Table 1.
Univariate parametric and nonparametric analysis.
| Variable | Total (%) | Progression of Myopic Symptoms (Yes = 1, No = 0) | ||||||
|---|---|---|---|---|---|---|---|---|
| n | % | p | ||||||
| Progression of Myopic Symptoms | ||||||||
| Yes | 39.9 | - | - | - | ||||
| No | 60.1 | - | - | - | ||||
| Sex a | ||||||||
| Female | 48.4 | 672 | 40.8 | 0.289 | ||||
| Male | 51.6 | 686 | 39.0 | |||||
| Grade of Enrolment a | ||||||||
| Primary | 65.6 | 711 | 31.8 | 0.000 | ||||
| Lower-Secondary | 7.9 | 135 | 50.2 | |||||
| Upper-Secondary | 26.5 | 512 | 56.8 | |||||
| Location of Residence a | ||||||||
| Rural | 15.6 | 196 | 37.0 | 0.178 | ||||
| Urban–Rural | 7.3 | 92 | 37.1 | |||||
| Urban | 77.1 | 1070 | 40.7 | |||||
| Pre-Pandemic Myopia Condition a | ||||||||
| Yes | 40.4 | 806 | 58.7 | 0.000 | ||||
| No | 59.6 | 552 | 27.2 | |||||
| e-Learning Screen Use, diopter hours per day (mean, s.d., range) b | 10.0, 6.3, 2–21 | mean (1) − mean (0) = 3.7 | 0.000 | |||||
| e-Learning Screen Use, unadjusted hours per day (mean, s.d., range) b | 3.9, 2.3, 1–10 | mean (1) − mean (0) = 1.4 | 0.000 | |||||
| Outdoor Exercise a | ||||||||
| Frequent (daily) | 18.2 | 250 | 40.3 | 0.000 | ||||
| Somewhat Frequent (4–6 times/week) | 11.7 | 132 | 33.2 | |||||
| Somewhat Infrequent (1–3 times/week) | 46.5 | 588 | 37.2 | |||||
| Infrequent (0 times/week) | 23.6 | 388 | 48.3 | |||||
| Indoor Lighting Condition a | ||||||||
| Too Dim | 6.1 | 133 | 63.9 | 0.000 | ||||
| Too Bright | 2.8 | 55 | 57.3 | |||||
| Feels Okay | 91.1 | 1170 | 37.7 | |||||
Notes: a p-value based on χ2 test, b p-value based on t-test.