Medical sociology · Social inequity · Malaysia

Making social research actionable.

I’m Chee-Yeong YAP, a sociologist working primarily in medical sociology and more broadly on social inequity. I study how social structures produce unequal outcomes—and where rigorous evidence can identify credible points for change.

Portrait of Chee-Yeong YAP
Based in Malaysia, working across medical sociology, public health, and the wider study of social inequity.

What I ask

How do social positions, institutions, and unequal resources shape the choices people can make and the outcomes they encounter?

How I work

Qualitative inquiry as my primary stance, strengthened by quantitative analysis and mixed-method integration.

Why it matters

To connect lived experience and statistical pattern with questions of access, responsiveness, and social equity.

From systems that could be calculated to lives that had to be understood.

EngineeringWork & societyHealth inequity

My academic journey began in engineering, where I learned to value precision, structure, and evidence. Yet the questions that stayed with me were not only technical: why do people living within the same society encounter such different possibilities, and why does suffering persist even when institutions are designed to help? Equations could describe a system, but they could not fully explain how that system was lived. Sociology gave me a language for those questions—and a way to study something that did not stay still.

During my master’s research, I examined industrialisation and work values in Malaysia. The project taught me the full craft of research: turning an intuition into a defensible question, building a study, analysing evidence, and carrying an argument into publication. It also exposed a limit. Mapping differences was valuable, but description alone could not show how those differences were produced or where change might begin.

That concern became urgent during my doctorate, when I studied the diagnostic pathways of people with nasopharyngeal carcinoma. Here, inequality had consequences measured in missed symptoms, costly travel, time away from work, delayed escalation, and heavier treatment. Drawing on intersectionality, critical realism, and patients’ accounts, I began tracing how culture, material conditions, social position, and institutional practice become consequential together. This work led to the Intersectional Categorical Influences Framework: an attempt to organise complexity without flattening it, and to move from identifying inequity toward locating credible points for action.

Qualitative inquiry remains my primary methodological stance, but engineering never entirely left my way of thinking. Quantitative and mixed-method research allow me to examine patterns, relationships, latent structures, and variation across groups; qualitative research helps explain how those patterns are produced and lived. Across health, work, and wider social inequity, the commitment is the same: research should be rigorous enough to withstand scrutiny, sensitive enough to recognise the people behind the evidence, and useful enough to clarify where change can begin.

Every encounter with a system begins in a life already shaped by society.

That life includes work, family, distance, cultural meaning, institutional trust, and the uneven capacity to act.

Four connected lines of inquiry.

Each begins with lived experience and asks how wider arrangements become consequential in everyday health and social life.

01 · Cancer pathways

Routes to diagnosis

Patient experience and the intersecting cultural, material, and institutional conditions shaping nasopharyngeal carcinoma diagnostic pathways in Malaysia.

Follow this question

02 · Framework development

From description to action

The Intersectional Categorical Influences Framework connects meaning, material conditions, institutions, consequences, and possible leverage points.

Explore ICIF

03 · Asian public health

Ageing, family & health

Cross-national collaboration on family function, self-efficacy, health self-management, loneliness, and ageing in Asian contexts.

See the collaboration

04 · Social change

Work in transition

Industrialisation, IR4.0, occupational change, labour, education, skills, and shifting work values in Malaysia.

Trace the change

Evidence, argument, contribution.

Three peer-reviewed articles spanning cancer equity, older-adult health, and industrial change.

2025 · Lead author

An integrative review of barriers to actionable intersectionality in cancer research

Yap, C.Y., & Chua, H.K. Discover Public Health, 22, 752.

An integrative synthesis of 77 studies examining why intersectionality in cancer research often remains descriptive and how analysis can become more actionable.

2025 · Co-author

Family function and health self-management ability among older adults from mountainous areas in China

Chen, J.H., Chen, M.F., Zain, N.M., Yap, C.Y., Yusuf, A., & Ying, B.H. BMC Public Health, 25, 1291.

A cross-national study using correlation, regression, mediation, and moderated mediation to examine family function, self-efficacy, income, and health self-management.

2023 · Lead author

Into IR4.0: Charting the social and occupational changes in industrialised Malaysia

Yap, C.Y., Chua, H.K., & Chin, Y.W. Kajian Malaysia, 41(2), 81–102.

A sociological account of industrialisation, technological change, work, occupations, education, and skills in Malaysia.

Theory matters when students can use it.

My teaching connects sociological ideas with Malaysian and comparative experiences of industrial, occupational, and social change.

  • Undergraduate sociology teaching and theory-to-context translation.
  • Self-instructional materials designed for distance and independent learning.
  • Assessment, grading, academic consultation, and structured feedback.
See my teaching approach

A research path in motion.

  • Ph.D. in Sociology
    Universiti Sains Malaysia
  • Two peer-reviewed public-health articles
    Cancer equity and older-adult health
  • Best Presenter
    International Postgraduate Colloquium for Multidisciplinary Research

Good research begins with a question worth following.

If you are working on patient experience, social inequity, cancer pathways, mixed-method research, or related teaching, I would be glad to hear from you.