Table 2 Scale and utilization of shared electronic health records (SEHR) in unscheduled care (HMOÂ =Â health maintenance organization; EDÂ =Â Emergency Department)
Setting | Population Size | Patients with a record | Patients opted-out % (n) | General Practices connected to SEHR % (n) | SEHR access |
|---|---|---|---|---|---|
51 million | 80% | 1.4% (714,000) | Not Reported | 3.2 accesses per GP per month (82,000 total) | |
5.1 million | 99% | 0.03% (2000) | 100% (970) | 46 accesses per GP per month (230,000 total) | |
Wales [5] | 3 million | 65% | Not Reported | 65% (290) | Not Reported |
Northern Ireland [5] | 1.8 million | 99% | Not Reported | 100% (354) | Not Reported |
United States of America | |||||
 Integrated Care Collaboration of Central Texas [35] | Not Reported | 6393 patients included in the study | 1.5% (96) | Two urban community health centers – both participated | 21% of all encounters |
 The Midsouth eHealth Alliance of Memphis Tennessee representing 12 major hospitals [33] | 1.7 million patients | 1.7 million | 1–3% (study conducted across multiple sites) | Not Reported | 6.8% of ED encounters |
 New York-Presbyterian Hospital/  Columbia University Medical Center [40] | 2.5 million patients | 2.5 million | Nil | Not Reported | 20–50% |
 Indiana Network for Primary Care [19] | Not Reported | 10.2 million records | Not Reported | Not Reported | 26% of all ED contacts |
 HealtheLink the regional health information exchange of Western New York [27] | Not Reported | 737 patients studied | 5.3% (39 patients) | Not Reported | 100% of records were accessed for patients in the study cohort |
 Rochester New York area [43] | 1.14 million | 800,000 | Nil | Not Reported | 14.21% of ED visits |
620,000 | 49% | 51% of people did not opt in | 95% | Not Reported | |
3.8 million | 100% | Not Reported | 100% | 23.7% of all ED encounters | |