Design and use of questionnaires: a review of best practice applicable to surveys of health service staff and patients E McColl 1* A Jacoby 1 L Thomas 1 J Soutter 1 C Bamford 1 N Steen 1 R Thomas 2 E Harvey 3 A Garratt 3 J Bond 1 1 Centre for Health Services Research, University of Newcastle, UK 2 National Centre for Social Research, London, UK 3 Department of Health Sciences, University of York, UK * Corresponding author HTA Health Technology Assessment NHS R&D HTA Programme Health Technology Assessment 2001; Vol. 5: No. 31 Methodology Executive summary Design and use of questionnaires