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Table 5 Linear stepwise regression analysis of all data, 2008 to 2018 inclusive

From: Catquest-9SF functioning over a decade – a study from the Swedish National Cataract Register

Variable Unstandardized beta Standard Error Standardized beta Significance 95% CI, lower 95% CI, upper
BCVA in the better eye 3.399 0.053 0.320 0.000 3.294 3.503
Age −0.033 0.001 −0.138 0.000 −0.036 −0.031
Sex −0.406 0.019 −0.096 0.000 −0.444 −0.368
Surgery year −0.047 0.003 −0.066 0.000 −0.053 −0.040
Ocular comorbiditya 0.211 0.020 0.049 0.000 0.172 0.251
Surgical difficultyb 0.216 0.037 0.027 0.000 0.143 0.289
Second-eye surgery −0.109 0.021 −0.026 0.000 −0.149 −0.068
  1. Dependent variable: preoperative person Rasch score. Independent variables: preoperative BCVA (logMAR) in the better eye, age, sex (coded as female 0, male 1), surgery year, ocular co-morbidity (coded as yes 1, no 0), surgical difficulty (coded as yes 1, no 0) and second-eye surgery (coded as yes 1, no 0)
  2. BCVA = best corrected visual acuity; logMAR = logarithm of the minimum angle of resolution; 95% CI = 95% confidence interval
  3. aOcular comorbidity includes age-related macular degeneration, glaucoma, diabetic retinopathy, and “other” sight-threatening ocular comorbidity
  4. bSurgical difficulty includes small pupil with need of stretching, white or dense cataract with need of staining, need of capsular hooks and capsular tension ring