Table 3 Indirect indicators of burden of learning
Frequency | Percentage | |
|---|---|---|
I wear glasses | ||
No | 824 | 31.9 |
Yes | 1763 | 68.1 |
How long have you had bad eyesight? | ||
Since senior high school | 348 | 13.5 |
Since junior high school | 1322 | 51.1 |
Since before the above | 526 | 20.3 |
My eyesight has always been good | 391 | 15.1 |
How far is the book from your eyes? | ||
<15 cm | 505 | 19.5 |
15–20 cm | 1112 | 43.0 |
20–25 cm | 729 | 28.2 |
>25 cm | 241 | 9.3 |
I can smell smoke (secondhand smoke or smoking) | ||
No | 1703 | 65.8 |
Yes | 884 | 34.2 |
I drink alcohol | ||
No | 2289 | 88.5 |
Yes | 298 | 11.5 |
Do you often play a musical instrument? | ||
No | 2036 | 78.7 |
Yes | 551 | 21.3 |
Usual sleeping time | ||
Before 11:00 p.m. | 1243 | 48.0 |
11:00–12:00 p.m. | 1037 | 40.1 |
12:00 p.m.–1:00 a.m. | 236 | 9.1 |
After 1:00 a.m. | 71 | 2.7 |
I can fall asleep but don’t get enough sleep | ||
No | 905 | 35.0 |
Yes | 1682 | 65.0 |
I’m an insomniac and have too many dreams | ||
No | 1177 | 45.5 % |
Yes | 1410 | 54.5 % |