Table 2 Scale and utilization of shared electronic health records (SEHR) in unscheduled care (HMO = health maintenance organization; ED = Emergency Department)
| Setting | Population Size | Patients with a record | Patients opted-out % (n) | General Practices connected to SEHR % (n) | SEHR access |
|---|---|---|---|---|---|
| England [5,6,7,8,9, 38] | 51 million | 80% | 1.4% (714,000) | Not Reported | 3.2 accesses per GP per month (82,000 total) |
| Scotland [5, 26] | 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 |
| Holland (Twente region) [20, 21] | 620,000 | 49% | 51% of people did not opt in | 95% | Not Reported |
| Israel (HMOs) [22,23,24,25] | 3.8 million | 100% | Not Reported | 100% | 23.7% of all ED encounters |
