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Professional Profile

About Me

Associate Professor, Department of Biostatistics and Research Methodology, School of Medical Sciences, Universiti Sains Malaysia

MD, MPH, DrPH | Public Health Medicine Specialist (Epidemiology)

I am a Public Health Medicine Specialist (Epidemiology) and medical lecturer with interests in public health, epidemiology, biostatistics, and research methodology. Through NajibMY, I share my academic profile, selected resources, and transparent tools to support health and medical research.

Portrait of Najib Majdi Yaacob

Career Summary

Before joining Universiti Sains Malaysia in 2014, I served with the Ministry of Health Malaysia from 2004 to 2014. My academic work at Universiti Sains Malaysia has focused on public health, epidemiology, biostatistics, research methodology, teaching, and methodological capacity-building.

Methodological Expertise

Methodological support on NajibMY is framed around helping researchers clarify assumptions, match methods to research questions, and interpret results carefully. This does not imply guaranteed service delivery, availability, or a predetermined research outcome.

  • Study design and protocol development.
  • Sample-size planning and assumptions.
  • Biostatistical analysis and interpretation.
  • Systematic review and meta-analysis methods.
  • Measurement, validation, diagnostic, and prognostic methods.
  • Transparent research-planning tools and documentation.

Teaching And Capacity-Building

Teaching and capacity-building are an important part of my academic work, with emphasis on helping health and medical researchers understand research design, biostatistics, evidence synthesis, and scientific reporting in practical terms.

  • Biostatistics and epidemiology for health research.
  • Research methodology, protocol development, and study planning.
  • Evidence synthesis, scientific reporting, and publication support.

Research and publications

My research interests span public health, epidemiology, biostatistics, clinical research, and evidence synthesis.

Publications are grouped by research theme. Open a theme to view the publication list and follow the linked title to the source page.

Systematic Reviews, Meta-analyses & Evidence Synthesis 10 publications

2026

  1. Features of mobile apps for diabetic kidney disease self-management: a scoping review

2025

  1. Efficacy and safety of dupilumab in chronic rhinosinusitis with nasal polyps: a systematic review and meta-analysis
  2. Redefining chronic rhinosinusitis burden: a systematic review of global olfactory dysfunction prevalence
  3. Current tools for investigating breast cancer screening hesitancy: a systematic scoping review

2024

  1. Correlation of serum prolactin and thyroid stimulating hormone concentration in infertile women: a systematic review and meta-analysis
  2. Correlation between anti-Mullerian hormone with insulin resistance in polycystic ovarian syndrome: a systematic review and meta-analysis
  3. Prognostic factors for cervical cancer in Asian populations: a scoping review of research from 2013 to 2023
  4. Global research trends in cervical cancer survival in the last two decades: a bibliometric analysis

2023

  1. Radiological anatomical variations of the lateral nasal wall and anterior skull base amongst different populations: a systematic review and meta-analysis

2020

  1. Global prevalence of macroprolactinemia among patients with hyperprolactinemia: a systematic review and meta-analysis
Public Health, Health Services, Patient Safety & Digital Health 19 publications

2026

  1. Patient engagement and safety mediated by self-efficacy: a cross-sectional study from Malaysian hospitals
  2. The relationship between perceived food environment and glycemic control among Malaysian diabetic patients
  3. Modeling breast cancer screening hesitancy among Chinese women: integrating the knowledge-attitude-practice, health belief, and 5C frameworks
  4. Modeling social and behavioral factors associated with community participation in community-based surveillance of communicable diseases: a cross-sectional study in Kelantan, Malaysia

2025

  1. Alpha-1 antitrypsin in COVID-19 patients: a dual-center screening study in Malaysia
  2. Modeling the determinants of community engagement in community-based surveillance of infectious diseases: applying the Health Belief Model
  3. Prevalence and predictors of mortality in patients with severe community-acquired pneumonia in the intensive care unit

2024

  1. A comprehensive model for understanding breast cancer screening hesitancy: integrating the Health Belief Model and the confidence, convenience, complacency, constraints, and risk and responsibility calculations (5C) model

2023

  1. A 10-year review of obstetrics anal sphincter injury at a tertiary teaching hospital in the east coast of peninsular Malaysia
  2. Impact of the accreditation program of the Saudi central board for accreditation of healthcare institutions on the safety dimension of the institute of medicine quality
  3. Enabling factors for the successful implementation of the CBAHI accreditation program

2022

  1. Experiences and expectations of the characteristics of friendly primary health services from the perspective of men: a phenomenological qualitative study
  2. The frequency and cost of redundant biochemistry test in tertiary teaching hospital
  3. The effect of second-victim-related distress and support on work-related outcomes in tertiary care hospitals in Kelantan, Malaysia

2021

  1. Perceived quality of care among people with type 2 diabetes mellitus in the north east region of peninsular Malaysia
  2. Assessing patient-perceived hospital service quality and sentiment in Malaysian public hospitals using machine learning and Facebook reviews
  3. Patient satisfaction and hospital quality of care evaluation in Malaysia using SERVQUAL and Facebook

2020

  1. Effectiveness of the ColorApp mobile app for health education and promotion for colorectal cancer: quasi-experimental study
  2. Ambulance response time does not influence outcome of major adverse cardiac events
Clinical Medicine, Disease Outcomes & Therapeutics 72 publications

2026

  1. Depression among school-age children performing clean intermittent catheterization (CIC) in neurogenic bladder
  2. Negative automatic thoughts as predictor of psychological well-being among university students in Malaysia

2025

  1. Clinical predictors of acute kidney injury in children with acute post-streptococcal glomerulonephritis: a tertiary centre experience
  2. Short-term outcome of Hodgkin lymphoma patients and its prognostic factors in northeast peninsular Malaysia: a single centre experience
  3. Kelulut honey as an alternate source of carbo-loading in abdominal surgery involving the digestive system: a randomised blinded comparative study
  4. Necessity of performing routine free thyroxine level in every thyroid function test with normal thyroid-stimulating hormone: a cross-sectional study
  5. Consensus development of resilience components in Malaysian breast cancer survivors: findings from a Delphi study
  6. Incidence of newborns with Down syndrome and factors associated with their length of hospital stay in Hospital Pakar Universiti Sains Malaysia
  7. Neurodevelopment and gross motor function outcomes in children at risk or diagnosed with cerebral palsy using Snoezelen multisensory room

2024

  1. The effect of USM-iam-based counselling vs standard counselling on insulin adherence, FBS and HbA1c among patients with uncontrolled type 2 diabetes mellitus (T2DM): a randomised controlled trial
  2. Predictors of treatment failure and mortality among patients with septic shock treated with meropenem in the intensive care unit
  3. Analytical evaluation of point-of-care Finecare procalcitonin rapid quantitative test in sepsis population as compared with Elecsys BRAHMS procalcitonin immunoassay
  4. Prevalence and risk factors for dyslipidaemia and hypertension in diabetes mellitus among paediatric population in Hospital Universiti Sains Malaysia (USM), Kelantan, Malaysia
  5. Diagnostic accuracy of arm span-to-height ratio in differentiating physiological and pathological short stature
  6. Association between serum uric acid levels with essential hypertension and its metabolic variables in Hospital Universiti Sains Malaysia
  7. Predictors affecting the attitude towards homosexuality among health sciences university students in east coast Malaysia
  8. Survival of ischaemic and haemorrhagic stroke: analysis of the Malaysian national stroke registry data from 2009 to 2013
  9. Prevalence and risk factors for dyslipidaemia and hypertension in diabetes mellitus among paediatric population in Hospital Universiti Sains Malaysia (USM)

2023

  1. Diagnostic value of serum and tissue eosinophil in diagnosis of asthma among patients with chronic rhinosinusitis
  2. Factors affecting central macular thickness of diabetic macular oedema patients after an induction treatment of intravitreal ranibizumab
  3. A comparison between the online prognostic tool PREDICT and myBeST for women with breast cancer in Malaysia
  4. Agreement of parathyroid hormone status measured by intact and biointact parathyroid hormone assays among chronic kidney disease patients and its correlation with bone turnover parameters
  5. Emotional and behavioural problems among preschool children in northeast peninsular Malaysia: parent report version
  6. Structural relationship between family functioning and parental health-related quality of life among parents with Down syndrome children in Kelantan, Malaysia
  7. The level of n-carboxymethyllysine and c-reactive protein in type 2 diabetes mellitus and its association with HbA1c in diabetic nephropathy
  8. Evaluation of agreement between point-of-care and laboratory automated immunoassay in procalcitonin measurement among critically ill patients
  9. Serum procalcitonin (PCT)-is there a role as an early biomarker in infected diabetic foot ulcer (IDFU) patients?
  10. Postnatal depression: associated factors and its relationship with maternal bonding among Malay women in Malaysia
  11. Endocrine disorders in childhood brain tumour survivors: a single-centre study
  12. Evaluation of HbA1c using high performance liquid chromatography and capillary electrophoresis in type 2 diabetes mellitus patients suspected to have haemoglobin variant
  13. C-reactive protein, albumin, urea, CRP/albumin ratio, and urea/albumin ratio: a retrospective evaluation in COVID-19 patients
  14. Renal outcomes and predictors in spina bifida children: a 10-year review in two tertiary hospitals
  15. Prevalence and outcome of sepsis: mortality and prolonged intensive care unit stay among sepsis patients admitted to a tertiary centre in Malaysia
  16. Prevalence and risk factors of endocrine disorder in childhood brain tumor survivors: a single-centre study
  17. MyBeST A web-based survival prognostic tool for women with breast cancer in Malaysia: development process and preliminary validation study

2022

  1. Development of predictive models for survival among women with breast cancer in Malaysia
  2. The prevalence of complementary and alternative medicines (CAM) usage among allergic rhinitis patients in Malaysia
  3. Visual field progression in Malay patients with primary glaucoma: survival analysis and prognostic factors
  4. Angiopoietin-like protein 4 and insulin-like growth factor-1 expression in invasive breast carcinoma in young women
  5. Evaluation of a program to control catheter-related bloodstream infections at a tertiary institution in Malaysia
  6. Prevalence of metabolic syndrome and its associated risk factors in pediatric obesity
  7. Clinical predictors for systemic reaction in children with hymenoptera sting: a southeast asian experience
  8. Comparison between the transcutaneous and total serum bilirubin measurement in Malay neonates with neonatal jaundice
  9. Neonatal outcomes of pregnancies complicated by maternal hyperthyroidism
  10. Factors influencing visual improvement after phacoemulsification surgery among Malaysian cataract patients
  11. A 10-year review of methotrexate treatment for ectopic pregnancy in a Malaysian tertiary referral hospital
  12. Medication adherence to intranasal corticosteroids in allergic rhinitis patients with comorbid medical conditions
  13. Prognostic factors for bladder cancer patients in Malaysia: a population-based study
  14. Outcomes and determinant factors of percutaneous transcatheter occlusion among children with patent ductus arteriosus in the east coast Malaysia: a 10 year experience
  15. Disruption of thalamocortical connectivity in spastic cerebral palsy: a probabilistic tractography study
  16. Prevalence of abnormal cranial CT scan in nontraumatic headache patients with red flag symptoms at the emergency department in Hospital Universiti Sains Malaysia

2021

  1. A randomized controlled trial comparing two doses of caffeine for apnoea in prematurity
  2. Association between vitamin d receptor polymorphisms (bsmi and foki) and glycemic control among patients with type 2 diabetes
  3. Survival and characteristics of bladder cancer: analysis of the Malaysian national cancer registry
  4. Alteration of plasma alanine, glutamate, and glycine level: a potentiate manic episode of bipolar disorder
  5. Randomized clinical trial between fluoxetine and dapoxetine for premature ejaculation and its effect on marital relationship
  6. Net survival differences of breast cancer between stages at diagnosis and age groups in the east coast region of west Malaysia: a retrospective cohort study
  7. Rate of weight gain and its association with homeostatic model assessment-insulin resistance (HOMA-IR) among obese children attending paediatric endocrine clinic, Hospital Universiti Sains Malaysia
  8. Comparison of esmolol and dexmedetomidine infusion in attenuating haemodynamic and blood glucose response to laryngoscopy and intubation: a single blinded study
  9. Effect of dialysis modality on the survival of end-stage renal disease patients starting dialysis in Sabah from 2007 to 2017: a retrospective cohort study
  10. Non-compliance to iron chelation therapy in patients with transfusion-dependent thalassaemia
  11. Elevation of highly sensitive cardiac troponin t among end-stage renal disease patients without acute coronary syndrome
  12. Interferences of HbA1c analysis in Hospital Universiti Sains Malaysia-3 years study

2020

  1. Effects of FamilyDoctor concept and doctor-patient interaction satisfaction on glycaemic control among type 2 diabetes mellitus patients in the northeast region of peninsular Malaysia
  2. Serum anti-Mullerian hormone in polycystic ovary syndrome and its relationship with insulin resistance, lipid profile and adiponectin
  3. Effect of oral supplementation of Channa striatus extract on total antioxidant status during wound healing in post lower segment caesarean section women
  4. Interactive low back pain intervention module based on the back school program: a cluster-randomized experimental study evaluating its effectiveness among nurses in public hospitals
  5. Comparison of vitamin d levels, bone metabolic marker levels, and bone mineral density among patients with thyroid disease: a cross-sectional study
  6. Relapsed/progressive disease and its prognostic factors among multiple myeloma patients receiving novel agent treatment in north east peninsular Malaysia: a single centre experience
  7. Family-doctor concept: does it improve type 2 diabetes mellitus patient's satisfaction and glycaemic control?
  8. Redundant serum creatinine test request in chemical pathology laboratory Hospital Universiti Sains Malaysia-a pilot study
  9. Protein induced by vitamin-k absence-II (PIVKA-II) levels among hepatocellular carcinoma patients in Hospital Universiti Sains Malaysia
Measurement, Psychometrics, Education & Behavioural Research 26 publications

2026

  1. Psychometric properties of the Chinese version of the athletic identity measurement scale plus: a confirmatory study on Chinese adolescents

2025

  1. Assessing community leaders' knowledge, attitudes, and perceptions on community-based surveillance of infectious diseases: development and validation of a questionnaire
  2. Psychometric validation of the Malay CMNI-30: a study among male healthcare professionals in Malaysia
  3. A confirmatory analysis of the knowledge, attitudes, and perceptions questionnaire for community-based surveillance of infectious diseases: a cross-sectional study in Malaysia
  4. Translation and validation of the Malay doctor-patient communication questionnaire: a cross-sectional study among patients receiving hemodialysis in Kelantan, Malaysia
  5. Development and validation of the resilience in self-care scale (RISE) among older adults with diabetes in northeast Malaysia
  6. Psychometric validation of a knowledge, attitudes, and practices (KAP) scale for breast cancer screening among Chinese women
  7. Translation and validation of the Malay patient measure of safety-10 (M-PMOS-10) to enhance patient safety in Malaysia: a cross-sectional study
  8. Empowering safe medication practices: translation and validation of the Malay inpatient medication-safety involvement scale (M-IMSIS)
  9. Development and validation of a group counselling resilience module intervention (gc-remi) among breast cancer patients

2024

  1. Development and validation of the needlestick injury prevention (n-sip) module
  2. Development and evaluation of the content and face validity for questionnaire knowledge, attitude, and practice on breast cancer among first degree relative breast cancer patients (KAP-BC-FDRQ)
  3. Psychometric properties of the Chinese version of the sport success scale: a confirmatory study on Chinese adolescents
  4. The content and face validity evaluation of an infection control knowledge, attitude and practice questionnaire among dental assistants

2023

  1. Master of Science in medical statistics programme at Universiti Sains Malaysia: 20 years ongoing
  2. Translation, cross-cultural adaptation and validation of movement behaviour questionnaire into Malay language (MBQ-M) for measuring movement behaviors among preschool children in Kelantan, Malaysia
  3. Validity and reliability of the Malay questionnaire for olfactory disorders
  4. Validation of employee job performance (EJP) scale in an arab working environment: the case of healthcare providers in emergency departments in Jordan

2022

  1. The association between preclinical medical students' perceptions of the anatomy education environment and their learning approaches
  2. Translation and validation of the Malay revised second victim experience and support tool (M-SVEST-R) among healthcare workers in Kelantan, Malaysia
  3. Psychometric properties of the Malay version of the behavioural regulation in exercise questionnaire (BREQ-3)
  4. Development and validation of a new knowledge, attitude, and practice questionnaire on COVID-19 pandemic control and prevention in Malaysia

2021

  1. A study of the factors affecting the academic performance of postgraduate examinees in the Master of Medicine (anesthesiology) part-1 examination

2020

  1. Universiti Sains Malaysia (USM) pre-clinical medical students' guidance and counselling needs questionnaire: a confirmatory factor analysis
  2. Mentoring needs among the phase 1 medical students in the Universiti Sains Malaysia
  3. Integrating experiential learning in an introductory financial accounting course to enhance learning: the FIFA approach
Biostatistics, Research Methods & Data Science 5 publications

2025

  1. Sample size determination for machine learning in medical research
  2. Community participation in community-based surveillance of infectious diseases: a structural equation modeling approach based on the Theory of Reasoned Action

2024

  1. Quantifying the health-economy trade-offs: mathematical model of COVID-19 pandemic dynamics

2021

  1. The malaysiandrg casemix system: financial implications of inaccurate clinical documentation and coding error

2020

  1. An easy-to-use computer program for standardisation methods of population morbidity data

Collaboration And Consultancy

Research collaboration, methodological support, study-planning discussion, and consultancy enquiries may be relevant when the project scope aligns with public health, epidemiology, biostatistics, clinical research, or evidence synthesis. Scope, feasibility, timing, and appropriate arrangements are considered through the Contact route, and no availability or outcome is implied by this page.