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Purdon, Susan, Campanelli, Pamela and Sturgis, Patrick 
ORCID: 0000-0003-1180-3493
(1999)
Interviewer's calling strategies on face-to-face interview surveys.
Journal of Official Statistics, 15 (2).
ISSN 0282-423X
Bryson, Alex, Dorsett, Richard and Purdon, Susan (2002) The use of propensity score matching in the evaluation of active labour market policies. Department for Work and Pensions working paper (4). Department for Work and Pensions.
Sturgis, Patrick ORCID: 0000-0003-1180-3493, Thomas, Roger, Purdon, Susan, Bridgwood, Anne and Dodd, Tricia
(2001)
Comparative review and assessment of key health state measures of the general population.
.
Great Britain. Department of Health, London, UK.
