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Institute of Population Health Sciences (IPHS)

Crystal Williams, BSc, MSc


Senior Data Analyst



Crystal Williams is a data analyst and a statistician in the Clinical Effectiveness Group. She has completed a BSc in Mathematics and an MSc in Medical Statics at London School of Hygiene and Tropical Medicine. She has a passion for applying statistical and epidemiological methods in primary care research to improve outcomes, as well as exploring health outcomes in different demographics and health measures such as multi-morbidity and obesity. She regularly uses a large east London primary care record research database set for her research, and her recent work includes looking at Covid-19 risk factors in different ethnicities in east London, and Covid-19 symptoms in children. She works with a number of different research groups, including collaborations with UCL and KCL.


Research Interests:

Research interests: Evaluating the effects of healthcare interventions using routine health data records, improving health outcome in primary care, electronic health records, ethnic inequalities, long term morbidities. 

Recent projects

  • Prevalence of suspected COVID-19 infection in patients from ethnic minority populations
  • Untangling the key symptoms of COVID-19 in paediatric population
  • Patterns in referral to Barts health following the COVID-19 first peak
  • Evaluation of a programme to reduce GP appointment DNAs in east London
  • GP continuity of care


Research group

Clinical Effectiveness Group


Key Publications

All Publications