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Table 1 Baseline patient characteristics, demographics, and infection characteristics

From: Serum cystatin C predicts vancomycin trough levels better than serum creatinine in hospitalized patients: a cohort study

Characteristic

Patients (n = 173)a

Age, years

59 ± 16

Male, n (%)

93 (54)

Caucasian, n (%)

164 (95)

Body mass index, kg/m2

25.5 ± 3.6

Body surface area, m2

1.9 ± 0.2

Non-operative admission diagnosis, n (%)

110 (65)

Intensive care unit, n (%)

37 (22)

Renal parameters

 

  History of moderate to severe kidney disease, n (%)

22 (13)

  Serum creatinine, mg/dLb

0.8 ± 0.4

  Cystatin C, mg/L

1.1 ± 0.5

  eGFR, mL/minc

 

   Cockcroft-Gault

108 ± 48

   CKD-EPIcreatinine

98 ± 29

   CKD-EPIcystatin C

84 ± 37

   CKD-EPIcreatinine-cystatin C

91 ± 33

Infectious source, n (%)d

 

  Pulmonary

50 (29)

  Bacteremia

36 (21)

  Intra-abdominal

28 (16)

  Skin and soft tissue infection

28 (16)

  Musculoskeletal

27 (16)

  Other/unknowne

43 (25)

Microbiology

 

  Culture positive, n (%)

98 (57)

  Monomicrobial

51

   Specific Gram-positive organisms isolated

 

    Coagulase-negative Staphylococcus spp.

25

    Methicillin-susceptible Staphylococcus aureus

15

    Methicillin-resistant S. aureus

10

    Enterococcus spp.

22

Vancomycin

 

  Loading dose used, n (%)

64 (37)

  Maintenance dose

 

   Non-weight based, mg

1,206 ± 263

   Weight-based, mg/kg

16.3 ± 2.4

   Dose between 14 and 21 mg/kg, n (%)

152 (88)

  Interval, n (%)

 

   8 hours

8 (5)

   12 hours

148 (86)

   24 hours

17 (10)

  Goal trough according to site of infection

 

   10-15 mg/L, n (%)

69 (40)

   15-20 mg/L, n (%)

104 (60)

  Trough level, mg/L

12.5 ± 6.0

  1. aValues expressed as mean ± standard deviation unless noted. bTo convert the values for serum creatinine to micromoles per liter, multiply by 88.4. cTo convert from mL/min per 1.732 multiply by [(0.007184*height (cm)0.725*weight (kg)0.425)/1.73] [37]. dSum of percentages exceeds 100 due to multiple sources of suspected/documented infection. eOther sources include genitourinary, febrile neutropenia, cardiovascular, central nervous system, acute otitis media, and prophylaxis. CKD-EPI, Chronic Kidney Disease Epidemiology Collaborative; eGFR, estimated glomerular filtration rate; n, number.