· There were 17.6 million accident and emergency attendances recorded at major A&E departments, single specialty A&E departments, walk-in centres and minor injury units in England; an increase of 8.5 per cent from 2010-11.
· Data is incomplete; there are 17.3 million attendances reported in A&E HES (excluding planned follow-up attendances), compared to 21.5 million reported in the Department of Health's Weekly A&E situation reports (Sit Reps) aggregate data for the equivalent period.
· There are 200 providers with attendances recorded in A&E HES compared to 273 providers who have submitted A&E attendances via Weekly A&E Sit Reps. Weekly A&E Sit Reps has seen an increase in the number of walk in centres and minor injury units, some of which do not currently submit data to HES .
· Of the 73 providers that do not submit A&E data to HES, 33 are primary care trusts (PCTs), 10 are trusts, 2 are care trusts and 28 are other (including walk in centres, minor injury units and private providers)1.
· 43.4 per cent (7.7 million) of all A&E attendances were for patients aged 29 or under, 16.3 per cent (2.9 million) were for patients aged 20-29. Just over half of all A&E attendances (50.5 per cent) were male.
· 24.2 per cent (4.3 million) of all arrivals at A&E were by ambulance or helicopter, compared to 25.8 per cent (4.2 million) of all arrivals in 2010-11.
· 62.6 per cent (11.0 million) of all attendances at A&E had a valid diagnosis code and 13.4 per cent (2.4 million) of all attendances had a diagnosis of 'Diagnosis not classifiable' recorded.
· 92.9 per cent (16.4 million) of all attendances had a valid treatment code, an 18.2 percentage point increase from 2010-11. 34.4 per cent (6.1 million) of all attendances had a recorded treatment of 'guidance/advice only'.
· 58.4 per cent (10.3 million) of all attendances were discharged ('GP follow-up required' or 'no follow-up required') and 20.7 per cent (3.7 million) of all attendances were admitted to hospital.
 Due to some providers submitting data to both A&E HES and Weekly A&E Sit Reps at different levels of aggregation in 2011-12, the provider counts have been consolidated to the 3 character provider code level. This has been done to allow comparison between the two data collections.