Table 1 Biometric measurements of study subjects
From: The effect of orthokeratology treatment zone decentration on myopia progression
Variables mean ± SD, n (%) | All n= 217 | Mildly n = 65 | Moderately n = 114 | Severely n = 38 | P-valuea |
|---|---|---|---|---|---|
Age (years) | 12.43 ± 1.73 | 12.49 ± 1.75 | 12.45 ± 1.58 | 12.26 ± 2.10 | 0.621 |
Gender (male) | 102 (47) | 31 (48) | 56 (49) | 15 (40) | 0.582 |
SER | -3.10 ± 1.20 | -2.95 ± 1.30 | -3.10 ± 1.20 | -3.30 ± 1.04 | 0.328 |
SRE | -3.0 ± 1.12 | -2.86 ± 1.16 | -3.01 ± 1.12 | -3.19 ± 1.04 | 0.285 |
RA | 90 (41) | 28 (43) | 48 (42) | 15 (39) | 0.937 |
Baseline AL | 24.81 ± 0.83 | 24.75 ± 0.90 | 24.80 ± 0.80 | 24.97 ± 0.77 | 0.417 |
Flat K | 42.70 ± 1.28 | 42.81 ± 1.49 | 42.69 ± 1.19 | 42.51 ± 1.18 | 0.530 |
Steep K | 43.66 ± 1.39 | 43.74 ± 1.56 | 43.68 ± 1.33 | 43.45 ± 1.33 | 0.660 |
DD, mm | 0.69 ± 0.32 | 0.35 ± 0.11 | 0.71 ± 0.13 | 1.21 ± 0.22 | <0.001 |
DA | 192.43 ± 74.33 | 189.89 ± 76.90 | 188.03 ± 74.17 | 209.94 ± 69.58 | 0.111 |
Flat E | 0.59 ± 0.14 | 0.61 ± 0.12 | 0.59 ± 0.15 | 0.56 ± 0.15 | 0.324 |