Table 6.

Relationship between Surgical site infecion and the secure use of the antibiotic prophylaxis

A.
			Antibiotic prophylaxis security
			Secure	Insecure
Surgical site Infection	Yes	Recount	11	9
		% in the Antibiotic prophylaxis security	11,0 %	29,0 %
		Revised residues	−2,4	2,4
	No	Recount	89	22
		% in the Antibiotic prophylaxis security	89,0 %	71,0 %
		Revised residues	2,4	−2,4
B. Chi-square Pearson test and Fisher’s exact stadistical test
	Value	gl	Sig. Asymptotic (bilateral)	Sig. Exact (bilateral)	Sig. Exact (Unilateral)
Pearson chi-square	5.948	1	.015
Fisher’s exact statistical test				.022	.019
Number of valid cases	134

(When it use the antibiotic prophylaxis security correctment, the surgical site infection decrease to stadistical significative way)