Table 4 Results of the univariate association analysis (under stratification for centres by means of the Mantel / Haenszel method) between putative external factors and two outcome indicators (refractive accuracy and visual rehabilitation) 2 – 5 weeks after cataract surgery, based on the combined data of three outpatient centres: Odds ratios (OR) and local 99% confidence intervals (CI)
“Refractive accuracy” │SE – TR │ ≤ 0.5 dpt | “Visual rehabilitation” visual acuity cc ≥ 1.0 | |||
|---|---|---|---|---|
OR | 99% CI | OR | 99% CI | |
Sociodemographic external factors | ||||
Age ≥ 80 versus age < 80 | 0.885 | 0.772–1.040 | 0.484 | 0.414–0.564 |
Female gender versus male gender | 1.127 | 0.986–1.276 | 0.870 | 0.767–0.979 |
Quantitatively documented external factors | ||||
Baseline visual acuity cc ≤ 0.1 versus > 0.1 | 0.613 | 0.492–0.777 | 0.556 | 0.443–0.688 |
Severe nearsightedness (myopia; axial eye length ≥ 25 mm) versus normal eye length (22.01 – 24.9 mm) | 0.613 | 0.486–0.744 | 0.993 | 0.805–1.209 |
Severe farsightedness (hyperopia, axial eye length ≤ 22 mm) versus normal eye length (22.01 – 24.9 mm) | 0.737 | 0.587–0.919 | 0.541 | 0.434–0.672 |
Qualitatively documented external factors | ||||
Presence versus absence of at least one pre-existing condition (potentially) reducing visual acuity | 0.915 | 0.804–1.047 | 0.508 | 0.442–0.571 |
Presence versus absence of at least one known previous ocular surgery | 0.855 | 0.60–1.244 | 0.393 | 0.253–0.561 |
Presence versus absence of at least one surgically relevant ocular risk factor | 0.773 | 0.675–0.888 | 0.732 | 0.632–0.840 |