Development of appropriateness explicit criteria for cataract extraction by phacoemulsification

Table 4 Contribution of variables to the appropriateness scoring, by chapter.

Variable by Category	Lineal Regression			Logistic Regression
	R²	Difference	P Value	-2 log L	Difference	P Value
Simple Cataract				210.63
Visual Acuity	0.491	-	<0.001	160.99	49.64	<0.001
Visual Function	0.788	0.297	<0.001	117.08	43.91	<0.001
Surgery Complexity	0.901	0.113	<0.001	96.41	20.67	0.0003
Type of Cataract	0.902	0.001	0.23	94.60	1.81	0.185
Contralateral Visual Acuity	0.902	0	0.61	88.36	6.24	0.06
Cataract with Diabetic Retinopathy				372.48
Visual Function	0.335	-	<0.001	321.29	51.19	<0.001
Expected Visual Acuity	0.487	0.152	<0.001	263.31	57.98	0.006
Visual Acuity	0.887	0.4	<0.001	112.94	150.37	<0.001
Surgery Complexity	0.913	0.026	<0.001	92.65	20.29	0.005
Contralateral Visual Acuity	0.916	0.003	0.006	83.08	9.57	0.02
Laterality of Cataract	0.916	0	0.49	83.02	0.06	0.8
Cataract with Other Pathologies				345.24
Visual Function	0.397	-	<0.001	260.89	84.35	<0.001
Anticipated Visual Acuity	0.554	0.157	<0.001	212.11	48.78	0.03
Visual Acuity	0.899	0.345	<0.001	79.60	132.51	<0.001
Surgery Complexity	0.913	0.014	<0.001	45.12	34.48	0.004
Contralateral Visual Acuity	0.914	0.001	0.1	43.84	1.28	0.55
Laterality of Cataract	0.914	0	0.65	41.85	1.99	0.17

R²: R Square. Difference: difference in R square after the introduction of the new variable

ISSN: 1472-6963