Table 1.
Demographics of subjects and daily meteorological factors
| Tokyo | Osaka | Fukuoka | |||||
|---|---|---|---|---|---|---|---|
| Total, n (%) | 50,698 | (100) | 34,283 | (100) | 12,519 | (100) | |
| Sex | Male | 29,685 | (59) | 19,565 | (57) | 7145 | (57) |
| Female | 21,013 | (41) | 14,718 | (43) | 5374 | (42) | |
| Age | 40–59 years | 6342 | (13) | 4146 | (12) | 1537 | (12) |
| 60–69 years | 8274 | (16) | 6016 | (18) | 2012 | (16) | |
| 70–79 years | 12,935 | (26) | 9429 | (28) | 3234 | (25) | |
| 80–89 years | 15,848 | (31) | 10,287 | (30) | 4061 | (31) | |
| ≥90 years | 7299 | (14) | 4405 | (13) | 1675 | (13) | |
| Meteorological factors, mean (s.d.) | |||||||
| Temperature, °C | 16.6 | (8.0) | 17.1 | (8.4) | 17.3 | (8.0) | |
| Relative humidity, % | 59.7 | (15.4) | 62.7 | (10.7) | 65.6 | (11.5) | |
| Atmospheric pressure, hPa | 1009.3 | (6.7) | 1005 | (6.3) | 1013.5 | (6.8) | |
| Daily hours of daylight, hours | 5.2 | (4.0) | 5.6 | (3.9) | 5.1 | (4.0) | |
| Daily precipitation, mm | 4.4 | (12.7) | 3.6 | (9.6) | 4.5 | (13.3) | |
| Wind speed, m/s | 3.1 | (1.0) | 2.4 | (0.8) | 2.8 | (1.1) | |