (16 per cent) and those with hyperbilirubinaemia > 339 mumol/l (33 per cent) (P = 0.11). Logistic regression analysis showed that severe jaundice which required exchange transfusion and earlier age of onset of hyperbilirubinaemia were statistically significant risk factors associated with hearing loss (P = 0.038 and P = 0.012, respectively).
    Matched MeSH terms: Regression Analysis
  17. Knowledge, attitude and practice of food utensils hygiene amongst food handlers in Kuala Pilah, Negeri Sembilan, Malaysia
    Siti Nurul Ain Saipullizan, Razalee Sedek, Sahilah Abd. Mutalib
    Sains Malaysiana, 2018;47:1527-1533.
    This study aimed to evaluate the level of knowledge, attitude and practice (KAP) amongst food handlers in food utensils
    hygiene and presence of bacterial contamination on food utensils. There were two approaches used in this study. In the
    first approach, 134 of food handlers from 75 food premises were interviewed via questionnaires to assess their knowledge,
    attitude and practice. In the second approach, the presence of Staphylococcus aureus, Escherichia coli and total coliform
    of 225 utensils (knives (75), chopping boards (75) and dish plates (75)) was examined. The result showed that the food
    handlers had sufficient level of knowledge (80.5%), attitude (87.4%) and practice (90.1%). Highest contamination was
    found on the chopping boards for the presence of S. aureus (82.8%), E. coli (9.7%) and total coliform (73.9%). Logistic
    regression analysis showed that knowledge contributes to the presence of E. coli on the dish plates; and total coliform
    on the knives. Thus, ongoing training that focused on food utensils hygiene must be emphasized to improve knowledge,
    attitude and practice amongst the food handlers.
    Matched MeSH terms: Regression Analysis
  18. Fulltext Impact of decomposition of autonomic tonic and phasic responses on predictors of reaction performance in elite Malaysian swimmers
    Saha, Srilekha, Saha, Soumendra
    Movement Health & Exercise, 2014;3(1):15-25.
    MyJurnal
    Psychobiological predictors of emotionality were evaluated in relations to complex reaction and movement performances have been considered as the significant aspect of research interest. Considerable research base confirms that the expert players employ more pertinent search strategies, eliminate irrelevant cues which enable them to effectively anticipate action requirements and they have superior ability to use cue-related information to reliably anticipate occurrence of relevant events. Present study was aimed at identification of intricate relationship between the ability of the high performing swimmers (National - level swimmers of Malaysia) in anticipatory cue-utilization and corresponding autonomic phasic skin conductance responses isolated from the tonic measures. Altogether two-hundred and twenty-five individuals having high athletic calibre, and holding top-positions in recently held (within the period March 2011 up to the June 2011) National and International (Mostly ASEAN level) meets volunteered as the participants in this study. Simultaneous evaluation of autonomic arousal modulation (habituation paradigm tonic and phasic measures of skin conductance) was done when the swimmers were engaged in cue-related anticipatory task, associated with complex reaction performance. For this purpose, participants were evaluated intermittently (twice within the calendar year August 2010 - June 2011) with the identical research paradigm. Perceived sense of competence as well as the subjective feelings of apprehension of loosing was explored, and attempts were made to identify the obscure subjective expression of cognitive-emotional make-up, in explaining differential performance outcomes evident in the participants. Findings of multiple linear and polynomial regression analyses however suggested direct, inverse and supportive relationships between decomposition of skin conductance tonic and phasic autonomic components related to cognitive-affective and affective motivational aspects of sports behaviour explaining pathways to both excellent and debilitative performance outcomes during practice sessions as well as in actual competitive situations.
    Matched MeSH terms: Regression Analysis
  19. Regression equations for sex and population detection using the lip print pattern among Egyptian and Malaysian adult
    Abdel Aziz MH, Badr El Dine FM, Saeed NM
    J Forensic Leg Med, 2016 Nov;44:103-110.
    PMID: 27743546 DOI: 10.1016/j.jflm.2016.10.003
    INTRODUCTION: Identification of sex and ethnicity has always been a challenge in the fields of forensic medicine and criminal investigations. Fingerprinting and DNA comparisons are probably the most common techniques used in this context. However, since they cannot always be used, it is necessary to apply different and less known techniques such as lip prints.

    AIM OF THE WORK: Is to study the pattern of lip print in Egyptian and Malaysian populations and its relation to sex and populations difference. Also, to develop equations for sex and populations detection using lip print pattern by different populations (Egyptian and Malaysian).

    SUBJECTS AND METHODS: The sample comprised of 120 adults volunteers divided into two ethnic groups; sixty adult Egyptians (30 males and 30 females) and sixty adult Malaysians (30 males and 30 females). The lip prints were collected on a white paper. Each lip print was divided into four compartments and were classified and scored according to Suzuki and Tsuchihashi classification. Data were statistically analyzed.

    RESULTS: The results showed that type III lip print pattern (intersected grooves) was the predominant type in both the Egyptian and Malaysian populations. Type II and III were the most frequent in Egyptian males (28.3% each), while in Egyptian females type III pattern was predominant (46.7%). As regards Malaysian males, type III lip print pattern was the predominant one (41.7%), while type II lip print pattern was predominant (30.8%) in Malaysian females. Statistical analysis of different quadrants showed significant differences between males and females in the Egyptian population in the third and fourth quadrants. On the other hand, significant differences were detected only in the second quadrant between Malaysian males and females. Also, a statistically significant difference was present in the second quadrant between Egyptian and Malaysian males. Using the regression analysis, four regression equations were obtained.

    Matched MeSH terms: Regression Analysis
  20. Fulltext Bioactive Molecule Prediction Using Extreme Gradient Boosting
    Babajide Mustapha I, Saeed F
    Molecules, 2016 Jul 28;21(8).
    PMID: 27483216 DOI: 10.3390/molecules21080983
    Following the explosive growth in chemical and biological data, the shift from traditional methods of drug discovery to computer-aided means has made data mining and machine learning methods integral parts of today's drug discovery process. In this paper, extreme gradient boosting (Xgboost), which is an ensemble of Classification and Regression Tree (CART) and a variant of the Gradient Boosting Machine, was investigated for the prediction of biological activity based on quantitative description of the compound's molecular structure. Seven datasets, well known in the literature were used in this paper and experimental results show that Xgboost can outperform machine learning algorithms like Random Forest (RF), Support Vector Machines (LSVM), Radial Basis Function Neural Network (RBFN) and Naïve Bayes (NB) for the prediction of biological activities. In addition to its ability to detect minority activity classes in highly imbalanced datasets, it showed remarkable performance on both high and low diversity datasets.
    Matched MeSH terms: Regression Analysis
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