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Now see what YOU can do… An exciting new approach to data presentation. Afzal Chaudhry Addenbrooke’s Hospital Cambridge. Introduction. Registry data high quality, validated 1997 onwards now all UK centres Annual report cross-sectional analysis (predominantly) parameter-based

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now see what you can do an exciting new approach to data presentation

Now see what YOU can do…An exciting new approach to data presentation

Afzal Chaudhry

Addenbrooke’s Hospital

Cambridge

introduction
Introduction
  • Registry data
    • high quality, validated
    • 1997 onwards
    • now all UK centres
  • Annual report
    • cross-sectional analysis (predominantly)
    • parameter-based
  • "Can we have…."
    • centre-based reports ?
    • longitudinal data ?
    • "What about…?"
un bon croquis vaut mieux qu un long discours
"Un bon croquis vaut mieux qu'un long discours"

Napoleon Bonaparte

"A good sketch isbetter

than a long speech"

interactive maps
Interactive Maps
    • Registry data (2003-2008)
    • RRT incidence & prevalence
    • acid-base control
    • bone mineral metabolism
    • BP control
    • control of anaemia
    • haemodialysis adequacy
    • data completeness
  • Public health data (courtesy of EMPHO)
    • circulatory disease mortality
    • ethnicity
    • indices of deprivation
data portal
Data Portal
  • Centre-specific reports
    • Flash based, PDF
    • distillation of annual data based around an individual centre
    • statistically robust
      • funnel plots
      • SPC charts
      • confidence intervals for ranking
  • Longitudinal statistical process control (SPC) charts
    • 'special cause variation'
    • "Shewart’s rules"
data portal8
Data Portal
  • Rosling-style motion charts
    • http://www.gapminder.org

ww.ted.com/talks/hans_rosling_shows_the_best_stats_you_ve_ever_seen.html

    • available via Google visualisation API
    • up to five parameters displayed simultaneously
    • complex data interplays
data portal9
Data Portal
  • OLAP pivot chart
    • online analytical processing
    • specifically optimized for reporting
    • rapid execution (0.1% time cf. normal)
    • "dimensions"
      • variables used for aggregation / summarising
      • heirarchical
    • "measures"
      • variables counted, summarised or aggregated
technical
Technical
  • CSRs
    • Registry data in an Excel template
    • consumed by bespoke VB.net software
    • data inserted into a custom Word template
  • Data portal
    • Adobe Flex front end, runs in Flash
    • desktop version available soon (AIR framework)
    • iOS compatible soon
    • MySQL database
    • WebORB for PHP middle layer
    • AMF (action message format) for data transfer
technical11
Technical

http://www.jamesward.com/2007/04/30/ajax-and-flex-data-loading-benchmarks/