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

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

Variable	Unstandardized beta	Standard Error	Standardized beta	95% CI, lower	95% CI, upper
BCVA in the better eye	3.399	0.053	0.320	3.294	3.503
Age	−0.033	0.001	−0.138	−0.036	−0.031
Sex	−0.406	0.019	−0.096	−0.444	−0.368
Surgery year	−0.047	0.003	−0.066	−0.053	−0.040
Ocular comorbidity^a	0.211	0.020	0.049	0.172	0.251
Surgical difficulty^b	0.216	0.037	0.027	0.143	0.289
Second-eye surgery	−0.109	0.021	−0.026	−0.149	−0.068

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)
BCVA = best corrected visual acuity; logMAR = logarithm of the minimum angle of resolution; 95% CI = 95% confidence interval
^aOcular comorbidity includes age-related macular degeneration, glaucoma, diabetic retinopathy, and “other” sight-threatening ocular comorbidity
^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

ISSN: 2326-0254