Explicit criteria for prioritization of cataract surgery

Table 3 Contribution of the variables to the priority score

	General linear model				Logistic regression
Variable	R ²	Difference	P value	Variable	-2 log L	Difference	P value
					924.040
Visual acuity in cataractous eye	0.136		<0.001	Visual function	824.363	99.677	<0.001
Expected visual acuity	0.390	0.254	<0.001	Visual acuity in cataractous eye	806.617	17.746	<0.001
Visual function	0.777	0.387	<0.001	Expected visual acuity	770.361	36.256	0.011
Contralateral visual acuity	0.824	0.047	<0.001	Contralateral visual acuity	766.778	3.583	0.250
Ocular comorbidities	0.872	0.048	<0.001	Ocular comorbidities	764.305	2.473	0.596
Social dependence	0.881	0.009	<0.001	Social dependence	762.447	1.858	0.160
Laterality	0.882	0.001	0.001	Laterality	762.418	0.029	0.843
Appropriateness	0.947	0.065	<0.001	Appropriateness	756.008	6.410	0.007

R², R square. Difference, difference in R square after the introduction of a new variable.

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