Table S1.
Participated schools and students, and the ratio of participants who fully responded to the questionnaire
| School | Total | Fully responded | |
|---|---|---|---|
| Elementary | |||
| A | 122 | 70 | 57.4% |
| B | 121 | 81 | 66.9% |
| C | 234 | 119 | 50.9% |
| Subtotal | 477 | 270 | 56.6% |
| Junior high | |||
| D | 364 | 296 | 81.3% |
| E | 341 | 284 | 83.3% |
| F | 568 | 470 | 82.7% |
| Subtotal | 1,273 | 1,050 | 82.5% |
| Senior high | |||
| J | 497 | 314 | 63.2% |
| H | 341 | 290 | 85.0% |
| I | 946 | 793 | 83.8% |
| Subtotal | 1,784 | 1,397 | 78.3% |
| University | |||
| J | 36 | 29 | 80.6% |
| K | 87 | 73 | 83.9% |
| L | 78 | 64 | 82.1% |
| M | 54 | 46 | 85.2% |
| N | 330 | 295 | 89.4% |
| Subtotal | 585 | 507 | 86.7% |
| Total | 4,119 | 3,224 | 78.3% |