Table 2.

Values (± standard error) describing the exponential decay equations for Integra^® and Strattice^® of the form y=a*(1−b)^x; “y” = nucleated cell count per layer; “a” = invasion coefficient reflecting the degree of invasion into the most external scaffold layer; “b” = rate of cell count decay between layers; “(1−b)”= the decay factor; “x” = layer number (1 through 4); “R²”= coefficient of determination representing the “goodness of fit.”

	Integra®				Strattice®
Day	a	1−b	b	R2	a	1−b	b	R2
3	32.6±0.3	0.72±0.11	0.28	0.81	17.6±1.2	0.24±0.43	0.76	0.84
7	115.7±0.1	0.43±0.03	0.57	1.00	118.1±0.6	0.31±0.21	0.69	0.94
14	80.5±0.3	0.61±0.12	0.39	0.90	90.7±0.3	0.43±0.11	0.57	0.97
Mean	76.3	0.59	0.41	-	75.5	0.33	0.67	-