TABLE 1.
Baseline demographics and biometric data of children enrolled in the study.
| One‐year follow‐up time | Three‐year follow‐up time | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| All | 8–11 years old | Ortho‐k (n = 150) | ||||||||
| Ortho‐k (n = 588) | Spectacle (n = 588) | p Value | Ortho‐k (n = 341) | Spectacle (n = 384) | p Value | Subgroup 1 (n = 50) | Subgroup 2 (n = 50) | Subgroup 3 (n = 50) | p Value | |
| Age (year) | 10.88 ± 1.88 | 10.94 ± 1.92 | 0.99 a | 10.02 ± 1.09 | 10.17 ± 1.07 | 0.23 a | 9.56 ± 1.09 | 9.74 ± 1.07 | 9.94 ± 1.20 | 0.24 b |
| Sex (M/F) | 300/288 | 298/290 | 0.91 c | 181/160 | 195/189 | 0.54 c | 26/24 | 26/24 | 23/27 | 0.79 c |
| SER (D) | −2.83 ± 1.11 | −2.68 ± 1.09 | 0.16 a | −2.46 ± 1.16 | −2.39 ± 1.05 | 0.57 a | −2.32 ± 0.86 | −3.56 ± 1.12 | −4.91 ± 0.72 | <0.01 b |
| AL (mm) | 24.87 ± 0.96 | 24.73 ± 0.94 | 0.14 a | 24.58 ± 1.00 | 24.49 ± 0.90 | 0.39 a | 23.92 ± 0.47 | 25.07 ± 0.43 | 26.49 ± 0.40 | <0.01 b |
Abbreviations: AL, axial length; M/F, male/female; SER, spherical equivalent refraction.
a
2‐sample t‐test.
b
One‐way ANOVA.
c
Chi‐square test.