Table 1. Top 10 countries with smart elderly care research 1900–2021.
| No. | Countries | Number of papers |
| 1 | China | 299 |
| 2 | USA | 225 |
| 3 | England | 118 |
| 4 | Japan | 110 |
| 5 | Spain | 103 |
| 6 | Italy | 97 |
| 7 | India | 75 |
| 8 | Germany | 68 |
| 9 | Australia | 64 |
| 10 | France | 49 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.