Table 1. Throat swab culture results

	All beta-Lancefield group streptococci^a	Group A streptococci	Group C and G streptococci
Negative swab	Positive swab	P	Negative swab	Positive swab	P	Negative swab	Positive swab	P
n, %(n = 421)	n, %(n = 81)	n, %(n = 439)	n, %(n = 63)	n, %(n = 484)	n, %(n = 18)
Centor ≥3(n = 74)	55 (13%)	19 (24%)	0.01	59 (13%)	15 (24%)	0.03	77 (16%)	4 (22%)	0.33
FeverPAIN 2–3(n = 266)	192 (46%)	48 (60%)	0.02	205 (47%)	35 (56%)	0.16	253 (52%)	13 (72%)	0.03
FeverPAIN ≥4(n = 11)	8 (2%)	3 (3.7%)	0.15	9 (2%)	2 (3%)	0.42	10 (2%)	1 (6%)	0.09

↵a All beta-Lancefield group streptococci to include group A, C, and G streptococci strains isolated on agar plates after 48 hours culture.