Table 3.

Bivariate analysis of preincision antibiotic prophylaxis, adjunctive azithromycin for unscheduled cesarean delivery, and 3 g cefazolin in morbidly obese women.

Characteristic	Preincision prophylaxis (%)	P value	Azithromycin use in intrapartum cesarean delivery (%)	P value	3 g cefazolin in morbidly obese women (%)	P value
Administration frequency of obstetric anesthesia		<0.0001		0.2286		0.6520
Very rarely (only a few times a year)	15/20 (75.0%)		1/20 (5.0%)		10/20 (50.0%)
Rarely (less than once a month)	31/38 (81.6%)		3/38 (7.9%)		13/38 (34.2%)
Occasionally (a few times a month)	453/475 (95.4%)		46/475 (9.7%)		202/475 (42.5%)
Very often (several times a week)	663/690 (96.1%)		91/690 (13.2%)		284/690 (41.2%)
Region in the United States		<0.0001		<0.0001		<0.0001
Northeast	240/248 (96.8%)		27/248 (10.9%)		97/248 (39.1%)
Southeast	219/233 (94.0%)		20/233 (8.6%)		86/233 (36.9%)
Midwest	238/245 (97.1%)		41/245 (16.7%)		123/244 (50.4%)
Southwest	116/118 (98.3%)		18/118 (15.3%)		57/118 (48.3%)
West	235/241 (97.5%)		32/241 (13.3%)		117/241 (48.6%)
Other	114/138 (82.6%)		3/138 (2.2%)		29/138 (21.0%)
Years in practice		0.0025		<0.0001		<0.0001
Currently training	4/4 (100.0%)		2/4 (50.0%)		3/4 (75.0%)
<5 years	106/107 (99.1%)		26/107 (24.3%)		68/107 (63.6%)
5–15 years	450/464 (97.0%)		68/464 (14.7%)		217/464 (46.8%)
More than 15 years	601/647 (92.9%)		45/647 (7.0%)		221/647 (34.2%)
Institutional annual number of cesarean deliveries		0.0043		<0.0001		0.0041
<100	70/81 (86.4%)		2/81 (2.5%)		24/81 (29.6%)
100–500	499/523 (95.4%)		45/523 (8.6%)		202/523 (38.6%)
>500	593/619 (95.8%)		94/619 (15.2%)		283/619 (45.7%)