Table 1.
Item content of the Patient-Health Questionnaire-9.
Table 2.
Sociodemographic and clinical characteristics of 198 participants with glaucoma who completed the Patient Health Questionnaire-9.
Table 3.
Summary of the overall performance of the Patient-Health Questionnaire-9.
Table 4.
Item calibration (location) and fit statistics for the five items of the Patient Health Questionnaire.