TABLE 3.

DEMOGRAPHIC, SOCIOECONOMIC, AND MEDICAL CHARACTERISTICS OF ALL PARTICIPANTS, THE ADHERENT GROUP,* AND THE NONADHERENT GROUP AT THE ENROLLMENT VISIT IN THE OBSERVATIONAL CASE SERIES STUDY. GLAUCOMA TREATMENT COMPLIANCE ASSESSMENT TOOL STUDY

VARIABLE†	ALL PARTICIPANTS (N=58)	ADHERENT GROUP (N=28)	NONADHERENT GROUP‡ (N=29)	P§
Age, years	65.2 ± 14.9	69.4 ± 13.1	61.6 ± 15.6	.05
Female, %	56.9	57.1	55.2	.88
White primary ethnicity¶, %	79.3	89.3	69.0	.06
Some college or more, %	75.9	78.6	72.4	.59
Medication cost out-of-pocket per year, $	601 ± 818	741 ± 933	488 ± 702	.30
Intraocular pressure (right eye), mm Hg	16.1 ± 5.5	15.1 ± 4.8	17.0 ± 6.0	.20
Intraocular pressure (left eye), mm Hg	16.4 ± 4.6	15.5 ± 3.1	17.2 ± 5.6	.17
Number of eye drops per day	3.3 ± 2.1	3.2 ± 1.5	3.4 ± 2.6	.77
Visual field mean deviation in better eye, dB	−3.5 ± 6.0	−4.0 ± 5.8	−3.6 ± 5.5	.78
Visual field mean deviation in worse eye, dB	−8.3 ± 8.7	−8.0 ± 7.1	−9.7 ± 9.5	.46

^*Adherent persons were those that had 90% or more days in which any drop was taken within 6 hours of the designated time.

^†Two (n=2) participants in the adherent group did not know whether they had insurance coverage for medication; 10 participants (5 from the adherent group and 5 from the nonadherent group) did not know their medication cost out-of-pocket; and 1 person in the nonadherent group did not have intraocular pressure evaluated at the enrollment visit.

^‡We excluded one participant from the nonadherent group, and the analysis comparing the nonadherent group to the adherent group, because of a malfunction of the Travatan Dosing Aid (Alcon, Fort Worth, Texas).

^§Comparison of the adherent and nonadherent groups using an independent-samples t test or chi-square test as applicable.

^¶Ethnicity included white (n=46), African American (n=6), Asian (n=4), Hispanic/Latino (n=1), and other (n=1).