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Sage online ordering services are currently unavailable due to network disruption. We are working to restore service as soon as possible. In the meantime, our books are still available widely via retailers and online from Amazon.com.au. Currently we are only able to supply digital inspection copies. These can be requested via this site, or direct from Vitalsource and Kortext. If you need a print copy, please contact your local Academic Sales Consultant, who will be able to arrange to send this once our systems are back online.

If you need further assistance please visit our Contact us page for further information. Thank you for your patience and we apologise for the inconvenience.

Alexandru Cernat University of Manchester, UK

Alexandru Cernat is an associate professor in the social statistics department at the University of Manchester. He has a PhD in survey methodology from the University of Essex and was a post-doc at the National Centre for Research Methods and the Cathie Marsh Institute. His research and teaching focus on: survey methodology, longitudinal data, measurement error, latent variable modelling, new forms of data and missing data.