Experimental porcine model of complex fistula-in-ano

Table 1 Comparison of the general data between the two groups

	Number of animals	Number of fistulas	Male/female ratio	Average weight
Experimental group	6	18	3/3	39.3 ± 1.1
Control group	6	18	4/2	38.9 ± 1.2
χ2/t value			0.3429	0.6019
P value			0.5582	0.5606

Table 2 Comparison of the characteristics and outcome between the two groups

Group	Animals	No. of fistulas	Number of successful clinical models	MRI showing typical characteristics of complex fistulas	Pathological features showing fixed fistulas
Experimental group	6	18	15	13	11
Control group	6	18	5	4	3
χ2 value			9.1125	7.1331	7.4805
P value			0.0025	0.0076	0.0062