Table 1.

Baseline patient characteristics.

Patient characteristics	Number/mean (range)
Age (years)	67 (24–91)
Sex
Male	51
Female	49
Total body weight (kg)	76 (48–123)
BMI (kg/m2)
< 30	71
30–35	24
> 35	5
CrCl (mL/min/1.73 m2)
> 60	81
30–60	8
< 30	1
Total cefazolin dose (mg)
2000	96
3000	1
4000	3
Time from injection to incision (h)	0.85 (0.18–2.23)
Surgery duration (h)	1.16 (0.49–2.48)

BMI Body mass index, CrCl Creatinine clearance according to the CKD-EPI formula.