Table 1.

Using antibiotic prophylaxis by surgeons in different operations

Tympanoplasty in dry (n=257) and wet (n=202) ears
Antibiotic Usage	Pre-operative		Intra-operative		Post-operative
	Dry	Wet	Dry	Wet	Dry	Wet
n (%)	19 (7.4)	176 (87.1)	105 (40.9)	95 (47.0)	227 (88.3)	198 (98.0)
Days	5.2±9.5(1-30, 2)a	10.6±5.8(1-42, 9.5)			7.0±3.0(1-28, 7)	7.5±3.0(1-20, 7)
Tympanomastoidectomy in dry (n=255) and wet (n=226) ears with no cholesteatoma
Antibiotic Usage	Pre-operative		Intra-operative		Post-operative
	Dry	Wet	Dry	Wet	Dry	Wet
n (%)	18 (7.1)	221 (97.8)	101 (39.6)	115 (50.9)	239 (93.7)	225 (99.6)
Days	8.3±8.6(1-30, 7)	10.3±5.4(1-42, 10)			7.6±4.0(1-47,7)	7.6±2.8(1-20, 7)
Tympanomastoidectomy in dry (n=242) and wet (n=231) ears with cholesteatoma
Antibiotic Usage	Pre-operative		Intra-operative		Post-operative
	Dry	Wet	Dry	Wet	Dry	Wet
n (%)	34 (14.0)	227 (98.3)	110 (45.4)	120 (51.9)	238 (98.3)	230 (99.6)
Days	9.3±6.9(1-30, 7)	9.8±5.3(1-30, 8.5)			8.1±4.0(1-47, 7)	8.2±3.2(1-28, 7)
Stapes or MEE surgeries (n=156)
Antibiotic Usage	Pre-operative		Intra-operative		Post-operative
n (%)	10 (6.4)		65 (41.7)		114 (73.1)
Days	2.75±2.9(1-7, 1.5)				6.9±4.1(1-30, 7)