. 2014 May 9;9(5):e96477. doi: 10.1371/journal.pone.0096477

Table 3. Linear regression analysis show association between perfused boundary region and microvascular perfusion parameters.

Independent variable^*	Regression coefficient β	R-Square	95% CI for coefficient β^†
			Lower Bound	Upper Bound
RBC filling percentage	−0.034	0.475	−0.037	−0.031
+Age, sex, BMI^‡	−0.034	0.482	−0.036	−0.031
Valid microvascular density^§	−0.054	0.02	−0.083	−0.025
+Age, sex, BMI^‡	−0.059	0.06	−0.087	−0.030

*Dependent variable: Perfused boundary region (PBR).

^†

95% confidence interval for regression coefficient β.

^‡

Linear regression analysis adjusted for age, sex and BMI.

^§

Valid microvascular density expressed as millimeter of microvessel length per mm² of area of tissue (mm/mm²) for linear regression analysis due to difference in scale from PBR.