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. 2015 Jan 27;59(2):831–837. doi: 10.1128/AAC.03949-14

TABLE 3.

Characteristics of patients according to type of antibiotic prophylaxisa

Characteristic Result for the following group:
P valueb
C group (n = 995) CT group (n = 791)
Median (IQR) age (yr) 71 (64–77) 72 (64–78) 0.236
No. (%) of patients by gender
    Female 669 (67.2) 525 (66.4) 0.700
    Male 326 (32.8) 266 (33.6)
Median (IQR) BMI (kg/m2) 29.9 (26.8–33.3) 29.3 (26.4–32.3) 0.003
No. (%) of patients with preoperative ASA classification of III or higher 185 (18.6) 155 (19.6) 0.590
No. (%) of patients with the following comorbidity:
    Hypertension 424 (42.6) 432 (54.6) <0.001
    Diabetes mellitus 131 (13.2) 98 (12.4) 0.626
    Malignancy 64 (6.4) 53 (6.7) 0.820
    Liver disease 21 (2.1) 14 (1.8) 0.606
    Lung disease 96 (9.6) 70 (8.8) 0.564
    Chronic renal failure 8 (0.8) 6 (0.8) 0.914
Median (IQR) duration of surgery (min) 90 (75–105) 85 (75–100) 0.002
No. (%) of patients with arthroplasty at the following site:
    Knee 736 (74.0) 554 (70.0) 0.065
    Hip 259 (26.0) 237 (30.0)
Median (IQR) Hg value (g/dl)
    Preoperative 136 (128–145) 138 (128–147) 0.185
    Postoperative 113 (104–121) 112 (104–122) 0.884
No. (%) of patients receiving a red blood cell transfusion 110 (11.1) 83 (10.5) 0.704
a

IQR, interquartile range; BMI, body mass index; Hg, hemoglobin.

b

Boldface values indicate statistically significant differences.