Table 1.
Relevant previous surveys in Japan.
| MHLW | MHLW | Kurihama | Kurihama | Nikkoso | Hayano | |
|---|---|---|---|---|---|---|
| Survey year | 2008 | 2013 | 2016 | 2017 | 2017 | 2020 |
| Survey area | Nationwide | Nationwide | 11 cities | Nationwide | Nationwide | Nationwide |
| Age range | 20– | Undisclosed | Undisclosed | 20–74 | 18–79 | 20–89 |
| Survey method | Random sampling | Random sampling | Random sampling | Random sampling | Random sampling | Online |
| Sample size | 7500 | 7052 | 2200 | 10,000 | 9000 | 492,963 |
| Valid responses | 4123 | 4153 | 993 | 4685 | 5060 | 42,880 |
| Participants in the past year | Not surveyed | Not surveyed | Undisclosed | Undisclosed | 582 | 14,780 |
| Prevalent (disability) | M9.6% F1.6%a | 4.8%a | 26 (2.7%) | 158 (3.6%) | Not surveyed | Not surveyed |
| Prevalent (past 1 year) | Not surveyed | Not surveyed | 5 | 32 | 21 | 1826 |
aOnly percentages are reported.