What data did we collect

  • Details of patient encounters.
  • Details of Read coded diagnoses, results, problems and procedures 
  • Details of measurements.
  • Details of issued prescriptions.
  • Date of birth (only month and year), gender and postcode to sector level (e.g. G43 2), registered clinician.
  • Clinician cypher, if present, for each clinician.

Limitations of data

Our data collection is reliant on the data entry systems and completeness within our contributing Practices. Some of these Practices may be 'paperlight' with more complete data entry relating to consultations. The majority will utilise a mixed system of computer and paper recording.

Prescription data and diagnosis coding for Clinical summaries is expected to be quite complete, particularly looking back over the last 10 years. In addition, from 2003, items relating to QOF will be well recorded.

Data relating to consultations and types of encounters are collected but is expected that this data may be less accurate.

We do not collect patient or clinician identifiable data, nor do we collect any free text (clinical notes).

Data Archive

We have collected clinical data from general practice for several years. Subsets of these data are available (subject to approval and by following the PCCIUR application process).

Dataset Total Practices
Spring 2007 318
Autumn 2007 272
Spring 2008 240
Autumn 2008 212
Spring 2009 191
Autumn 2009 178
Spring 2010 173
Autumn 2010 133

QOF & Calendar Year Populations

We combined the latest data we received from each Practice since spring 2007 into a single dataset. There are 393 Practices. Using this dataset, we identified the following numbers of patients registered for at least one day in the time period given.

Search StartDate EndDate Practices Patients
QOF Year 2010/11 01/04/2010 31/03/2011 54 317,392
QOF Year 2009/10 01/04/2009 31/03/2010 172 1,069,264
QOF Year 2008/09 01/04/2008 31/03/2009 241 1,487,581
QOF Year 2007/08 01/04/2007 31/03/2008 292 1,723,680
QOF Year 2006/07 01/04/2006 31/03/2007 368 2,191,185
Calendar Year 2010 01/01/2010 31/12/2010 87 551,837
Calendar Year 2009 01/01/2009 31/12/2009 194 1,232,709
Calendar Year 2008 01/01/2008 31/12/2008 244 1,508,304
Calendar Year 2007 01/01/2007 31/12/2007 299 1,744,349
Calendar Year 2006 01/01/2006 31/12/2006 393 2,311,937

The number of Practices contributing data to a given time period varies as the data were collected from Practices during different seasons and years. This is why fewer or more patients are found for similar time periods. The table below shows the number of Practices from the combined dataset with complete data recorded up to the given season.

Season Practices
Spring 2007 393
Autumn 2007 336
Spring 2008 299
Autumn 2008 267
Spring 2009 244
Autumn 2009 220
Spring 2010 194
Autumn 2010 139
Spring 2011 87