Table 2. Timing of prophylactic antibiotic administration.

preop: preoperative; postop: postoperative

Variables	Frequency (%)
Preop antibiotics (minutes) (N=137)
0-14	27 (19.7)
15-29	53 (38.7)
30-44	37 (27.0)
45-60	18 (13.1)
>60	2 (1.5)
Mean±SD	26.7±12
Delay in postop dose administration (hours) (N=56)
<1	1 (1.8)
1-2	9 (16.1)
2-3	41 (73.2)
3-4	2 (3.6)
>4	3 (5.3)