Table 1.
Characteristics of the study population of 42 healthy university students
| All subjects | Men | Women | P-Value* | |
|---|---|---|---|---|
| Number | 42 | 12 (29%) | 30 (71%) | |
| Age, years | 25.0 ± 2.0 (21–30) |
25.3 ± 2.2 | 24.8 ± 1.9 | 0.47 |
| Systolic blood pressure, mmHg | 124 ± 13.5 (95 to 154) |
132 ± 15.4 | 121 ± 11.2 | 0.0094 |
| Diastolic blood pressure, mmHg | 77 ± 11.5 (52–104) |
77 ± 12.2 | 78 ± 11.4 | 0.59 |
| Choroidal thickness, μm | 348 ± 104 (153–534) |
380 ± 93 | 336 ± 107 | 0.22 |
| Axial length, mm | 24.0 ± 1.1 (21.2–27.3) |
24.1 ± 0.87 | 24.0 ± 1.3 | 0.67 |
| Spherical equivalent refraction, D | −0.56 ± 2.5 (−11.3 to 3.63) |
0.0 ± 0.81 | −1.25 ± 4.0 | 0.14 |
| Time to rod intercept, min | 7.3 ± 0.94 (5.1–10) |
7.3 ± 1.3 | 7.4 ± 0.80 | 0.88 |
| Rod adaptation rate, log /min | 0.34 ± 0.055 (0.22–0.46) |
0.36 ± 0.058 | 0.33 ± 0.053 | 0.098 |
Data presented as mean ± standard deviation (range) or fraction (%) except refraction that is presented as median (interquartile range) because of a skewed distribution
Choroidal thickness was measured 2.5° above the fovea
* Two-tailed Student’s unpaired t-test or in case of refraction two-tailed Mann Whitney rank sum test