Table 1.
Area descriptions and backgrounds of elderlies in each household
| Sapporo | Sendai | Saitama | Tokyo’s 23 wards | Chiba | Kobe | Kitakyushu | Nagasaki | All | |
|---|---|---|---|---|---|---|---|---|---|
| Latitude of areaa (°N) | 43.03 | 38.16 | 35.53 | 35.41 | 35.36 | 34.42 | 33.51 | 32.44 | |
| Average year value of mean air temperature in Augusta (°C) | 22.3 | 24.2 | 26.6 | 27.4 | 26.7 | 28.3 | 27.4 | 27.9 | |
| Average year value of days with temperatures exceeding 30 °Ca (days) | 8.0 | 17.9 | 52.9 | 48.5 | 42.3 | 54.9 | 54.5 | 54.2 | |
| Average year value of mean relative humidity in Augusta (%) | 75 | 81 | N.A. | 71 | 78 | 71 | N.A. | 75 | |
| Number of responses (n) | 763 | 410 | 488 | 3,386 | 363 | 663 | 258 | 125 | 6,456 |
| Sex | |||||||||
| Male (%) | 47.4 | 55.6 | 56.4 | 52.6* | 61.2* | 55.8* | 53.1 | 43.2 | 53.1* |
| Age | |||||||||
| Average [years, (SD)] | 74.2* (7.2) | 74.8* (7.4) | 74.2* (7.8) | 75.0* (7.4) | 73.3* (7.0) | 74.3* (7.4) | 74.6* (7.4) | 75.8* (7.5) | 74.7* (7.4) |
| Respondent | |||||||||
| Surrogate reporting (%) | 77.1 | 82.2 | 73.4 | 77.8 | 65.8 | 70.1 | 78.7 | 80.8 | 76.3 |
| Room | |||||||||
| Sitting cum bedroom (%)b | 19.1* | 20.0 | 26.0 | 30.5* | 24.0* | 31.2* | 31.4* | 25.6 | 27.8* |
* Statistically significant (p < 0.05) difference between self-reporting and surrogate reporting by χ2 test/Fisher’s exact test for 2 × 2 table or t test for means
aAdopted from Japan Meteorological Agency
bSeparate rooms for sitting room and bedroom, otherwise