Table 2.

Demographics presentation, and previous exposure to antibiotic drops of S. aureus acute otitis externa infections. Nine out of 11 patients with MRSA exposed to otic drops were exposed to quinolone drops.**Significantly different from MRSA.

Group	Average age (y)	Sex	Average number of comorbidities	Average time to resolution of symptoms (days)	Previous exposure to otic drops
MRSA	46.7 (13–68; 1 pedi patient)	54% M; 46% F	4 (0–12)	21.5 (3–42; data available for n = 6)	11 (73%)
MSSA	29.0 (5–74; 13 pedi patients, P < 0.01)**	36% M; 64% F	1.7 (0–6, P < 0.01)**	11.2 (1–42)	14 (37%, P = 0.019)**
P. aeruginosa	31.2 (1–90; 28 pedi patients, P = 0.014)**	46.6% M; 53.4% F	1 (0–2, P < 0.01)**	15 (2–56, P = 0.04)**	35 (48%)