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Published byHubert Simmons Modified over 8 years ago
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The Review of the Dissemination of Health Statistics Carole Abrahams Office for National Statistics
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The health review Increased interest in health statistics Changing legal environment Need for standard guidance Two sets of guidance: –Abortion statistics –All other published health statistics Accepted as GSS standard
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Framework for confidentiality protection Determine users’ requirements Understand the data Are there circumstances where disclosure is likely to occur? If so, would disclosure represent a breach of public trust, law or policy? If required select appropriate disclosure control methods Implement and disseminate
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Disclosure control methods Maximise utility while reducing risk to an acceptable level Methods for applying disclosure control -Table redesign -Rounding -Suppression -Perturbation -Record swapping Alternative methods for presenting data
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Implementation of the Health Review and the Guidance Project led by ONS Stakeholders Dissemination plan –Recording –Templates –Training Evaluation and report
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Conceptions data – an example Government target to reduce under-18 conception rate by 50% by 2010 Requirement for information by small area Three SDC methods used: –Data for 3 years combined –E&W data divided into quintiles –Suppression for small populations Maps produced on NeSS at the ward level
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Under 18 conceptions for wards in London Jan 2001 – Dec 2003 Kensington & Chelsea
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