Table 2.
Distribution of categorical variables
| Categorical variables† | n (%) | ||||
|---|---|---|---|---|---|
| Ordinal variables | Level1 | Level2 | Level3 | Level4 | Level5 |
| Online class | 24(8.00) | 161(53.66) | 83(27.67) | 21(7.00) | 11(3.67) |
| Interest class | 40(13.33) | 201(67.00) | 51(17.00) | 6(2.00) | 2(0.67) |
| Outdoor activity | 10(3.33) | 182(60.67) | 100(33.33) | 7(2.33) | 1(0.33) |
| Parents with high myopia | 213(71.00) | 78(26.00) | 9(3.00) | NA | NA |
| Unordered variables | |||||
| Reading and writing posture |
Correct posture 64(21.33) |
Head tilted left 115(38.33) |
Head tilted right 27(9.00) |
Short distance 86(28.67) |
Read on bed 8(2.67) |
| Direction of decentration |
Superonasal 13(2.40) |
Superotemporal 150(27.68) |
Inferotemporal 356(65.68) |
Inferonasal 23(4.24) |
|
†The direction of decentration was presented as number of eyes (542 eyes), other parameters were described based on the number of patients (300 patients)