Association between preoperative visual acuity and sociodemographic characteristics as shown in a linear regression model
| B | SE B | p Value | |
|---|---|---|---|
| Constant | 0.80 | 0.13 | <0.001 |
| Dummy variables for site | |||
| Site 1 | 0.18 | 0.04 | <0.001 |
| Site 2 | 0.13 | 0.03 | <0.001 |
| Site 3 | 0.52 | 0.04 | <0.001 |
| General health status | 0.003 | 0.001 | 0.01 |
| Age (years) | −0.003 | 0.002 | 0.09 |
| Working outside home (no/yes) | −0.02 | 0.03 | 0.52 |
| Living alone (no/yes) | 0.02 | 0.03 | 0.47 |
| Sex (male/female) | 0.004 | 0.026 | 0.88 |
↵SIP score, ranging from 0 (indicating absence of dysfunction) to 100 (indicating the maximum level of dysfunction).