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  1. Fulltext EEG Mental Stress Assessment Using Hybrid Multi-Domain Feature Sets of Functional Connectivity Network and Time-Frequency Features
    Hag A, Handayani D, Pillai T, Mantoro T, Kit MH, Al-Shargie F
    Sensors (Basel), 2021 Sep 20;21(18).
    PMID: 34577505 DOI: 10.3390/s21186300
    Exposure to mental stress for long period leads to serious accidents and health problems. To avoid negative consequences on health and safety, it is very important to detect mental stress at its early stages, i.e., when it is still limited to acute or episodic stress. In this study, we developed an experimental protocol to induce two different levels of stress by utilizing a mental arithmetic task with time pressure and negative feedback as the stressors. We assessed the levels of stress on 22 healthy subjects using frontal electroencephalogram (EEG) signals, salivary alpha-amylase level (AAL), and multiple machine learning (ML) classifiers. The EEG signals were analyzed using a fusion of functional connectivity networks estimated by the Phase Locking Value (PLV) and temporal and spectral domain features. A total of 210 different features were extracted from all domains. Only the optimum multi-domain features were used for classification. We then quantified stress levels using statistical analysis and seven ML classifiers. Our result showed that the AAL level was significantly increased (p < 0.01) under stress condition in all subjects. Likewise, the functional connectivity network demonstrated a significant decrease under stress, p < 0.05. Moreover, we achieved the highest stress classification accuracy of 93.2% using the Support Vector Machine (SVM) classifier. Other classifiers produced relatively similar results.
    Matched MeSH terms: Stress, Psychological/diagnosis
  2. Fulltext Enhancing EEG-Based Mental Stress State Recognition Using an Improved Hybrid Feature Selection Algorithm
    Hag A, Handayani D, Altalhi M, Pillai T, Mantoro T, Kit MH, et al.
    Sensors (Basel), 2021 Dec 15;21(24).
    PMID: 34960469 DOI: 10.3390/s21248370
    In real-life applications, electroencephalogram (EEG) signals for mental stress recognition require a conventional wearable device. This, in turn, requires an efficient number of EEG channels and an optimal feature set. This study aims to identify an optimal feature subset that can discriminate mental stress states while enhancing the overall classification performance. We extracted multi-domain features within the time domain, frequency domain, time-frequency domain, and network connectivity features to form a prominent feature vector space for stress. We then proposed a hybrid feature selection (FS) method using minimum redundancy maximum relevance with particle swarm optimization and support vector machines (mRMR-PSO-SVM) to select the optimal feature subset. The performance of the proposed method is evaluated and verified using four datasets, namely EDMSS, DEAP, SEED, and EDPMSC. To further consolidate, the effectiveness of the proposed method is compared with that of the state-of-the-art metaheuristic methods. The proposed model significantly reduced the features vector space by an average of 70% compared with the state-of-the-art methods while significantly increasing overall detection performance.
    Matched MeSH terms: Stress, Psychological/diagnosis
  3. The Bahasa Melayu version of the Nursing Stress Scale among nurses: a reliability study in Malaysia
    Rosnawati MR, Moe H, Masilamani R, Darus A
    Asia Pac J Public Health, 2010 Oct;22(4):501-6.
    PMID: 20930177 DOI: 10.1177/1010539510380560
    The Nursing Stress Scale (NSS) has been shown to be a valid and reliable instrument to assess occupational stressors among nurses. The NSS, which was previously used in the English version, was translated and back-translated into Bahasa Melayu. This study was conducted to assess the reliability of the Bahasa Melayu version of the NSS among nurses for future studies in this country. The reliability of the NSS was assessed after its readministration to 30 nurses with a 2-week interval. The Spearman coefficient was calculated to assess its stability. The internal consistency was measured through 4 measures: Cronbach's α, Spearman-Brown, Guttman split-half, and standardized item α coefficients. The total response rate was 70%. Test-retest reliability showed remarkable stability (Spearman's ρ exceeded .70). All 4 measures of internal consistency among items indicated a satisfactory level (coefficients in the range of .68 to .87). In conclusion, the Bahasa Melayu version of the NSS is a reliable and useful instrument for measuring the possible stressors at the workplace among nurses.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  4. Fulltext The relationship between hair cortisol concentration and autism diagnosis
    Lin PI, John JR, Masi A, Ong LK, Mathew NE, Moni MA, et al.
    J Psychiatr Res, 2024 Aug;176:68-76.
    PMID: 38850580 DOI: 10.1016/j.jpsychires.2024.05.052
    BACKGROUND: Autistic children are prone to experience heightened levels of distress and physiological reactivity to a range of sensory, social, and emotional stimuli. In line with this, multiple studies have demonstrated that autistic children have higher acute cortisol stress responses to adverse or threatening stimuli and altered cortisol awakening responses. However, few studies have examined whether this sensitivity may relate to heightened levels of chronic stress and persistently elevated hypothalamic-pituitary-adrenal (HPA) axis activity. The measurement of cortisol accumulation in hair is considered a non-invasive biomarker of chronic stress and has been associated with several childhood diseases. Here, we investigated whether hair cortisol concentration in a large sample of autistic children differed from non-autistic children, and after accounting for a range of child, parental and family-level characteristics.

    METHODS: Hair cortisol concentration was measured in 307 autistic children and 282 non-autistic controls aged between 2 and 17 years recruited from four Australian states who participated in providing hair samples and demographic data to the Australian Autism Biobank. Independent samples t-test or one-way analysis of variance (ANOVA) were conducted to determine significant differences in the mean hair cortisol concentration (pg/mg) between potential covariates. Primary analysis included multivariable regression modelling of the collapsed sample to identify variables that were significantly associated with hair cortisol concentration after controlling for covariates. We also accounted for the potential interaction of multiple biological (e.g., age, sex, BMI) and psychosocial characteristics at the level of the child, the mother and the father, and the family unit.

    RESULTS: Our findings suggest that the diagnosis of autism was not a significant predictor of chronic stress, as measured by hair cortisol concentration. However, findings of the multivariable regression analysis showed that key factors such as area of residence (Queensland vs Victorian state of residence) and decrease in child's age were significantly associated with higher hair cortisol concentration whereas lower family income was significantly associated with higher hair cortisol concentration.

    CONCLUSION: To our knowledge, this is the first study to show that socioeconomic factors such as family annual income affect hair cortisol status in autistic children, indicating that the psychosocial environment may be a potential mediator for chronic stress in autistic children just as it has been demonstrated in non-autistic children.

    Matched MeSH terms: Stress, Psychological/diagnosis
  5. Testing comparison models of DASS-12 and its reliability among adolescents in Malaysia
    Osman ZJ, Mukhtar F, Hashim HA, Abdul Latiff L, Mohd Sidik S, Awang H, et al.
    Compr Psychiatry, 2014 Oct;55(7):1720-5.
    PMID: 24952938 DOI: 10.1016/j.comppsych.2014.04.011
    OBJECTIVE: The 21-item Depression, Anxiety and Stress Scale (DASS-21) is frequently used in non-clinical research to measure mental health factors among adults. However, previous studies have concluded that the 21 items are not stable for utilization among the adolescent population. Thus, the aims of this study are to examine the structure of the factors and to report on the reliability of the refined version of the DASS that consists of 12 items.
    METHOD: A total of 2850 students (aged 13 to 17 years old) from three major ethnic in Malaysia completed the DASS-21. The study was conducted at 10 randomly selected secondary schools in the northern state of Peninsular Malaysia. The study population comprised secondary school students (Forms 1, 2 and 4) from the selected schools.
    RESULTS: Based on the results of the EFA stage, 12 items were included in a final CFA to test the fit of the model. Using maximum likelihood procedures to estimate the model, the selected fit indices indicated a close model fit (χ(2)=132.94, df=57, p=.000; CFI=.96; RMR=.02; RMSEA=.04). Moreover, significant loadings of all the unstandardized regression weights implied an acceptable convergent validity. Besides the convergent validity of the item, a discriminant validity of the subscales was also evident from the moderate latent factor inter-correlations, which ranged from .62 to .75. The subscale reliability was further estimated using Cronbach's alpha and the adequate reliability of the subscales was obtained (Total=76; Depression=.68; Anxiety=.53; Stress=.52).
    CONCLUSION: The new version of the 12-item DASS for adolescents in Malaysia (DASS-12) is reliable and has a stable factor structure, and thus it is a useful instrument for distinguishing between depression, anxiety and stress.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  6. A study into salivary-based measurement of human stress subjected to Ellestad stress test protocol
    Lee YK, Za'aba A, Madzhi NK, Ahmad A
    Annu Int Conf IEEE Eng Med Biol Soc, 2009;2009:765-8.
    PMID: 19964239 DOI: 10.1109/IEMBS.2009.5333674
    Previous works on the effects of salivary alpha amylase in respond to various stressors report encouraging findings on it being a good indicator of stress. Ellestad protocol is a clinical procedure to screen for coronary artery disease by introducing exercise induced physical stress. If a salivary based biomarker profile in accordance to a stress test protocol could be established, the critical stress state which disable rational decision making could be ascertained in a standardized procedure. This technique would serve to aid human resource management in times of critical events such as rescue, firefighting or even military, that would potentially prevent unnecessary sacrifice of human lives. In this pilot study with five healthy volunteers performing the Ellestad protocol treadmill, a measurement profile with physiologic and salivary based biomarker is obtained. It is found that the alpha amylase levels or the changes in it as workload changes from resting-walking-running at ease-exhaustive running, is relatively more significant in reflecting the stress state than heart rate and blood pressure. Moreover, it is strongly associated with mood state with correlation coefficient of 0.8 and significance of 0.01.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  7. Reliability (internal consistency) of the job content questionnaire on job stress among office workers of a multinational company in Kuala Lumpur
    Maizura H, Masilamani R, Aris T
    Asia Pac J Public Health, 2009 Apr;21(2):216-22.
    PMID: 19189999 DOI: 10.1177/1010539509331981
    This small, cross-sectional study assessed the reliability of 3 scales from the Job Content Questionnaire (JCQ)-decision latitude, psychological job demand, and social support-in a group of office workers in a multinational company in Kuala Lumpur. A universal sample of 30 white-collar workers from a department of the company self-administered the English version of the JCQ comprising 21 core items selected from the full recommended version of 49 items on-site. Reliability (internal consistency) was evaluated using Cronbach's alpha coefficients for each scale. Corrected item-total correlation was presented for each and every item. Cronbach's alpha coefficients were acceptable for decision latitude (.76) and social support (.79) but slightly lower for psychological job demand (.64). Values for all item-total correlations for all 3 scales were greater than .3. In conclusion, this study suggests that the JCQ is a reliable scale for assessing job stress in this group of workers.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  8. Fulltext Reliability and validity of the Pressure Management Inventory in a Malaysian population
    Loh SY
    Med J Malaysia, 2004 Jun;59(2):199-206.
    PMID: 15559170 MyJurnal
    There is a general lack of valid tools to measure work stress of Malaysian. This study examines the validity and reliability of the Pressure Management Inventory (PMI). Reliability was evaluated using test retest method, and its correlation coefficient was calculated using Pearson's r. Internal consistencies were examined using Cronbach's Alpha. For precision, the Intraclass coefficients (ICC) were calculated for all the scales. Face Validity and Content Validity were assessed using an open-ended questionnaire on 6 content experts (psychiatrists in HKL). The results show good internal consistencies (alpha < or = 0.7) for most subscales, with the best results in the 'Pressure Scale'. The weak scales are 'Individual-Differences' scale and 'Social Support' scale. The test-retest correlation coefficients were significant at the level of p<0.001 for all, except one scale. The ICC coefficients were high (>0.7) for most scales, particularly for Pressure, Health and Coping Scales. The PMI is a suitable, reliable and valid tool to measure stress of Malaysians. More in-depth study with a wider sampling needs to be carried out to add confidence of its usage on Malaysians.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  9. Fulltext Prevalence and associated factors of job-related depression in laboratory technicians in Hospital Universiti Sains Malaysia (HUSM) and Ministry of Health Malaysia (MOH) Hospitals in Kelantan
    Aziah BD, Rusli BN, Winn T, Naing L, Tengku MA
    Med J Malaysia, 2004 Jun;59(2):268-78.
    PMID: 15559179
    Karasek's job strain model postulates that workers chronically exposed to adverse psychosocial work environment (high strain job)--high psychological job demands and low job control, including poor social support, increased physical demand and hazardous work condition--will eventually develop both physical illnesses such as cardiovascular diseases and psychological disorders such as depression. In order to determine the prevalence and associated factors of job-related depression, a cross-sectional study was conducted among laboratory technicians in Hospital Universiti Sains Malaysia (HUSM) and Kementerian Kesihatan Malaysia (KKM) Hospitals in Kelantan between September 2001 and February 2002. One hundred and two laboratory technicians in HUSM and 79 laboratory technicians in 7 KKM Hospitals were selected; 84/102 (82.4%) in HUSM and 71/79 (89.9%) in KKM Hospitals responded. Data was collected using self-administered questionnaires of the validated Malay version of the Job Content Questionnaire (JCQ) originally developed by Robert Karasek. Results indicated that the prevalence of high job strain in laboratory technicians in HUSM and KKM hospitals was 33.3% (28/84) and 26.8% (19/71), respectively (p>0.05). Significantly higher proportion (59.5%) (50/84) of laboratory technicians in HUSM compared to those in KKM Hospitals (39.4%) (28/71) (p = 0.016) experienced job-related depression. Significant associated factors of job-related depression were low social support (HUSM: adjusted OR 4.7, 95% CI 1.2-18.8; KKM: adjusted OR 14.8, 95%CI 2.4-89.3), high psychological demand (HUSM: adjusted OR 3.0, 95%CI 1.0-8.8), and low decision authority (KKM: adjusted OR 9.7, 95%CI 1.0-91.1). We conclude that strengthening the social support network (supervisors' and coworkers' support), reducing psychological job demand, and increasing decision-making authority of laboratory technicians may go a long way towards reducing job-related depression.
    Matched MeSH terms: Stress, Psychological/diagnosis
  10. Depression in the young, parental depression and parenting stress
    Tan S, Rey J
    Australas Psychiatry, 2005 Mar;13(1):76-9.
    PMID: 15777418
    To examine the relationship between depression in children and adolescents, parental depression and parenting stress.
    Matched MeSH terms: Stress, Psychological/diagnosis
  11. Fulltext Stress among parents with acutely ill children
    Nizam M, Norzila MZ
    Med J Malaysia, 2001 Dec;56(4):428-34.
    PMID: 12014761
    Objectives: A child's admission into intensive care is a major cause of stress for parents. However among Malaysian parents, data concerning the perception of stress are virtually absent. Therefore we conducted a study to measure the reliability of the Malay version of Parental Stressor Scale: Pediatric Intensive Care Unit (PSS: PICU) in identifying sources of stress and to study factors that might influence their stress response.
    Methods: Over a six-month period, one hundred and twelve parents were requested to answer the questionnaires twice either in Malay or English, a week apart. Spearman's correlation and Cronbach's alpha coefficient was used to assess the repeatability and internal consistency of the questionnaires.
    Results: Ninety-four (83.9%) and seventy-one (75.3%) parents responded to the first and second administration of questionnaire respectively. All answered in the Malay language except for three. The correlation ranged from 0.50 to 0.71 with a total score of 0.76. The Cronbach's alpha coefficient ranged from 0.75 to 0.93, with total a score of 0.95.
    Alteration in parental roles was the most stressful source of stress. Fathers, parents of children with higher PRISM score and parents with no previous admission into intensive care unit scored significantly higher in staff’s communication.
    Conclusion: The Malay version of PSS: PICU is reliable in identifying sources of stress. Alteration in parental roles was the most stressful source of stress. Parents' gender, previous experience and severity of the child illness may influence their stress responses.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  12. Fulltext The validity and reliability of the English version of the diabetes distress scale for type 2 diabetes patients in Malaysia
    Chin YW, Lai PS, Chia YC
    BMC Fam Pract, 2017 02 20;18(1):25.
    PMID: 28219325 DOI: 10.1186/s12875-017-0601-9
    BACKGROUND: Several disease specific instruments have been developed to identify and assess diabetes distress. In Malaysia, the Problem Areas in Diabetes Scale has been validated in Malay, but it does not have specific domains to assess the different areas of diabetes-related distress. Hence, we decided to use the Diabetes Distress Scale instead. To date, only the Malay version of the Diabetes Distress Scale has been validated in Malaysia. However, English is widely spoken by Malaysians, and is an important second language in Malaysia. Therefore, our aim was to determine the validity and reliability of the English version of the Diabetes Distress Scale among patients with type 2 diabetes in Malaysia.
    METHODS: The Diabetes Distress Scale was administered to 114 patients with type 2 diabetes, who could understand English, at baseline and 4 weeks later, at a primary care clinic in Malaysia. To assess for convergent validity, the Depression Anxiety Stress Scale was administered at baseline. Discriminative validity was assessed by analysing the total diabetes distress scores of participants with poor (HbA1c > 7.0%) and good glycaemic control (HbA1c ≤ 7.0%).
    RESULTS: The majority of our participants were male 65(57.0%), with a median duration of diabetes of 9.5 years. Exploratory factor analysis showed that the Diabetes Distress Scale had 4 subscales, as per the original Diabetes Distress Scale. The overall Cronbach's α was 0.920 (range = 0.784-0.859 for each subscale). The intraclass correlation ranged from 0.436 to 0.643 for test-retest. The Diabetes Distress Scale subscales were significantly correlated with the different subscales of the Depression Anxiety Stress Scale (spearman's rho range = 0.427-0.509, p 
    Matched MeSH terms: Stress, Psychological/diagnosis*
  13. The Suffering Pictogram: Measuring Suffering in Palliative Care
    Beng TS, Ann YH, Guan NC, Chin LE, Loong LC, Ying NT, et al.
    J Palliat Med, 2017 08;20(8):869-874.
    PMID: 28410449 DOI: 10.1089/jpm.2016.0448
    BACKGROUND: Measuring suffering objectively presents a challenge because suffering is a unique and subjective experience. However, objective tools are of profound importance in the detection and management of suffering in clinical practice for optimal patient care.

    OBJECTIVE: The objective of the study is to assess the psychometric properties of the Suffering Pictogram, a new suffering assessment instrument on a population of palliative care patients.

    DESIGN AND SETTING: This is a validation study conducted at University of Malaya Medical Centre, Kuala Lumpur, Malaysia. Ninety one palliative care patients were recruited. Patients were interviewed with the Suffering Pictogram and FACIT-Sp.

    RESULTS: The median completion time for the Suffering Pictogram was five minutes. The Suffering Pictogram showed good internal consistency, with a Cronbach's alpha of 0.836. The total scores of the Suffering Pictogram correlated strongly and negatively with FACIT-Sp total score (Spearman's Rho = -0.625, p 

    Matched MeSH terms: Stress, Psychological/diagnosis*
  14. Towards multilevel mental stress assessment using SVM with ECOC: an EEG approach
    Al-Shargie F, Tang TB, Badruddin N, Kiguchi M
    Med Biol Eng Comput, 2018 Jan;56(1):125-136.
    PMID: 29043535 DOI: 10.1007/s11517-017-1733-8
    Mental stress has been identified as one of the major contributing factors that leads to various diseases such as heart attack, depression, and stroke. To avoid this, stress quantification is important for clinical intervention and disease prevention. This study aims to investigate the feasibility of exploiting electroencephalography (EEG) signals to discriminate between different stress levels. We propose a new assessment protocol whereby the stress level is represented by the complexity of mental arithmetic (MA) task for example, at three levels of difficulty, and the stressors are time pressure and negative feedback. Using 18-male subjects, the experimental results showed that there were significant differences in EEG response between the control and stress conditions at different levels of MA task with p values stress level to another level, p values stress levels. In addition, we developed a discriminant analysis method based on multiclass support vector machine (SVM) with error-correcting output code (ECOC). Different stress levels were detected with an average classification accuracy of 94.79%. The lateral index (LI) results further showed dominant right prefrontal cortex (PFC) to mental stress (reduced alpha rhythm). The study demonstrated the feasibility of using EEG in classifying multilevel mental stress and reported alpha rhythm power at right prefrontal cortex as a suitable index.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  15. Association of psychological distress with arm morbidity symptoms in breast cancer survivors: outcomes from the use of PHQ-9 and GAD-7 questionnaires
    Yusof KM, Mohd Sidik S, Mahmud R, Abdullah M, Avery-Kiejda KA, Rosli R
    Breast Cancer, 2023 Sep;30(5):810-819.
    PMID: 37306933 DOI: 10.1007/s12282-023-01475-0
    BACKGROUND: Although higher survival rates of breast cancer are achieved these days, breast cancer survivors are challenged with unwanted side effects from treatment or management that affect physical, functional, and psychological well-being of an individual. This study aimed to assess psychological distress status in Malaysian breast cancer survivors and factors that affected the condition.

    METHODS: A cross-sectional study design was conducted on 162 breast cancer survivors from various breast cancer support groups in Malaysia. Psychological distress status was assessed based on depression and anxiety scores by applying the Malay version of Patient Health Questionnaire (PHQ-9) and General Anxiety Disorder (GAD-7). Both instruments were self-administered along with a set of questionnaires comprising demographic, medical history, quality of life, and upper extremity function assessment. Outcomes from the PHQ-9 and GAD-7 were analyzed for severity level of psychological distress, and its association with relevant variables, arm morbidity symptoms, as well as the duration of cancer survivorship.

    RESULTS: The univariate analysis showed that breast cancer survivors with arm morbidities after breast surgery had a higher score of depression (5.0 vs 4.0, p = 0.011) and anxiety (3.0 vs 1.0, p = 0.026) than those who did not. Besides that, receiving fewer post-rehabilitation treatments (p = 0.049) and having a family history of cancer (p = 0.022) were correlated with higher anxiety level. The level of depression and anxiety was inversely proportionate with quality of life and positively correlated with greater disability of the arm function (p 

    Matched MeSH terms: Stress, Psychological/diagnosis
  16. Fulltext Prevalence and risk factors of postpartum depression, general depressive symptoms, anxiety and stress (PODSAS) among mothers during their 4-week postnatal follow-up in five public health clinics in Perak: A study protocol for a cross-sectional study
    Mohammad Redzuan SA, Suntharalingam P, Palaniyappan T, Ganasan V, Megat Abu Bakar PN, Kaur P, et al.
    BMJ Open, 2020 Jun 21;10(6):e034458.
    PMID: 32565453 DOI: 10.1136/bmjopen-2019-034458
    INTRODUCTION: Postpartum depression, general depressive symptoms, anxiety and stress (PODSAS) are often overlooked, and may cause morbidity to new mothers, their babies and families. This study aims to determine the point prevalence of depression (post partum and general), anxiety and stress among mothers in five public health clinics in Perak at 4 weeks postdelivery and identify their associated risk factors. Findings from this study will be used to identify the needs for early screening and detection, encourage development of interventions to reduce its occurrence and support mothers with PODSAS.

    METHODS AND ANALYSIS: This cross-sectional study will recruit 459 postpartum mothers during their 4-week postnatal follow-up in five selected public health clinics in Perak from September 2019 to May 2020. Participants will be mothers aged 18 years and above at 4 weeks postdelivery who are able to understand the English and Malay languages. Non-Malaysians and mothers with known diagnosis of psychotic disorders will be excluded from the study. Sociodemographic information and possible risk factors of the participants will be captured via a set of validated questionnaires, postpartum depression (PPD) will be measured using the Edinburgh Postpartum Depression Scale questionnaire and general depressive symptoms, anxiety and stress will be measured using the 21-item Depression, Anxiety and Stress Scale. Data analysis will be conducted using SPSS V.25.0 (IBM). Besides descriptive statistics, multivariable regression analyses will be done to identify possible risk factors and their independent associations with depression (PPD and general depressive symptoms, combined and separately), anxiety and stress.

    ETHICS AND DISSEMINATION: The study protocol was reviewed and approved by the Medical Research Ethics Committee, Ministry of Health Malaysia on 7 August 2019. Results of this study will be reported and shared with the local health stakeholders and disseminated through conference proceedings and journal publications.

    REGISTRATION NUMBER: This study is registered in the Malaysian National Medical Research Register with the ID: NMRR-19-868-47647.

    Matched MeSH terms: Stress, Psychological/diagnosis
  17. Fulltext Reliability and validity of job content questionnaire for university research laboratory staff in Malaysia
    Nehzat F, Huda BZ, Tajuddin SH
    Southeast Asian J Trop Med Public Health, 2014 Mar;45(2):481-9.
    PMID: 24968690
    Job Content Questionnaire (JCQ) has been proven a reliable and valid instrument to assess job stress in many countries and among various occupations. In Malaysia, both English and Malay versions of the JCQ have been administered to automotive workers, schoolteachers, and office workers. This study assessed the reliability and validity of the instrument with research laboratory staff in a university. A cross sectional study was conducted among 258 research laboratory staff in Universiti Putra Malaysia (UPM). Malaysian laboratory staff who have worked for at least one year were randomly selected from nine faculties and institutes in the university that have research laboratory. A self-administered English and Malay version of Job Content Questionnaire (JCQ) was used. Three major scales of JCQ: decision latitude, psychological job demands, and social support were assessed. Cronbach's alpha coefficients of two scales were acceptable, decision latitude and psychological job demands (0.70 and 0.72, respectively), while Cronbach's alpha coefficient for social support (0.86) was good. Exploratory factor analysis showed five factors that correspond closely to the theoretical construct of the questionnaire. The results of this research suggest that the JCQ is reliable and valid for examining psychosocial work situations and job strain among research laboratory staff. Further studies should be done for confirmative results, and further evaluation is needed on the decision authority subscale for this occupation.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  18. Correlates of depression, anxiety and stress among Malaysian university students
    Shamsuddin K, Fadzil F, Ismail WS, Shah SA, Omar K, Muhammad NA, et al.
    Asian J Psychiatr, 2013 Aug;6(4):318-23.
    PMID: 23810140 DOI: 10.1016/j.ajp.2013.01.014
    University students face not only challenges related with independent living, but also academic challenges. This predisposes them to depression, anxiety and stress, which are fairly common.
    Matched MeSH terms: Stress, Psychological/diagnosis*
  19. Salivary biomarkers of stress among teachers in an urban setting
    Masilamani R, Darus A, Ting AS, Ali R, Awang Mahmud AB, Koh D
    Asia Pac J Public Health, 2012 Mar;24(2):278-87.
    PMID: 21385771 DOI: 10.1177/1010539510393725
    The aim of this study was to determine the prevalence of job stress among secondary school teachers using Karasek Job Content Questionnaire (JCQ), the association between salivary cortisol, salivary IgA, and sociodemographic characteristics, and the association between log cortisol, IgA levels, and job strain categories. A cross-sectional study was undertaken using JCQ and salivary cortisol and IgA samples. Cluster sampling was done yielding 302 respondents. The prevalence of stress among all teachers was 20.2%. Being a Malay, teaching experience of 5 to 10 years, and those without a supervisor's support had higher prevalence of high job strain. Teachers in the 31 to 40 years age bracket, educating handicapped children with the absence of supervisor support exhibited higher stress levels with lower log salivary IgA levels. Further studies must be conducted using salivary biomarkers to study the in-depth relationship of stress, extending into other occupational groups.
    Matched MeSH terms: Stress, Psychological/diagnosis
  20. Psychometric properties of the Medical Student Well-Being Index among medical students in a Malaysian medical school
    Yusoff MS, Yaacob MJ, Naing NN, Esa AR
    Asian J Psychiatr, 2013 Feb;6(1):60-5.
    PMID: 23380320 DOI: 10.1016/j.ajp.2012.09.001
    This study evaluated the convergent, discriminant, construct, concurrent and discriminative validity of the Medical Student Wellbeing Index (MSWBI) as well as to evaluate its internal consistency and optimal cut-off total scores to detect at least moderate levels of general psychological distress, stress, anxiety and depression symptoms. A cross sectional study was done on 171 medical students. The MSWBI and DASS-21 were administered and returned immediately upon completion. Confirmatory factor analysis, reliability analysis, ROC analysis and Pearson correlation test were applied to assess psychometric properties of the MSWBI. A total of 168 (98.2%) medical students responded. The goodness of fit indices showed the MSWBI had a good construct (χ(2)=6.14, p=0.803, RMSEA<0.001, RMR=0.004, GFI=0.99, AGFI=0.97, CFI=1.00, IFI=1.02, TLI=1.04). The Cronbach's alpha value was 0.69 indicating an acceptable level of internal consistency. Pearson correlation coefficients and ROC analysis suggested each MSWBI's item showed adequate convergent and discriminant validity. Its optimal cut-off scores to detect at least moderate levels of general psychological distress, stress, anxiety, and depression were 1.5, 2.5, 1.5 and 2.5 respectively with sensitivity and specificity ranged from 62 to 80% and the areas under ROC curve ranged from 0.71 to 0.83. This study showed that the MSWBI had good level of psychometric properties. The MSWBI score more than 2 can be considered as having significant psychological distress. The MSWBI is a valid and reliable screening instrument to assess psychological distress of medical students.
    Matched MeSH terms: Stress, Psychological/diagnosis*
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