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. 2021 Nov 5;14:269–272. doi: 10.17161/kjm.vol14.15506

Table 1.

Comparison of baseline characteristics between patients who received gauze surgical dressings before June 2017, and patients who received silver-impregnated surgical dressings after June 2017.

Gauze dressings
Group A, N = 464
Silver dressings
Group B, N = 505
p valuea
Characteristics Mean (± Standard Deviation)
Age, years 62.2 (13) 61.2 (13.3) 0.23
BMI, kg/m2 30 (5.6) 30 (6.3) 0.99
Hemoglobin A1C, mg/dL 6 (1.7) 6.1 (1.7) 0.41
Cardiac bypass time, min 106.5 (46.6) 109.1 (53.2) 0.41
Peak glucose, mg/dL 179.1 (41.3) 186.9 (62.1) 0.02a
Peak creatinine, mg/dL 1.6 (1.6) 1.5 (1.5) 0.45
Ventilation time, hour 17.4 (46.9) 20.6 (48.6) 0.30
Length of stay, days 8.1 (5.9) 7.6 (5.3) 0.19
n (%)
Sex, female 128 (27.6) 160 (31.7) 0.16
Current smoker 260 (56) 291 (57.6) 0.62
Severe COPDb 39 (8.4) 26 (5.1) 0.04a
Diabetes 177 (38.1) 170 (33.7) 0.15
Hypertension 386 (83.2) 410 (81.2) 0.42
Dyslipidemia 361 (77.8) 400 (78.2) 0.59
Dialysis 17 (3.7) 13 (2.6) 0.33
Emergent operation 35 (7.5) 44 (8.7) 0.51
Valve procedure 190 (41) 193 (38.2) 0.38
Blood products 186 (40) 189 (37.4) 0.40
a

p < 0.05, statistically significant

b

FEV1 < 50% of predicted