Table 4

Results of the analysis of covariance: outcomes at 2 years by group using a best eye/worst eye analysis (n=346)

Hospital
(mean)
Community (mean) Difference between
means (95% CI)
p Value
Better eye:
Number of points missed on visual field testing7.96.80.07 (−1.86 to 2.01)0.94
Intraocular pressure (mm Hg)19.319.30.26 (−1.21to 0.68)0.59
Cup disc ratio0.720.720.00 (−0.02 to 0.03)0.70
Worse eye:
Number of points missed on visual field testing 20.218.30.04 (−3.49 to 3.40)0.98
Intraocular pressure (mm Hg)19.119.00.53 (−1.58 to 0.51)0.32
Cup disc ratio 0.740.740.00 (−0.03 to 0.02)0.78
  • Differences are from the analysis of covariance and are adjusted for baseline visual field measurements