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. 2023 Jan 11;20(2):1313. doi: 10.3390/ijerph20021313

Table 4.

Severity of dry eye, according to the OSDI, in the study participants by selected behavioral and environmental factors (n = 312).

Independent Trait Normal Mild Moderate Severe aOR
p-Value
n % n % n % n %
How many hours a day do you spend in close proximity to the screen of an electronic device, e.g., mobile phone, computer, tablet, reader (not taking into account a TV set)?
 <4 29 21.6 11 14.3 6 13.3 3 5.4 =1.37
=0.006
 4–8 65 48.5 49 63.6 24 53.4 25 44.6
 >8 40 29.9 17 22.1 15 33.3 28 50.0
How many hours a day do you spend in front of the screen of an electronic device (not taking into account a TV set), without taking breaks?
 <1 32 23.9 6 7.8 8 17.8 5 8.9 =1.16
=0.016
 1–2 56 41.8 43 55.8 19 42.2 23 41.1
 3–4 26 19.4 23 29.9 11 24.4 19 33.9
 >4 20 14.9 5 6.5 7 5.6 9 16.1
How many hours a day do you spend outdoors?
 <1 39 29.1 25 32.5 16 35.6 21 37.5 =0.261
 1–4 75 56.0 48 62.3 22 49.9 31 55.4
 >4 20 14.9 4 5.2 7 15.6 4 7.1
How many hours a day do you spend in air-conditioned interiors?
 <1 83 61.9 44 57.1 24 53.3 34 60.8 =0.648
 1–4 30 22.4 21 27.3 9 20.0 11 19.6
 >4 21 15.7 12 15.6 12 26.7 11 19.6
Regular, daily basis use tobacco products 32 23.9 11 14.3 15 33.3 16 28.6 =0.078
History of SARS-CoV-2 infection 75 56.0 34 44.2 25 55.6 39 69.6 =0.036

aOR—adjusted odds ratio; the adjutancy procedure comprised the participants’ age, gender, place of residence, faculty, refraction error, use of contact lenses, comorbidities, medicines taken.