Table V.

Coefficients of Determination from Linear Regression Analyses Using Various Mathematical Models

Ingredient levels (% w/w)	Zero-order Q t = K 0 t + Q 0	First-order Log Q t = k1t + log Q 0	Higuchi Q t = K H t 1/2
Glyceryl behenate
50 (F1)	0.9039	0.6323	0.9864
55 (F2a)	0.9061	0.6391	0.9872
60 (F3)	0.9408	0.6717	0.9958
65 (F4)	0.9455	0.7090	0.9960
Sodium starch glycolate
0.0 (F5)	0.8561	0.5456	0.9642
0.8 (F6a)	0.9061	0.6391	0.9872
1.6 (F7)	0.9100	0.6531	0.9878
3.2 (F8)	0.7314	0.5130	0.8834

^aFormulations F2 and F6 are identical