Table 2.

Results of curve fitting of the in vitro skin permeation data of various ondansetron HCl microemulsions.

Codes	Correlation coefficient (R 2)				Diffusion coefficient (n)
	Zero-order	First-order	Higuchi	Korsmeyer-Peppas
F-1	0.472	0.967	0.996	0.998	0.529
F-2	0.527	0.889	0.982	0.984	0.574
F-3	0.481	0.863	0.968	0.971	0.587
F-4	0.515	0.885	0.981	0.984	0.574
F-5	0.535	0.897	0.983	0.987	0.602
F-6	0.571	0.921	0.991	0.985	0.587
F-7	0.631	0.949	0.991	0.994	0.554
F-8	0.673	0.946	0.985	0.992	0.579