Table 1.

Values of the correlation coefficients (r²) and drug release rate constant (k) obtained by fitting ibuprofen or fenofibrate release data from NE₁ and NE₂ with zero-order, first-order and square of time release mathematical models.

		Zero Order		First Order		√t
		r2	k (mgh−1)	r2	k (h−1)	r2	k (mgh−1/2)
Ibuprofen	NE1	0.9539	0.823	0.7157	1.286	0.9105	1.198
	NE2	0.9017	0.980	0.8098	0.661	0.9868	1.530
Fenofibrate	NE1	0.9304	0.021	0.608	0.058	0.9917	0.158
	NE2	0.9112	0.022	0.7632	0.069	0.9991	0.124