Skip to main content
. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Br J Ophthalmol. 2014 Jun 25;98(11):1551–1554. doi: 10.1136/bjophthalmol-2013-304393

TABLE 3.

Pearson correlation values for Confocal scanning laser Doppler flowmetry in relation to Heidelberg Retinal Tomograph version III measurements of optic nerve head structure.

African descent European descent Correlation Comparison
Correlation (r-value) p-value Correlation (r-value) p-value p-value
Superior mean retinal flow C/D area ratio −0.78 0.0200 −0.19 0.2529 0.0052
Cup area −0.75 0.0283 −0.17 0.2876 0.0083
Rim area 0.74 0.0328 0.20 0.2086 0.0143
Inferior retinal flow C/D area ratio −0.88 0.0156 −0.06 0.6923 0.0000
Linear C/D ratio −0.86 0.0265 −0.05 0.7584 0.0001

C/D=cup/disc. Pearson correlations were calculated to evaluate the associations between the changes in measurements between baseline and 3 years. Repeated measures analysis of covariance was used to compare the baseline and 3-year measurements, testing the changes within race and testing for whether the changes were different between races.