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P-values for the individual Pearson correlation coefficients assessing the relation between spherical and bifocal contact lens centration (primary gaze) in the vertical meridian and age, gender, ethnicity (Asian versus non-Asian), and myopia (median split).
| Lens | Gaze | Age | Gender | Ethnicity | Myopia |
|---|---|---|---|---|---|
| Spherical | Primary | 0.39 | 0.68 | 0.45 | < 0.0001 |
| Spherical | Various | 0.82 | 0.28 | 0.75 | 0.62 |
| Bifocal | Primary | 0.42 | 0.55 | 0.61 | 0.43 |
| Bifocal | Various | 0.55 | 0.66 | 0.52 | 0.63 |
