Table 1. Basic information on regions and health information exchanges.
| Characteristics | Choukai Net | PicaPicaLink | |
|---|---|---|---|
| Estimated area population, na | 257,122 | 800,668 | |
| Population density of the area, people/km2b | 109.50 | 332.50 | |
| Proportion of population aged ≥65 years in the regionc, % | 36.10 | 30.60 | |
| Regional population growth rate from 2015 to 2020d, % | −5.76 | −2.57 | |
| Number of participating patients, na | 55,131 | 559,650 | |
| Number of data viewing institutions, n a | |||
| Hospital | 12e | 73 | |
| Medical clinic | 78 | 154 | |
| Dental clinic | 22 | 8 | |
| Pharmacy | 25 | 125 | |
| Visiting nursing station | 14 | 10 | |
| Nursing facilities | 83 | 22 | |
| Number of data disclosure institutions, na | 7 | 15 | |
| Year in which the health information exchange started operation | 2011 | 2010 | |
a
Aggregated values as of the end of March 2022.
b
Census data from the Ministry of Internal Affairs and Communications in 2020. The national average is 338.2 people/km2.
c
Census data from the Ministry of Internal Affairs and Communications in 2020. The national average is 28.6%.
d
Census data from the Ministry of Internal Affairs and Communications in 2015 and 2020. The national average is –0.75%.
e
Yamagata University Hospital, Yamagata Prefectural Central Hospital, Yamagata Prefectural Shinjo Hospital, Okitama Public General Hospital, and Sanyudo Hospital are excluded from the tally.