Table 1.
Mean of prefecture-specific average annual statistics for suicide and climatic, demographic, and socioeconomic indicators.
| Category | Mean (SD)1 |
|---|---|
| Suicide | |
| Annual suicide count (deaths) | 516.2 (435.6) |
| Annual suicide rate (deaths/100,000) | 20.9 (3.15) |
| Annual proportion of violent suicide (%) | 84.0 (3.01) |
| Annual proportion of female suicide (%) | 33.7 (2.38) |
| Annual proportion of people aged 15–64 y in the total suicide count (%) | 71.7 (4.32) |
| Annual proportion of people aged over 65 y in the total suicide count (%) | 28.0 (4.36) |
| Climatic | |
| Annual mean temperature (°C) | 15.1 (2.34) |
| Annual mean dewpoint temperature (°C) | 9.5 (2.19) |
| Demographic | |
| Annual total population (thousands) | 2,608 (2440) |
| Annual proportion of people aged over 65 y (%) | 16.4 (2.29) |
| Annual proportion of females (%) | 51.8 (1.02) |
| Annual proportion of people who have subjective symptoms (%) | 29.4 (1.84) |
| Annual proportion of outpatients (%) | 30.0 (1.78) |
| Socioeconomic | |
| Annual economic power index | 0.47 (0.20) |
| Annual prevalence of air conditioning (%) | 57.7 (16.71) |
| Annual proportion of people having completed up to college or university (%) | 20.1 (4.91) |
| Annual unemployment rate (%) | 4.0 (1.03) |
1
The mean and standard deviation (SD) were calculated over 47 prefectures using the prefecture-specific average annual statistics for 1972–2015.