Gram Staining for the Treatment of Peritonsillar Abscess

Table 3

Clinical usefulness of Gram staining.

	Gram-positive cocci	Gram-positive rods	Gram-negative cocci	Gram-negative rods
Sensitivity (%)	90	100	0	64
Specificity (%)	62	69	100	76
Positive predictive value (%)	68	19	0	82
Negative predictive value (%)	88	100	98	57