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  1. Fulltext Kinetic modelling of ethanol fermentation process using cassava (Manihot esculenta) starch as carbon source
    Low, C.Y., Hii, S.L., Leong, L.K., Yim, Y.Y., Tan, H.W.
    ASM Science Journal, 2012;6(1):61-66.
    MyJurnal
    Cassava starch was used as feedstock for production of bioethanol by Saccharomyces cerevisiae. The cassava starch was hydrolyzed using commercial α-amylase and glucoamylase enzymes followed by a batch ethanol fermentation process using saccharified starch slurry. By using 110 g/L of reducing sugar from saccharified starch slurry, the ethanol yield was promising with maximum ethanol concentration of 20.6 g/L recorded after 55 hours of cultivation process. Three different models - the Logistic model, Luedeking-Piret-like equation and Gompertz equation - were used to characterize and explain the cell growth, reducing sugar consumption and production formation, respectively. The kinetic parameters were estimated by fitting the experimental data to the proposed models using non-linear regression analysis. The correlation coefficient r2 values for the Logistic model, Luedeking-Piret-like equation and the Gompertz equation were 0.994, 0.996 and 0.990, respectively. The high correlation coefficient values indicate that the proposed models were able to describe the ethanol fermentation process.
    Matched MeSH terms: Logistic Models
  2. Fulltext The association between the attention deficit hyperactivity disorder(ADHD) symptoms and bully/victim problem among malaysian sixth-graders
    Wan Ismail WS, Nik Jaafar NR, Mohd Daud TI, Shah SA, Ismail A, Shafiee Z
    ASEAN Journal of Psychiatry, 2010;11(1):79-86.
    MyJurnal
    Objective: School bullying in Malaysia is on the rise. While efforts are put together to combat the problem, the psychiatric aspect has been neglected. This is a cross-sectional study aimed to determine the association between the symptoms of ADHD and bully/victim problems among Malaysian sixthgraders attending primary schools in Kuala Lumpur.
    Methods: A total of 410 sixth-graders from seven randomly selected schools were assessed with regards to bully/victim problems and ADHD symptoms using self-reported questionnaires. Malaysian Bullying Questionnaire was used to rate bully/victim problems while ADHD symptoms were assessed using ConnersWells’ Adolescent Self-report Scale (CASS). Teachers and parents also assessed students’ ADHD symptoms using Conner’s Teachers Rating Scale (CTRS) and Conner’s Parents Rating Scale (CPRS), respectively.
    Results: Self-reported questionnaires showed that 61.2% of the children were involved in bully/victim problems. The ADHD symptoms were found significant in relation to bully/victim problems as tested by multiple logistic regression. Only students and parents reported significant ADHD symptoms among the bully/victim groups. The ADHD symptoms reported by students were significant among bullies(OR=0.59,CI=0.42-0.83, p
    Matched MeSH terms: Logistic Models
  3. Fulltext Perceived norms and smoking status among secondary school students in Kota Tinggi, Johor, Malaysia
    Lim, Kuang Hock, Sumarni Mohd Ghazali, Kee, Chee Cheong, Hejar Abdul Rahman, Amal Nasir Mustafa
    Int J Public Health Res, 2012;2(1):85-92.
    MyJurnal
    Accepted 8 February 2012.
    Introduction Social norms, though an important contributing factor of adolescent smoking in developed countries, has not been extensively studied in Malaysia. The objective of this study was to determine the association between certain perceived norms regarding smoking with smoking status among Malaysian secondary school students in Kota Tinggi, Johor.
    Methods Data were collected from 2311 respondents consisting of 1379 male and 923 female secondary school students in Kota Tinggi district via a self administered questionnaire. Five perceived norms regarding smoking were assessed, namely: perceived peer smoking prevalence, perceived parental reaction towards adolescent smoking, perceived public perception of adolescent smoking, ever noticed peers smoking inside and outside school and perceived enforcement of anti-smoking policy in school and their association with smoking status. Multiple logistic regressions controlling for gender, peer smoking and family smoking was performed.
    Results Of the five perceived norms, four were associated with smoking status, (perceived peer smoking prevalence (p
    Matched MeSH terms: Logistic Models
  4. Fulltext The association of birth order and sociodemographic factors with caries experience among adolescents in Tumpat
    Wan Salina, W.S., Nizam, A., Naing, L.
    Archives of Orofacial Sciences, 2007;2(1):45-50.
    MyJurnal
    Sociodemographic factors have received considerable attention in the literature with regards its relationship with caries. However, the related information among children ages 12-17 is fairly limited. Birth order has been consistently found to be associated with diseases hypothesized to have an infectious aetiology but only few studies have examined its relationship with dental caries. The aims of this study were to determine the association of birth order and the sociodemographic background of subjects with caries and high caries experience among 16-year-old schoolchildren in Tumpat district, Kelantan. This was a case-control study. A total of 1087 16-year-old schoolchildren were examined intraorally for their caries status. They were categorized into three groups namely caries free (DMFS=0) mild caries (DMFS= 1-7) and high caries (DMFS ≥8) group based on DMFS score. Cases were the caries group and the controls were the caries free group. In each group, 163 subjects were selected by using simple random sampling. A questionnaire was used to obtain personal information of the subjects, birthweight and sociodemographic background. Analysis involved was ordinal logistic regression. The factor that was found to have association with caries and high caries experience determined using multiple ordinal logistic regression analysis was educational level of parents (OR=1.55, 95% CI: 1.06; 2.28). This study showed that birth order was not a significant factor associated with caries experience. Among the sociodemographic factors, only parent’s educational level was found to be associated with caries and high caries experience.
    Matched MeSH terms: Logistic Models
  5. Fulltext Blood pressure patterns and the prevalence of hypertension and its associated factors in a rural community in Northern Malaysia
    Narayan, K.A., A Rashid, K.
    Malaysian Journal of Public Health Medicine, 2007;7(1):14-19.
    MyJurnal
    This study was conducted to study the blood pressure pattern and the prevalence of hypertension and its associated factors in a rural community in two coastal villages in rural Kedah, Mahysia. Out of the total population 504 were above 20 years of age and were eligible to participate. There were 227 males and 252 females. The mean systolic blood pressure was found to rise with age, peaking in the 6l·70 years age group, For women the mean blood pressure rose earlier from the age group of 4-l· 50 years. Mean blood pressures rose with increasing body mass index. lt also varied with occupation and education. The retired and unemployed had a higher blood pressure than those employed and there was an inverse relationship with increasing education. The prevalence of hypertension was 33.6%. More females were hypertensive (36.5%) as compared to males (3 0.4%) and this finding was the same for both systolic and diastolic hypertension. Majority (71.4%) of the hypertensives were undiagnosed. 72.5% of hypertensives who were on treatment were not under control. Hypertension was more prevalent among retirees and illiterates. Prevalence of hypertension increased correspondingly with age. Obesity was associated with hypertension. There was no association with family history of hypertension. Multiple logistic regression showed a positive association only for obesity. ln conclusion, given the high prevalence of hypertension at
    present, it appears that the prevalence will increase as each age cohort grows older. Obesity, especially among housewives is a significant assorted factor.
    Matched MeSH terms: Logistic Models
  6. Fulltext A population-based study on the prevalence and factors associated with obesity in Selangor
    Rampal, G.R. Lekhraj, Sanjay, R., Azhar, M.Z., Sherina, M.S., Ambigga, D., Rahimah, A.
    Malaysian Journal of Medicine and Health Sciences, 2006;2(2):89-97.
    MyJurnal
    Objective: This study was conducted to determine prevalence and factors associated with obesity in Selangor, Malaysia. Methods: A population-based cross-sectional study was conducted in all districts of Selangor State. All individuals, 15 years and above in the selected households, were included. A pre-tested structured questionnaire was used to collect the data. Weight was recorded using TANITA model HD-309 and height was measured using SECA Body meter Model 208. Statistical analysis was performed using Stata 8.2 taking into account the complex survey design. Results: The overall mean age of the 2219 respondents was 36.6(95% CI 35.7 – 37.6) years. There was no significant difference in the mean age of the males and females (p=0.697). The majority of the respondents were Malays (52.9%), followed by Chinese (30.9%), Indians (15.4%) and
    other races (0.9%). The overall mean BMI was 24.1 kg/m2 (95% CI=23.8- 24.4). The overall prevalence of obesity was 12.2% (95% CI 10.6%, 14.0%). There was no significant difference in the prevalence of obesity in the males compared to females (p>0.05). The prevalence of obesity increased with age up to the ages of 40-59 years and then decreased after 60 years. The highest prevalence of obesity was in the 40-59 years age groups in both sexes. The overall prevalence of obesity was significantly higher amongst the Malays (15.2%) compared to the Indians (11.6%) and Chinese (7.3%). Multivariate logistic regression analysis showed that only age and ethnicity were associated with obesity. Sex and educational level were not associated with obesity.
    Matched MeSH terms: Logistic Models
  7. Fulltext Students’ perceptions on tobacco free school: an analytic cross sectional study
    Rahman, M., Ahmad, S.A., Karim, J., Azhar, A., Rafidah, D.
    Malaysian Journal of Public Health Medicine, 2012;12(2):45-51.
    MyJurnal
    Participation and adherence to the law and cultivation of anti-tobacco culture became the important issues for reducing the tobacco use prevalence in the community. Measuring the perception of tobacco policy indirectly measures the acceptability of the law. This study aims to determine the perception of students on anti-tobacco policy in terms of tobacco free school environment and factors that support or deter them. A two-stage cluster samplingtechnique was used for selection of schools with probability proportional to enrolment size followed by stratified random sampling of government and private schools. Data were collected from 6563 secondary school students using
    structured questionnaire. Analysis showed that 66.2% of the female students and 33.8% of the male student have strong supportive attitude towards tobacco free school environment. Logistic regression analysis revealed that class grade IX and above, father’s occupation as service, family size less than 6, higher economic status, non smoker, non exposure to second hand smoking in the house and discussion of dangers of smoking appeared to have important influencing factors for tobacco free school environment (p
    Matched MeSH terms: Logistic Models
  8. Fulltext Prevalence of sleep disturbance among nurses in a Malaysian government hospital and its association with work characteristics
    Nazatul, S.M., Saimy, I., Moy, F.M., Nabila, A.S.
    JUMMEC, 2008;11(2):66-71.
    MyJurnal
    The objective of this study was to determine the prevalence of sleep disturbance with work characteristics among nurses in the Melaka Hospital, Malacca, Malaysia. This was a cross sectional study conducted in Melaka Hospital. Universal sampling was conducted and a Malay version of the Pittsburgh Sleep Quality Index (PSQI) questionnaire was used in data collection. Socio-demographic characteristics such as age, marital status, number of children and work characteristics such as type of work schedule and duration were also enquired. Factors associated with poor sleep quality were compared between those nurses with good sleep quality by using logistic regression. There were 607 nurses who completed the questionnaire with a response rate of 73.1%. There was a moderate prevalence (57.8%) of poor sleep quality (PSQI > 5) in all study subjects. The prevalence of sleep disturbance was more widespread among nurses who worked shifts (62.0%) compared to non-shift working nurses (41.5%) p
    Matched MeSH terms: Logistic Models
  9. Fulltext Home environment and fall at home among the elderly in Masjid Tanah province
    Rizawati, M., Mas Ayu, S.
    JUMMEC, 2008;11(2):72-82.
    MyJurnal
    The aim of this study was to determine whether the home environment was a risk factor for falls occurring at home among the elderly in the Masjid Tanah community, Malaysia. An analytical cross-sectional study conducted from early June 2006 until May 2007 in six randomly selected villages in Masjid Tanah Province. A total of 516 participants were included in this study. Overall prevalence of falls among the study participants was 27.3%. Home falls accounted for 66.7% of the total falls. In conclusion, there was no association between home environment and home fall in this study. Logistic regression analysis showed that having a depressive mood was the main determinant for home falls among the elderly in this study.
    Matched MeSH terms: Logistic Models
  10. Fulltext Association between awkward posture and musculoskeletal disorders (MSD) among assembly line workers in an automotive industry
    Anita, A.R., Yazdani, A., Hayati, K.S., Adon, M.Y.
    Malaysian Journal of Medicine and Health Sciences, 2014;10(1):23-28.
    MyJurnal
    Automotive industry in Malaysia is one of the booming industries which encompass the design, development and manufacturing of motor vehicles. However, it has its own setback as the interaction between complex tools, machines, and instruments, coupled with humans as workers pose several health hazards. A cross-sectional study was conducted to determine the prevalence of musculoskeletal disorders (MSD) and the association with awkward posture among automotive assembly line workers. A simple random sampling method was adopted and data were collected based on Standardized Nordic Questionnaire (SNQ) and Rapid Upper Limb Assessment (RULA) method for analysing awkward posture. With a response rate of 83%, a total of 232 assembly line workers with at least one year job tenure participated in this study. The findings revealed that 78.4% of workers reported MSD while the highest percentage of complaints concerned the lower back (50.9%). Three factors were found to be significantly associated with MSD: age (χ2=5.61, p=0.018), job tenure (χ2= 8.26, p=0.004) and awkward posture (χ2= 65.37, p < 0.001). Logistic regression analysis indicated that significant risk factors for MSD symptoms were workers aged ≥ 25 years old (OR= 2.25, 95%CI 1.14-4.46) and those workers with equal and more than three years job tenure (OR= 2.44, 95%CI 1.04-5.63). In addition, workers in the very high and high RULA action level who were 69 times (OR = 69.38, 95%CI 14.51- 331.73) and 12 times (OR = 12.42, 95%CI 5.21-29.58), respectively, also had higher odds of complaints of MSD. The high prevalence of MSD shows that MSD symptoms is a significant problem among automotive assembly line workers while age, job tenure and awkward posture based on RULA action level are the significant factors for MSD. In particular, this study proves that the prevalence of MSD increases as the RULA action level and job tenure increases. Thus, this problem could be reduced by decreasing RULA action level through appropriate ergonomic workstation design and ergonomic training for workers.
    Matched MeSH terms: Logistic Models
  11. Fulltext The socio-demographic determinants of smoking and alcohol consumption: a cross sectional study in Penang, Malaysia
    Cheah Y.K.
    Medicine & Health, 2014;9(1):62-73.
    MyJurnal
    The primary objective of the present study was to investigate the impact of sociodemographic factors on smoking and alcohol consumption among adults in Penang (Malaysia). A cross-sectional primary survey data with 398 respondents was used for analysis. The present study applied logistic regression models to examine the factors affecting the odds of smoking and alcohol consumption. The results showed that gender, ethnicity and education could significantly affect smoking. In particular, males (OR: 26.678) had a higher likelihood of smoking compared to the females, whereas Chinese (OR: 0.177), Indians/others (OR: 0.331) and individuals with tertiary education (OR: 0.258) had a lower likelihood of smoking than others. In terms of alcohol, gender, ethnicity and marital status were found to have a significant influence on the likelihood of alcohol consumption. Specifically, males (OR: 5.051), Chinese (OR: 37.796) and Indians/others (OR: 10.863) were more likely to consume alcohol than others, while married individuals (OR: 0.380) were less likely to consume alcohol than unmarried individuals. Based on the findings of the present study, numerous population-based intervention measures were suggested.
    Matched MeSH terms: Logistic Models
  12. Fulltext Factors affecting alcohol consumption: the case of Penang, Malaysia
    Yong, Kang Cheah
    Jurnal Sains Kesihatan Malaysia, 2014;12(2):45-51.
    MyJurnal
    In light of the increases in alcohol-induced diseases and social problems, the present study sets out to examine the factors affecting alcohol consumption among adults in Penang (Malaysia) using a cross-sectional survey sample consisting of 398 respondents. The results of the logistic regression analysis show that age, gender, ethnicity, marital status and smoking are significantly associated with alcohol consumption. In particular, males (OR: 3.720; 95% CI: 1.939, 7.136), Chinese (OR: 3.628; 95% CI: 1.808, 7.279) and smokers (OR: 5.083; 95% CI: 1.876, 13.774) are more likely to consume alcohol than others, whereas, old individuals (OR: 0.971; 95% CI: 0.941, 1.002), Malays (OR: 0.059; 95% CI: 0.021, 0.165) and married individuals (OR: 0.419; 95% CI: 0.211, 0.833) are less likely to consume alcohol than others. Based on the findings of the present study, several intervention strategies toward reducing alcohol consumption are proposed. Specifically, these strategies should be targeted at young individuals, males, Chinese, unmarried individuals and smokers.
    Matched MeSH terms: Logistic Models
  13. Fulltext Factors associated with severity of motorcyclist inqiuries seen in Hospital University Sains Malaysia (HUSM), Kelantan
    Nik Rosmawati, N.H., Manaf, A.H., Ahmad Zaki, I., Naing, L.
    Malaysian Journal of Public Health Medicine, 2004;4(2):45-53.
    MyJurnal
    All road users are at risk of being involved in motor vehicle crashes (MVCs). Approximately 52.2% of all fatalities and 70.9% of all casualties related to MVCs in Kelantan were motorcycle riders and pilliori riders. A number of risk factors have been established in the relationship between traffic accidents and road-user, the vehicle as well as road and traffic conditions. The study was a cross-sectional study to identify factors associated with the severity of injury sustained by motorcyclist accident patients admitted to the Emergency Department, Hospital Universiti Sains Malaysia (HUSM), assessed through face to face interview based questionnaire and, at the same time the severity of injury was determined through Revised Trauma Score. Data analysis was done using simple and multiple logistic regressions. The study revealed that age more than 5O years, no motorcycle license, no stressful condition and crashes on two·way road showed higher risk of sustaining a more severe injury. However, sleep time of six to less than nine hours per day, crash on a straight roadway and wet road surface were associated with less severe injury. We recommend that public education, licensing and enforcement on accident prevention and safety riding should be given a priority.
    Matched MeSH terms: Logistic Models
  14. Fulltext Non-leisure time physical activity for adult Malaysian and determinant factors
    Ahmad Taufik Jamil, Singh, Rakesh, Aniza Ismail, Azahadi Omar
    Malaysian Journal of Public Health Medicine, 2015;15(3):84-93.
    MyJurnal
    Non-Leisure Time Physical is the main component of physical activity in Malaysia. The aim of this study is to study the associated factors related to Non-Leisure Time Physical (occupational & travel) in Malaysia. This data is from the Third National Health and Morbidity Survey, consisting of 32,575 respondents. It was a cross-sectional study among Malaysian adult, aged 18 years and was conducted using proportional to the size stratified sampling method. Chi square test and logistic regression model were used to analyse the data. The result showed that non-leisure time physical activity (NLTPA) gives more contribution to total physical activity, as compared to leisure time physical activity with percentage of 64.3% and 35.7% respectively. There was a significant association between NLTPA with age (P < 0.001), gender (P < 0.001), ethnicity (P < 0.001), education (P < 0.001), occupation (P < 0.001), income (P < 0.001), marital status (P < 0.001), region (P < 0.001). The main component of physical activity in Malaysia is NLTPA. Promoting NLTPA may have potential to increase physical activity levels in Malaysia.
    Study name: National Health and Morbidity Survey (NHMS-2006)
    Matched MeSH terms: Logistic Models
  15. Fulltext Factors associated with the recurrence of complicated diverticular disease
    Azlanudin Azman, Ismail Sagap
    Journal of Surgical Academia, 2011;1(1):6-14.
    MyJurnal
    Colonic diverticula is observed in over 60% of the western population aged over 80 where up to 30% will eventually be symptomatic and may develop complications. The natural history and etiology of colonic diverticula have been well described. However, predictive indicators of complicated diverticular disease are not known thus preventing the prophylactic treatment of this subset of patients,. The aim of this study was to observe patients with complicated diverticular disease in order to identify common factors associated with recurrent complications. All hospital admissions from January 2005 to December 2008 for complications of diverticular disease were recruited. Using logistic regression, demographic data and factors such as clinical presentation, nature of complication, lifestyle, concomitant medical illness and medications that may be associated with recurrent episodes of complications were analyzed. A total of 121 patients were diagnosed with complicated diverticular disease during the study period with 24 patients having recurrent complications. Logistic regression analysis performed after controlling for confounders found active smoking (p=0.006) and alcohol consumption (p=0.036) along with underlying diabetes (p=0.031) and dyslipidemia (p=0.039) significantly associated with an increased risk of recurrent complications. We therefore concluded that smoking, alcohol consumption, diabetes mellitus and dyslipidemia are associated with recurrent complicated colonic diverticular disease. As these are modifiable risk factors, they should be sought for during the presentation of the first attack. Aggressive control of these factors will help in reducing the risk of recurrent complications.
    Matched MeSH terms: Logistic Models
  16. Fulltext Kinetic modeling of bacteriocin-like inhibitory substance secretion by Pediococcus acidilactici Kp10 and its stability in food manufacturing conditions
    Abbasiliasi S, Tan JS, Ibrahim TAT, Ramanan RN, Kadkhodaei S, Mustafa S, et al.
    J Food Sci Technol, 2018 Apr;55(4):1270-1284.
    PMID: 29606741 DOI: 10.1007/s13197-018-3037-x
    This paper deliberates the modelling and validation of bacteriocin-like inhibitory substance (BLIS) secretion by Pediococcus acidilactici Kp10 at different agitation speeds in a stirred tank bioreactor. A range of models namely the re-parameterised logistic, Luedeking-Piret and maintenance energy were assessed to predict the culture performance of the said bacterium. Growth of P. acidilactici Kp10 was enhanced with increased agitation speed up to 600 rpm while BLIS secretion was maximum at 400 rpm but decreased at higher agitation speed. Growth of P. acidilactici aptly subscribed to the re-parameterised logistic model while BLIS secretion and lactose consumption fitted well with the Luedeking-Piret model. The models revealed a relationship between growth of the bacterium and BLIS secretion. Bacterial growth and BLIS secretion were largely affected by the agitation speed of the stirred tank bioreactor which regulated the oxygen transfer to the culture. BLIS secretion by P. acidilactici Kp10 was however enhanced in oxygen-limited culture. The study also assessed BLIS from the perspective of its stability when subjected to factors such as temperature, pH and detergents. Results showed that BLIS produced by this strain was not affected by heat (at 25-100 °C for 20 min and at 121 °C for 15 min), surfactant (Tween 40, 60 and 80 and urea), detergents (up to 1% SDS), organic solvents (50% each of acetone, methanol and ethanol) and stable in a wide range of pH (2-10). The above information are pertinent with reference to commercial applications of this bacterial product in food manufacturing which invariably involve various sterilization processes and subjected to a wide pH range.
    Matched MeSH terms: Logistic Models
  17. Fulltext Non-adherence to recommended Pap smear screening guidelines and its associated factors among women attending health clinic in Malaysia
    Yunus NA, Mohamed Yusoff H, Draman N
    Malays Fam Physician, 2018;13(1):10-17.
    PMID: 29796205 MyJurnal
    Introduction: Cervical cancer ranks as the second most frequent cancer among women in Malaysia. Although a cervical screening program has been introduced since 1960s and is provided free of charge in all government health facilities, the coverage and adherence rate to recommendation among Malaysian women remains low.

    Objectives: To determine the proportion of non-adherence to Pap smear screening guidelines and its associated factors among women attending a health clinic in Malaysia.

    Method: A cross sectional study involving 316 women aged 20 to 65 years who had undergone a Pap smear. Universal sampling method was applied to select participants among women who attended the selected health clinic from January 2013 to May 2013. A self-administered questionnaire was used to obtain the socio-demographic characteristics, socio-health data and perceptions about cervical cancer and Pap smear screening. The data was analysed using descriptive statistics and multiple logistic regression.

    Result: The proportion of non-adherence to Pap smear screening was 90.5%. Age, marital status, duration of marriage, education level, employment, household income and number of children were not significantly associated with non-adherence. Perceived severity, perceived susceptibility, perceived benefit, perceived barrier and cues to action did not show significant association with non-adherence to Pap smear screening.

    Conclusion: Non-adherence to Pap smear screening was high among Malaysian women. Measures should be taken to increase Pap smear screening coverage in our country. Other factors beyond Health Belief Model that influence Pap smear screening practice among Malaysian women should be explored.
    Matched MeSH terms: Logistic Models
  18. GIS-based groundwater potential analysis using novel ensemble weights-of-evidence with logistic regression and functional tree models
    Chen W, Li H, Hou E, Wang S, Wang G, Panahi M, et al.
    Sci Total Environ, 2018 Sep 01;634:853-867.
    PMID: 29653429 DOI: 10.1016/j.scitotenv.2018.04.055
    The aim of the current study was to produce groundwater spring potential maps using novel ensemble weights-of-evidence (WoE) with logistic regression (LR) and functional tree (FT) models. First, a total of 66 springs were identified by field surveys, out of which 70% of the spring locations were used for training the models and 30% of the spring locations were employed for the validation process. Second, a total of 14 affecting factors including aspect, altitude, slope, plan curvature, profile curvature, stream power index (SPI), topographic wetness index (TWI), sediment transport index (STI), lithology, normalized difference vegetation index (NDVI), land use, soil, distance to roads, and distance to streams was used to analyze the spatial relationship between these affecting factors and spring occurrences. Multicollinearity analysis and feature selection of the correlation attribute evaluation (CAE) method were employed to optimize the affecting factors. Subsequently, the novel ensembles of the WoE, LR, and FT models were constructed using the training dataset. Finally, the receiver operating characteristic (ROC) curves, standard error, confidence interval (CI) at 95%, and significance level P were employed to validate and compare the performance of three models. Overall, all three models performed well for groundwater spring potential evaluation. The prediction capability of the FT model, with the highest AUC values, the smallest standard errors, the narrowest CIs, and the smallest P values for the training and validation datasets, is better compared to those of other models. The groundwater spring potential maps can be adopted for the management of water resources and land use by planners and engineers.
    Matched MeSH terms: Logistic Models
  19. Fulltext Psychosocial problem and its associated factors among adolescents in the secondary schools in Pasir Gudang, Johor
    Latiffah Abdul Latiff, Esra Tajik, Shirin Shameema Albar Ali Shirin, Normala Ibrahim, Azrin Shah Abu Bakar
    Malaysian Journal of Medicine and Health Sciences, 2017;13(1):35-44.
    MyJurnal
    Introduction: Adolescence is a crucial period with impressive emotional changes. Emotional disorders such as
    depression, anxiety and stress are high among adolescents worldwide; however the psychosocial changes are often
    neglected. The aim of the current study was to determine the depression, anxiety and stress symptoms and their
    associated factors among adolescents. Methods: A cross-sectional study using cluster sampling was carried out
    among school-going adolescents in 10 secondary schools in Pasir Gudang, Johor, Malaysia. Respondents answered
    a self-administered questionnaire including socio-demographic, Inventory of Parent and Peer Attachment (IPPA),
    Depression Anxiety Stress Scale-21 (DASS-21) and Strength and Difficulties Questionnaire (SDQ). Using SPSS-21,
    chi-square test and binomial logistic regression were conducted to examine the associations between dependent and
    independent variables. Results: Respondents (52.6% female and 53.9% Malay) had 46.0% prevalence of depression
    symptoms, 59.1% anxiety, 38.1% stress and 45.6% psychosocial status (internalizing and externalizing problems).
    Age, father occupation and parental bonding were significantly predicted having moderate to extremely severe
    depression symptom (p
    Matched MeSH terms: Logistic Models
  20. Fulltext Prevalence of frailty syndrome and its associated factors among community-dwelling elderly in East Coast of Peninsular Malaysia
    Mohd Hamidin FA, Adznam SN, Ibrahim Z, Chan YM, Abdul Aziz NH
    SAGE Open Med, 2018;6:2050312118775581.
    PMID: 29872529 DOI: 10.1177/2050312118775581
    Objective: Frailty is a clinical syndrome with increased risk of poor health outcomes and particularly prevalent in older adults and community population. The study's aim was therefore to determine the prevalence of frailty and its association with sociodemographic and socioeconomic characteristics, health-related status, and anthropometric measurements among community-dwelling older adults.

    Methods: A total of 279 older adults aged 60 years and above were randomly selected. Respondents were classified as non-frail (<2 criteria) or frail (≥3 criteria) based on the 'phenotype of frailty'. A binary logistic regression was used to determine predictors of frailty.

    Results: The prevalence of frailty was 18.3%. The frail older adults were positively associated with advanced age, being unmarried, hospitalisation in the previous year, poor self-rated health, and lower body mass index.

    Discussion: These results give an overview on underlying effects and guiding actions for prevention programmes functioning to reverse and minimise the adverse effects of frailty syndrome.

    Matched MeSH terms: Logistic Models
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