fariza fadzil, idayu badilla idris, norazlin kamal nor, juriza ismail, azmi mohd tamil, kamaliah mohamad noh, noraziani khamis , noor ani ahmad, salimah othman and rohana ismail.  (2022).  missed appointments at a child development centre and barriers to access special needs services for children in klang valley, malaysia: a mixed methods study.  - international journal of environmental research and public health.  1-20. 

mohd faiz ibrahim,rozita hod, haidar rizal toha, azmawati mohamed nawi, idayu badilla idris, hanizah mohd yusoff, mazrura sahani.  (2021).  the impacts of illegal toxic waste dumping on children's health: a review and case study from pasir gudang, malaysia.  - international journal of environmental research and public health.  1-16. 

vikneswaran sabramani, idayu badilla idris, halim ismail, thiyagar nadarajaw, ezarina zakaria, mohammad rahim kamaluddin.  (2021).  bullying and its associated individual, peer, family and school factors: evidence from malaysian national secondary school students.  - international journal of environmental research and public health.  1-28. 

sze hui new, sue ngein leow, suresh kumar vasudevan, idayu badilla idris, seng fai tang, norshamsiah md din.  (2021).  relationship between anthropometric and biochemical changes of metabolic syndrome with retinal nerve fiber layer and macular thickness.  - plos one.  1-13. 

norhafizah sahril, noor ani ahmad, idayu badilla idris, rajini sooryanarayana, mohamad aznuddin abd razak.  (2021).  factors associated with mental health problems among malaysian children: a large population-based study.  - children - basel.  119-131. 

nik nairan abdullah, idayu badilla idris, khadijah shamsuddin, nik muhd aslan abdullah.  (2020).  health-related quality of life in malaysian gastrointestinal cancer patients and their family caregivers-a comparison study.  - supportive care in cancer.  1891-1899. 

idayu badilla idris, jane barlow, alan dolan.  (2019).  a longitudinal study of emotional and behavioral problems among malaysian school children.  - annals of global health.  1-10. 

azimatun noor aizuddin, siti waffa abdul jabar, idayu badila idris.  (2019).  factors associated with health services financier among temporary sheltered homeless in urban malaysia.  - bmc public health.  1-10. 

sharifa ezat wp, roslina am, tidi maharani hassan, izzah syazwani ahmad, fariza md sham, andrea yl ban,soo ci, rashidi mohamed pm, ahmad irdha mokhtar, hazli zakaria, idayu bi, lee jing, amer siddiq an, suthahar ariaratnam, zaliman my.  (2018).  the use of e-cigarettes among malaysia's university students.  - tobacco induced diseases.  .