. Author manuscript; available in PMC: 2010 Nov 30.

Published in final edited form as: J Biomed Opt. 2008 Sep–Oct;13(5):050504. doi: 10.1117/1.2981813

Table 1.

Effect of ¹O₂ signal on photobiological responses based on a linear mixed model regression analysis of the data. Slope of the linear correlation between ¹O₂ signal and photobiological response in either I_short sites, I_long sites, or the combined data are reported. Edema is measured at post-PDT; erythema is measured at follow-up. The slope test shows the comparison of slopes estimated from I_short sites and I_long sites using an F-test. ST is statistically significant. CI=confidence interval.

¹O₂ signal	Edema⁺		Erythema^×
¹O₂ signal	Slope (95% CI)	P value	Slope (95% CI)	P value
Slope test^†		0.009 (ST)		0.527
I_short sites only	−0.002 (−0.015, 0.011)	0.747
I_long sites only	0.035 (0.011, 0.059)	0.010 (ST)
Combined sites			0.017 (0.002, 0.031)	0.028 (ST)