Table 4.

Unadjusted and adjusted generalised linear models of Visual Function Questionnaire-25 composite score regressed over per cent adherence and covariates at baseline (n=79)

Characteristics	Unadjusted estimate (95% CI)	Unadjusted effect size*	Unadjusted P value	Adjusted estimate (95% CI)	Adjusted effect size*	Adjusted P value
Percent adherence: ≥80% vs <80%	5.26 (0.48 to 10.04)	0.27	0.27	4.98 (0.20 to 9.76)	0.25	0.30
Visual field: mild vs severe/moderate	8.89 (3.97 to 13.81)	0.45	0.08	7.54 (2.68 to 12.40)	0.39	0.13
Visual field : uninterpretable† vs severe/moderate	12.26 (5.23 to 19.29)	0.63	0.09	15.22 (8.26 to 22.18)	0.78	0.03
Visual acuity <20/50 vs ≥20/50 in either eye	13.24 (8.37 to 18.11)	0.68	<0.01	11.77 (6.59 to 16.95)	0.60	0.03
Age (years)	0.01 (−0.23 to 0.25)	0.0	0.98
Gender: male vs female	1.75 (−7.34 to 10.85)	0.09	0.85
Race: white vs non-white	−1.04 (−5.61 to 3.52)	−0.05	0.82
REALM score	0.18 (0.48 to 10.04)	0.01	0.45

*Effect size was calculated by dividing the point estimate by the SD.

†Visual fields with >33% fixation losses, false-positives or false-negatives and/or with artefact such as a cloverleaf pattern or rim defect were labelled uninterpretable.

REALM, Rapid Estimate of Adult Literacy in Medicine.