Clinical Features, Outcomes, and Risk Factors of Bloodstream Infections due to Stenotrophomonas maltophilia in a Tertiary-Care Hospital of China: A Retrospective Analysis

Table 3

Risk factors related to 30-day mortality of SMB^∗.

Variables	Total ()	Survived ()	Death ()
Age (years)
≥65	26	15	11
<65	50	35	15	0.966^a
Gender				0.653^a
Male	53	34	19
Female	23	16	7
Risk factors for SMB ^c:
CVC∗	58	33	25	0.004^b∗
Thoracic tract	8	4	4	0.434^b
Abdominal tract	20	12	8	0.525^b
T-tube	9	6	3	0.100^b
Urinary tract	34	19	15	0.145^b
Trachea intubation	21	12	9	0.419^b
Tracheotomy	8	3	5	0.114^b
MV∗	27	13	14	0.006^b ∗
Surgery (within 30 days)	28	15	12	0.209^b
Chemotherapy	23	19	4	0.566^b
Hemodialysis	19	8	11	0.024^b∗
Septic shock	10	3	7	0.016^b∗
Previous corticosteroids	38	23	15	0.469^b
Total parenteral nutrition	12	5	7	0.055^b
ICU residence	19	10	9	0.163^b
APACHE Ⅱ score, median		14.1 ± 8.3	22.4 ± 7.7
Mean ± SD	11	10	1	0.065^a
Charlson comorbidity index	76	3.5 ± 3.7	4.2 ± 3.3	0.315^a
Prior use of antibiotics∗ mean ± SD	76	5.1 ± 3.1	6.6 ± 3.4	0.068^a
Co-infection		29	19	0.196^b

^a: t-test; ^b: Pearson’s chi-squared test; ^c: SMB = Stenotrophomonas maltophilia bacteremia; CVC = central venous catheter; MV = mechanical ventilation; Prior use of antibiotics = types of antibiotics used prior to SMB was confirmed.