Bob Erens

Senior Lecturer and Deputy Director, PIRU

Bob Erens's Background

I have over 25 years experience of applied social research and policy evaluation, with a particular focus on research and evaluation methods. Before joining LSHTM in 2011, I worked at the National Centre for Social Research (NatCen) in the UK, largely in the fields of health research and survey methods.

Bob Erens's Affiliation

Bob Erens's Research

I work with Prof Nick Mays and other colleagues from LSHTM, LSE, and Imperial College London in the Department of Health funded Policy Innovation Research Unit (PIRU). PIRU brings together experts in health and social care research and evaluation methodolgy to improve evidence-based policy-making and its implementation across the NHS, public health and social care ( Recent projects include evaluations of the Integrated Care Pioneers, the National Cold Weather Plan for England and the GP Patient Choice Scheme. 

With colleagues from LSHTM, UCL and NatCen, I am a co-applicant on the third National Survey of Sexual Attitudes and Lifestyles (Natsal-3), the largest repeated survey on sexual behaviour in the world. First results from Natsal-3 were published in The Lancet in November 2013. I lead a methodological project which compares results obtained from several volunteer web panel surveys with those from the main Natsal CAPI/CASI survey to determine the representativeness of UK web panels. A paper comparing results from Natsal-3 with four web surveys was published in the Journal of Medical Internet Research in December 2014.


Research areas

  • Health services research
  • Methodology
  • Public health
  • Sexual health


  • Social Policy
  • Social Sciences


  • United Kingdom

Other interests

  • Evaluation
  • Health Research
  • Health Service Integration
  • Health Survey Methods
  • Health Surveys
  • sexual behaviour
  • survey methods
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