Variable | N = 11,138 | n = 7814 | prevalence | χ2 | P |
---|---|---|---|---|---|
Basic Information | |||||
Sex | 77.91 | 0.000 | |||
female | 7980 | 5792 | 72.58 | ||
male | 3149 | 2018 | 64.08 | ||
Area | 76.89 | 0.000 | |||
Rural | 6877 | 4622 | 67.21 | ||
Urban | 4239 | 3181 | 75.04 | ||
Year of study | 7.35 | 0.118 | |||
1 | 4276 | 2990 | 69.93 | ||
2 | 3935 | 2755 | 70.01 | ||
3 | 2260 | 1615 | 71.46 | ||
4 | 513 | 361 | 70.37 | ||
5 | 142 | 87 | 61.27 | ||
Genetic factors | |||||
Family members’ myopia statuses | 18.23 | 0.000 | |||
both parents | 245 | 221 | 90.20 | ||
one parent | 1448 | 1138 | 78.59 | ||
no parent | 9445 | 6455 | 68.34 | ||
Environmental factors | |||||
Often see green | 0.73 | 0.390 | |||
No | 4221 | 368 | 8.72 | ||
Yes | 6915 | 636 | 9.20 | ||
Perform eye exercises | 74.83 | 0.000 | |||
Insist on performing | 325 | 181 | 55.69 | ||
Sometimes | 3581 | 2399 | 66.99 | ||
Rarely | 6522 | 4755 | 72.91 | ||
Will not perform | 699 | 475 | 67.95 | ||
Eye drops | 38.66 | 0.000 | |||
No | 5993 | 4055 | 67.66 | ||
Yes | 5143 | 3758 | 73.07 | ||
People around them stay up late | 4.15 | 0.042 | |||
No | 6957 | 4833 | 69.47 | ||
Yes | 4177 | 2978 | 71.30 | ||
Inadequate diet | 8.67 | 0.003 | |||
No | 4748 | 3261 | 68.68 | ||
Yes | 6382 | 4548 | 71.26 | ||
Take a break after reading 1 h | 165.41 | 0.000 | |||
No | 8722 | 6375 | 73.09 | ||
Yes | 2416 | 1439 | 59.56 | ||
Use a lamp | 103.54 | 0.000 | |||
No | 2224 | 1364 | 61.33 | ||
Yes | 8913 | 6450 | 72.37 | ||
Habit of staying up late | 30.95 | 0.000 | |||
No | 5330 | 3607 | 67.67 | ||
Yes | 5797 | 4203 | 72.50 | ||
Stay up late for homework | 9.61 | 0.002 | |||
No | 5398 | 3712 | 68.77 | ||
Yes | 5735 | 4098 | 71.46 | ||
Stay up late for study section review | 1.67 | 0.195 | |||
No | 7869 | 5492 | 69.79 | ||
Yes | 3265 | 2319 | 71.03 | ||
Stay up late because of pressure to study | 0.81 | 0.370 | |||
No | 6023 | 4717 | 78.32 | ||
Yes | 5111 | 3640 | 71.22 | ||
Search for information online | 17.01 | 0.000 | |||
No | 3200 | 2155 | 67.34 | ||
Yes | 7936 | 5658 | 71.30 | ||
When they started using a computer | 3.48 | 0.180 | |||
Primary school | 1118 | 804 | 71.91 | ||
High school | 5470 | 3860 | 70.57 | ||
University | 4532 | 3143 | 69.35 | ||
Frequency of computer use | 3.1 | 0.380 | |||
Every day | 3359 | 2344 | 69.78 | ||
2–4 times a week | 4025 | 2814 | 69.91 | ||
1 time per week | 2206 | 1544 | 69.99 | ||
Almost none | 1537 | 1108 | 72.09 | ||
Computer use per day | 4.17 | 0.125 | |||
Less than 1 h | 3270 | 2338 | 71.50 | ||
1–3 h | 6098 | 4259 | 69.84 | ||
More than 3 h | 1753 | 1210 | 69.02 | ||
Bedtime | 31.04 | 0.000 | |||
Before 10:00 | 283 | 157 | 55.48 | ||
10:00–12:00 | 8156 | 5776 | 70.82 | ||
After 12:00 | 1961 | 1367 | 69.71 | ||
No rule | 730 | 511 | 70.00 | ||
Read for long durations | 1586.92 | 0.000 | |||
No | 5906 | 3250 | 55.03 | ||
Yes | 5086 | 4557 | 89.60 | ||
Read while lying down | 9.26 | 0.002 | |||
No | 2246 | 1517 | 67.54 | ||
Yes | 8886 | 6294 | 70.83 | ||
Read under dim light | 3.84 | 0.050 | |||
No | 2374 | 1627 | 68.53 | ||
Yes | 8758 | 6184 | 70.61 | ||
Depression | 8.32 | 0.004 | |||
No | 5270 | 3628 | 68.84 | ||
Yes | 5860 | 4181 | 71.35 | ||
Eye rubbing | 19.04 | 0.000 | |||
No | 2752 | 1840 | 66.86 | ||
Yes | 8379 | 5970 | 71.25 |