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Table 1 Baseline characteristics of patients with S. maltophilia bacteremia

From: Risk factors for mortality in patients with Stenotrophomonas maltophilia bacteremia and clinical impact of quinolone–resistant strains

Factors Survivors N = 44 Non-survivors N = 82 p value
Age, y, mean ± SD 71.0 (60.5–79) 74.5 (61.0–80.25) 0.310
Age ≥ 65 years, n(%) 24 (54.5) 34 (41.5) 0.160
Male, n (%) 33 (75.0) 53 (64.6) 0.233
BMI, kg/m2, median (IQR) 21.7 (19.4–25.0) 21.9 (19.0–24.4) 0.847
Comorbidities
 HTN, n (%) 15 (34.1) 32 (39.0) 0.585
 DM, n (%) 16 (36.4) 23 (28.0) 0.336
 Cardiovascular disease, n (%) 9 (20.5) 13 (15.9) 0.517
 Chronic kidney diseasea, n (%) 4 (9.1) 4 (4.9) 0.449
 End stage renal disease, n (%) 1 (2.3) 7 (8.5) 0.259
 Chronic liver disease, n (%) 5 (11.4) 11 (13.4) 0.742
 Pulmonary disease, n (%) 4 (9.1) 8 (9.8) 1.000
 Solid tumor, n (%) 18 (40.9) 43 (52.4) 0.217
 Hematologic malignancy, n (%) 1 (2.3) 17 (20.7) 0.005
 Solid organ transplantation, n (%) 3 (6.8) 4 (4.9) 0.694
 Charlson score, mean ± SD 5.7 ± 3.0 6.9 ± 3.2 0.049
Predisposing factors
 Chemotherapy, n (%) 4 (9.1) 10 (12.2) 0.769
 Major surgerya, n (%) 15 (34.9) 29 (35.4) 0.957
 ICU care, n (%) 29 (65.9) 54 (65.9) 0.995
 Length of stay in hospital before bacteremia (days), median (IQR) 12.0 (3.5–24.5) 26.0 (14.0–56.0) 0.038
 Central venous catheter, n (%) 31 (70.5) 59 (72.8) 0.777
 Hemodialysis catheter, n (%) 2 (4.5) 15 (18.8) 0.028
 Mechanical ventilator, n (%) 19 (43.2) 41 (50.6) 0.427
 Foley catheter, n (%) 28 (63.6) 47 (58.0) 0.541
Clinical severity
 Shock, n (%) 10 (22.7) 33 (40.2) 0.075
 APACHE II score, mean ± SD 11.0 ± 5.8 15.4 ± 6.9 < 0.001
Laboratory findings
 Neutropenia, n (%) 3 (6.8) 15 (18.3) 0.079
 Hypoalbuminemia, n (%) 18 (6.8) 56 (18.3) 0.003
 Thrombocytopenia, n (%) 9 (20.5) 38 (46.3) 0.004
 Hemoglobin (g/L), mean ± SD 10.1 ± 1.6 9.4 ± 1.5 0.032
 C-reactive protein (mg/L), median (IQR) 69.2 (32.2–129.5) 89.3 (58.5–148.0) 0.057
 Estimated GFR (ml/min per 1.73m2), median (IQR) 85.0 (54.2–98.0) 80.0 (44.0–104.0) 0.675
 Hospital stay, days 53.0 (20.5–78.0) 60.0 (35.0–97.0) 0.137
 Length of stay in ICU, days 30 (11.5–50.0) 39 (23.0–67.0) 0.640
  1. Note. SD Standard deviation, BMI Body mass index, IQR Interquartile range, HTN Hypertension, DM Diabetes mellitus, ICU Intensive care unit, APACHE II Acute Physiologic and Chronic Health Evaluation II score
  2. a Major surgery, any surgical procedure that involves anesthesia or respiratory assistance