Table 3. Differences in GCC and RNFL parameters between boys and girls.
| Variables | Mean ± SD | Boys (n=1,452) | Girls (n=1,053) | t | P |
|---|---|---|---|---|---|
| Average GCC (µm) | 95.31±7.67 | 95.46±8.25 | 95.11±6.80 | 1.09 | 0.2738 |
| Superior GCC (µm) | 95.36±8.07 | 95.47±8.59 | 95.22±7.31 | 0.74 | 0.4569 |
| Inferior GCC (µm) | 95.27±7.96 | 95.43±8.59 | 95.05±7.01 | 1.13 | 0.2569 |
| S-I GCC (µm) | 0.10±4.59 | 0.04±4.87 | 0.17±4.18 | −0.66 | 0.5103 |
| GLV (%) | 2.03±2.41 | 1.98±2.43 | 2.11±2.39 | −1.35 | 0.1762 |
| FLV (%) | 1.24±1.47 | 1.16±1.42 | 1.36±1.54 | −3.40 | 0.0007 |
| Average RNFL | 102.04±8.26 | 102.07±8.57 | 102.00±7.85 | 0.20 | 0.8442 |
| Superior half | 104.34±9.41 | 104.59±9.66 | 104.02±9.06 | 1.31 | 0.1903 |
| Inferior half | 99.74±9.33 | 99.55±9.70 | 99.97±8.82 | −0.97 | 0.3321 |
| Temporal quadrant | 301.97±153.03 | 302.48±156.47 | 301.27±148.26 | 0.19 | 0.8470 |
| Superior quadrant | 300.79±152.86 | 301.21±156.34 | 300.20±148.01 | 0.16 | 0.8713 |
| Nasal quadrant | 289.41±153.35 | 290.16±156.92 | 288.39±148.39 | 0.28 | 0.7789 |
| TU | 86.08±12.30 | 85.80±13.01 | 86.44±11.33 | −1.12 | 0.2649 |
| ST | 140.33±17.48 | 140.85±17.75 | 139.67±17.11 | 1.45 | 0.1463 |
| SN | 109.73±15.80 | 110.20±16.28 | 109.14±15.15 | 1.45 | 0.1478 |
| NU | 81.20±14.80 | 81.49±15.09 | 80.83±14.41 | 0.97 | 0.3329 |
| NL | 70.93±15.02 | 71.21±15.59 | 70.58±14.25 | 0.90 | 0.3688 |
| IN | 113.35±18.39 | 113.02±18.60 | 113.78±18.13 | −0.89 | 0.3722 |
| IT | 140.22±18.52 | 139.24±19.01 | 141.48±17.82 | −2.61 | 0.0092 |
| TL | 74.43±11.17 | 74.73±11.90 | 74.05±10.15 | 1.32 | 0.1883 |
| TU1 | 70.97±10.37 | 71.12±11.18 | 70.78±9.22 | 0.70 | 0.4852 |
| TU2 | 101.18±16.05 | 100.47±16.65 | 102.08±15.21 | −2.16 | 0.0308 |
| ST1 | 141.77±21.12 | 143.36±21.31 | 139.73±20.70 | 3.71 | 0.0002 |
| ST2 | 138.89±21.35 | 138.34±21.99 | 139.61±20.50 | −1.28 | 0.2006 |
| SN1 | 113.10±19.18 | 113.95±19.59 | 112.01±18.59 | 2.18 | 0.0297 |
| SN2 | 106.37±15.46 | 106.45±16.00 | 106.26±14.74 | 0.26 | 0.7936 |
| NU1 | 71.89±16.00 | 72.34±16.51 | 71.31±15.30 | 1.38 | 0.1665 |
| NU2 | 90.51±15.52 | 90.64±15.89 | 90.34±15.04 | 0.42 | 0.6740 |
| NL1 | 64.78±15.77 | 65.13±16.55 | 64.32±14.70 | 1.11 | 0.2662 |
| NL2 | 77.09±16.30 | 77.28±17.03 | 76.84±15.32 | 0.58 | 0.5619 |
| IN1 | 124.09±22.66 | 123.48±22.90 | 124.86±22.35 | −1.31 | 0.1918 |
| IN2 | 102.62±17.07 | 102.55±17.65 | 102.70±16.30 | −0.19 | 0.8489 |
| IT1 | 146.61±21.88 | 145.65±22.63 | 147.85±20.83 | −2.17 | 0.0305 |
| IT2 | 133.82±21.28 | 132.83±21.33 | 135.11±21.16 | −2.31 | 0.0210 |
| TL1 | 62.65±9.72 | 63.09±10.75 | 62.08±8.17 | 2.24 | 0.0253 |
| TL2 | 86.21±14.77 | 86.36±15.12 | 86.01±14.30 | 0.52 | 0.6053 |
GCC, ganglion cell complex; RNFL, retinal nerve fiber layer; S-I, superior-inferior; GLV, global loss volume; FLV, focal loss volume; S, superior; N, nasal; U, upper; L, lower; I, inferior; T, temporal.