. Author manuscript; available in PMC: 2010 Jun 1.

Published in final edited form as: Ophthalmology. 2009 Apr 19;116(6):1119–1124. doi: 10.1016/j.ophtha.2009.01.004

Table 6.

The absolute and normalized slope for optic nerve head parameters over ages, with absolute slope 95% confidence interval and p value.

	Absolute Slope (units/yr)	Confidence Interval	p value^*	Normalized Slope
Disc area (mm²)	-0.0008	-0.0049 - 0.0032	0.69	-0.0004
Rim area (mm²)	-0.0092	-0.0131 - -0.0052	<0.001	-0.0052
Cup area (mm²)	0.0085	0.0050 - 0.0121	<0.001	0.0174
Cup/disc area ratio	0.0039	-0.0003 - 0.0081	0.07	0.0183
Vertical cup/disc ratio	0.0037	-0.0015 - 0.0088	0.17	0.0090
Horizontal cup/disc ratio	0.0047	-0.0010 - 0.0105	0.11	0.0104
Vertical integrated rim area	-0.0077	-0.0113 - -0.0040	<0.001	-0.0082
Horizontal integrated rim width	-0.0039	-0.0117 - -0.0039	0.33	-0.0021
Cup area topo	0.0080	-0.0008 - 0.0168	0.08	0.0200
Cup volume topo	0.0058	0.0009 - 0.0106	0.02	0.0900

P value for an absolute slope difference from a zero slope.