Table 2.

Results of statistical analysis results for all response.

Source	R1		R2
	F-Value	p-Value	F-Value	p-Value
Model	67.64	<0.0001 *	35.53	<0.0001 *
X1	520.34	<0.0001 *	272.19	<0.0001 *
X2	3.78	0.0928	0.0850	0.7790
X3	52.31	0.0002 *	31.90	0.0008 *
X1X2	4.03	0.0848	0.1206	0.7386
X2X3	5.87	0.0459 *	0.5130	0.4970
X3X1	1.48	0.2638	1.13	0.3229
X12	20.80	0.0026 *	10.11	0.0155 *
X22	0.0027	0.9600	0.8254	0.3938
X32	0.4326	0.5317	1.89	0.2112
Lack of Fit	2.18	0.2333	2.20	0.2304
R2 analysis
R²	0.9886		0.9786
Adjusted R²	0.9740		0.9510
Predicted R2	0.8805		0.7739
Adequate Precision	27.6989		20.4175
Model
Remark	Quadratic		Quadratic

X₁: oil concentration; X₂: surfactant concentration; X₃: gelling agent concentration; R₁: viscosity; R₂: in vitro release; *: significant.