Table 4.

Effectiveness of the initially selected antibiotics in each group

	Gram stain	Guidelines	p value
Effective	186 (89.4 %)	191 (91.8 %)	0.2071
Not effective	14 (6.7 %)	10 (4.8 %)	0.1999
Unknown	8 (3.8 %)	7 (3.3 %)	0.6865