Skip to main content
. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Ophthalmology. 2013 Nov 26;121(2):459–468. doi: 10.1016/j.ophtha.2013.09.013

Table 8.

Linear regression analysis results of Ocular Response Analyzer variables as a function of cornea-compensated intraocular pressure (IOPcc), central corneal thickness (CCT) and maximum corneal curvature (Kmax).

IOPcc CCT MaxK
Variable R2 (+/−)* p value R2(+/−) p value R2 (+/−) p value
A1 0.12(+) 0.0004 0.25(+) <0.0001 0.15(−) <0.0001
A2 0.05(+) 0.02 0.1(+) 0.001 0.11(−) 0.0004
ApplanationPeakDiff 0.01(+) 0.3 0.13(+) 0.0001 0.05(−) 0.028
ConcavityMin 0.08 (+) 0.003 0.42(+) <0.0001 0.24(−) <0.0001
ConcavityMean 0.13 (+) 0.0002 0.37(+) <0.0001 0.22(−) <0.0001
P1P2Avg 0.44(+) <0.0001 0.35(+) <0.0001 0.26(−) <0.0001
Pmax 0.11 (+) 0.0007 0.3(+) <0.0001 0.26(−) <0.0001
ConcavityDuration 0.43(−) <0.0001 0.12(−) 0.0003 0.09(+) 0.002
ConcavityTime 0.02(−) 0.2 0.03(+) 0.08 0.05(−) 0.03
LagTime 0.11(−) 0.0007 0.002(−) 0.7 0.00008(−) 0.928
ApplanationOnsetTime 0.31(+) <0.0001 0.38(+) <0.0001 0.29(−) <0.0001
SlopeUp 0.05(+) 0.02 0.11(+) 0.0004 0.11(−) 0.0006
SlopeDown 0.004(+) 0.5 0.02(+) 0.2 0.09(−) 0.002
Impulse 0.09(+) 0.002 0.28(+) <0.0001 0.25(−) <0.0001
CH 0.003(−) 0.6 0.26(+) <0.0001 0.1(−) 0.001
CRF 0.05(+) 0.03 0.39(+) <0.0001 0.25(−) <0.0001
HLA 0.16(+) <0.0001 0.45(+) <0.0001 0.35(−) <0.0001
HLAc 0.09(+) 0.002 0.43(+) <0.0001 0.35(−) <0.0001

P values < 0.05 indicate a slope term significantly different than zero.

*

”+/−“ indicates directionality of the linear relationship.