Evaluation of Reliability and Validity of Three Common Dry Eye Questionnaires in Chinese

Table 3

Structural validity analysis of Ocular Surface Disease Index.

Dimension	Question number	Common factor 1	Common factor 2	Common factor 3	Common factor 4
1	1	0.664	−0.011	0.233	0.418
1	2	0.677	0.199	0.069	0.289
1	3	−0.045	0.040	−0.050	−0.855
2	4	−0.211	0.194	0.755	0.174
2	5	0.193	0.072	0.829	−0.147
2	6	−0.024	0.882	0.159	0.008
2	7	0.066	0.688	0.271	0.076
2	8	0.539	0.481	−0.247	−0.466
2	9	0.112	0.860	−0.075	−0.042
3	10	0.786	−0.105	0.059	−0.066
3	11	0.851	0.138	−0.118	−0.261
3	12	0.906	0.083	−0.114	−0.172