Table 1 Baseline characteristics of the study participants.
From: Wearing face masks and possibility for dry eye during the COVID-19 pandemic
Variables | Wearing of face mask | All | χ2 | P valuea | |||
|---|---|---|---|---|---|---|---|
No | Yes | ||||||
N | % | N | % | N | |||
Age, years | |||||||
≤ 10 | 69 | 7.25 | 1177 | 19.71 | 1246 | 134.684 | < .001 |
11–20 | 562 | 59.03 | 3170 | 53.07 | 3732 | ||
21–30 | 48 | 5.04 | 403 | 6.75 | 451 | ||
31–40 | 124 | 13.03 | 750 | 12.56 | 874 | ||
≥ 41 | 149 | 15.65 | 473 | 7.92 | 622 | ||
Sex | |||||||
Male | 459 | 48.21 | 2738 | 45.84 | 3197 | 1.863 | .172 |
Female | 493 | 51.79 | 3235 | 54.16 | 3728 | ||
Schooling | |||||||
Primary school | 105 | 11.03 | 1784 | 29.87 | 1889 | 155.849 | < .001 |
Middle school | 344 | 36.13 | 1904 | 31.88 | 2248 | ||
High school | 187 | 19.64 | 799 | 13.38 | 986 | ||
University or graduate | 316 | 33.19 | 1486 | 24.88 | 1802 | ||
Daily mask wearing time, h | |||||||
0–4 | 812 | 85.29 | 1964 | 32.88 | 2776 | 958.288 | < .001 |
4–6 | 87 | 9.14 | 1199 | 20.07 | 1286 | ||
6–8 | 40 | 4.20 | 1593 | 26.67 | 1633 | ||
≥ 8 | 13 | 1.37 | 1217 | 20.38 | 1230 | ||
