We have now received the four datasets (A&E, APC, CIDS, OP) for 01/01/2013 to 31/12/2013.
A few additional fields were included in this extract: ethnic category, additional diagnosis codes (for identifying patients with LTC), finance costs and a risk score. Not all datasets included these additional fields. The following table identifies which fields were included with which datasets:
| AE | APC | CIDS | OP | |
| Ethnic category | ? | ? | ? | ? |
| Additional diagnosis codes | ? | |||
| Finance costs | ? | |||
| Risk score | ? | ? | ? |
The following table shows a summary of activity for each dataset for the calender year 2013:
| AE | APC | CIDS | OP | |
| Number of records | 271,011 | 304,508 | 470,091 | 1,606,059 |
| Number of unique PseudoNHS | 176,660 | 140,264 | 66,651 | 323,898 |
The following table shows the number of null/blank records for each dataset:

Chris M is the founder and managing director of Mayden. He has 21 years of experience in the healthcare industry, where he worked as a hospital manager and later as a management consultant specialising in information analysis and modelling.
Chris E is Mayden‘s director of operations and has been with the company since 2009. He has a background in mechanical engineering, and studied at postgraduate level at Cambridge University.
Coralie has a first class bachelors degree in cybernetics and control engineering as well as a masters degree in biomedical engineering. She has ten years’ experience in IT and software development.
Juliette is our in-house Tableau specialist. She has 20 years experience in health analytics, and has worked for NHS Trusts, a leading health management consultancy as a freelance analyst.
Alison is a director at Mayden and oversees organisational development, business development and marketing. Having started her working life as a graduate General Management Trainee in the NHS, she went on to hold a number of operational and strategic management positions in acute and community sectors before moving into management consultancy with one of the UK’s leading specialist healthcare consultancy firms.