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. 2020 May 27;8(5):e18092. doi: 10.2196/18092

Table 2.

Countries of origin of the included studies by total and thematic numbers (N=101).

Continent and country of origin Total number of studies by country, n Number of studies by theme



Prototype design (n=50) Validation (n=29) Observational (n=21) Reviews (n=1)
Europe

Belgium [32,38] 2 2 N/Aa N/A N/A
Finland [23] 1 N/A N/A 1 N/A
France [27,107] 2 N/A 2 N/A N/A
Germany [42,59,60,63,81,98,105] 7 4 2 1 N/A
Ireland [31,47] 2 2 N/A N/A N/A
Italy [3,25,26,29,30,33,36,37,46,48,49,53,54,56,58,64,76,79,84,92,99,108,110,116,120] 25 10 8 7 N/A
Poland [95,100] 2 N/A N/A 2 N/A
Portugal [68,71,75,80,102,113] 6 6 N/A N/A N/A
Slovakia [57] 1 1 N/A N/A N/A
Spain [39,50,62,101] 4 3 1 N/A N/A
Switzerland [28,34,55,72,83,100] 6 2 2 2 N/A
United Kingdom [45,52,82] 3 N/A 2 1 N/A
North America

Canada [35,74,87,104,114] 5 3 1 1 N/A
United States [21,41,61,65,66,73,85,93,96,97,106,109,117] 13 1 8 4 N/A
Asia

China [40,44,78,88,90] 5 5 N/A N/A N/A
India [43] 1 1 N/A N/A N/A
Japan [70] 1 1 N/A N/A N/A
Malaysia [111] 1 N/A 1 N/A N/A
South Korea [22,24,69,89,118,119] 6 5 1 N/A N/A
Taiwan [67] 1 1 N/A N/A N/A
Australia

Australia [112] 1 N/A N/A N/A 1
New Zealand [91,94,115] 3 N/A 1 2 N/A
South America

Chile [77,86,103] 3 3 N/A N/A N/A

aN/A: Not applicable.