Table 3. Basic information of the three groups at baseline.
| Groups | Age | Sexual distribution |
UDVA | Spherical diopter (D) | Cylinder degree (D) | |
| Male, n (%) | Female, n (%) | |||||
| Group A | 30.29±7.33 | 28 (13.53) | 179 (86.47) | 0.84±0.37 | -4.02±2.03 | -0.60±0.12 |
| Group B | 30.08±7.45 | 24 (17.02) | 117 (82.98) | 0.90±0.40 | -4.28±2.43 | -1.24±0.26 |
| Group C | 31.11±7.88 | 8 (22.22) | 28 (77.78) | 1.00±0.38 | -5.04±1.48 | -2.38±0.44 |
| H | 0.495 | 2.088 | 4.287 | 9.300 | 320.575 | |
| P | 0.781 | 0.352 | 0.117 | 0.010 | <0.001 | |
Group A: Cylinder degree range of -0.75 to -0.50 D; Group B: Cylinder degree range of -1.75 to -1.00 D; Group C: Cylinder degree ≤-2.00 D; D: Diopter; UDVA: Uncorrected distance visual acuity; H: Test statistics for Kruskal-Wallis H test.