Table 2 Results of simple correlation and multiple regression analysis to estimate the association between C0 choroidal thickness and environmental factors.
From: Thicker peripapillary choroid may be associated with behavioral factors in Tokyo’s children
Variable | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
Correlation coefficient | P value | Coefficient | P value | |
Sex (boys = 1, girls = 0) | 0.083 | 0.371 | ||
Height, cm | 0.087 | 0.348 | ||
Axial length, mm | 0.330 | < 0.001 | -23.958 | < 0.001 |
Time spent | ||||
In outdoor activities, min/day | 0.039 | 0.674 | ||
Using smartphone/tablet/ handheld game device, min/day | 0.082 | 0.375 | ||
Using computers, min/day | 0.216 | 0.023 | − 0.728 | 0.028 |
Reading/studying, min/day | 0.067 | 0.468 | ||
Reading distance, cm | 0.045 | 0.631 | ||
No. of parents with myopia | ||||
0 | 0.090 | 0.343 | ||
1 | 0.014 | 0.884 | ||
2 | 0.055 | 0.565 | ||
