Table 5 Association of ethnicity, age, gender, and education with cataract-related severe visual impairment or blindness (< 20/200) by univariate analysis
Variables | Post-operative presumed severely visually impaired or blind | Unoperated cataract severely visually impaired or blind | Cataract social burdon | Surgical coverage | ||||
|---|---|---|---|---|---|---|---|---|
Test statistics | P value | Test statistics | P value | Test statistics | P value | Test statistics | P value | |
Ethnicity | 3.536 | 0.171 | 25.306 | < 0.001 | 15.018 | < 0.001 | 13.365 | 0.001 |
Age(years) | 253,654 | < 0.001 | 351.527 | < 0.001 | 654.945 | < 0.001 | 10.159 | 0.002 |
Gender | 4.431 | 0.035 | 1.875 | 0.171 | 6.372 | 0.012 | 0.193 | 0.660 |
Education(years) | 68.404 | < 0.001 | 60.080 | < 0.001 | 131.436 | < 0.001 | 5.367 | 0.068 |