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

Published in final edited form as: Am J Ophthalmol. 2009 May 9;148(2):249–255.e1. doi: 10.1016/j.ajo.2009.03.002

TABLE 3.

Results from Linear Regression Analysis of Scans Obtained on the Same Visit and of Scans Obtained at Separate Visits

	Same Visit		Separate Visits
	β	SE β	β	SE β
Difference in signal strength^a	1.98	0.39	2.88	0.80
Difference in nasal minus temporal RNFL thickness^b	0.09	0.02	0.15	0.03
Difference in superior minus inferior RNFL thickness	0.02	0.02	−0.05	0.04

β = unstandardized β coefficient; RNFL = retinal nerve fiber layer; SE β = standard error β.

Same visit: R² = 0.21; F = 26.4; P < .05; separate visits: R² = 0.22; F = 12.3; P < .05.

Same visit: R² = 0.11; F = 11.9; P < .05; separate visits: R² = 0.27; F = 16.6; P < .05.