Table 2.
Baseline clinical characteristics, medical history and risk factors in the 2 groups without and with Stenotrophomonas infection.
| Statistic | Stenotrophomonas | Test | OR (95% CI) | p value | ||
|---|---|---|---|---|---|---|
| No (103 patients) | Yes (20 patients) | |||||
| Age | m ± sd | 65.5 ± 13.3 | 68.2 ± 7.8 | T | 0.384 | |
| Male gender | N (%) | 75 (72.8%) | 16 (80%) | Chi2 | 0.67 (0.21–2.18) | 0.503 |
| Blood type | ||||||
| O | N (%) | 33 (38.8%) | 3 (17.6%) | Chi2 | 0.015 | |
| A | N (%) | 39 (45.9%) | 7 (41.2%) | Chi2 | ||
| B | N (%) | 10 (11.8%) | 3 (17.6%) | Chi2 | ||
| AB | N (%) | 3 (3.5%) | 4 (23.5%) | Chi2 | ||
| Positive Rhesus antigen | N (%) | 77 (90.6%) | 17 (100%) | Chi2 | 0.188 | |
| O2 needs at admission | ||||||
| No O2 | N (%) | 10 (9.7%) | 1 (5%) | MWU | 0.161 | |
| O2 < 4 L/min | N (%) | 18 (17.5%) | 4 (20%) | |||
| O2 4–8 L/min | N (%) | 32 (31.1%) | 2 (10%) | |||
| MHC/Optiflow | N (%) | 42 (40.8%) | 13 (65%) | |||
| Endotracheal tube | N (%) | 1 (1%) | 0 (0%) | |||
| Initial ICU admission | N (%) | 51 (49.5%) | 9 (45%) | Chi2 | 0.83 (0.32–2.18) | 0.712 |
| Day symptoms started | m ± sd | − 6.9 ± 5.8 | − 6.1 ± 4.4 | T | 0.559 | |
| 1st Ct value | m ± sd | 22.8 ± 5.6 | 20.2 ± 4.4 | T | 0.113 | |
| Weight in kg | m ± sd | 84.6 ± 15.3 | 84.3 ± 18.3 | T | 0.944 | |
| Hypertension | N (%) | 71 (68.9%) | 12 (60%) | Chi2 | 0.68 (0.25–1.81) | 0.435 |
| Diabetes mellitus | N (%) | 45 (43.7%) | 11 (55%) | Chi2 | 1.58 (0.60–4.13) | 0.353 |
| Cardiovascular disease | N (%) | 37 (35.9%) | 5 (25%) | Chi2 | 0.59 (0.20–1.77) | 0.346 |
| Chronic renal failure | N (%) | 19 (18.4%) | 4 (20%) | Chi2 | 1.11 (0.33–3.68) | 0.870 |
| Heart failure | N (%) | 14 (14%) | 4 (20%) | Chi2 | 1.54 (0.45–5.27) | 0.493 |
| Immunosuppression | N (%) | 10 (10%) | 3 (15%) | Chi2 | 1.59 (0.40–6.38) | 0.511 |
| Obstructive lung disease | N (%) | 26 (26%) | 5 (25%) | Chi2 | 0.95 (0.31–2.87) | 0.926 |
| Previous treatment | ||||||
| Previous pathogen | N (%) | 5 (5%) | 2 (10%) | Chi2 | 2.11 (0.38–11.74) | 0.384 |
| Treatment with meropenem | N (%) | 4 (4%) | 6 (30%) | Chi2 | 10.39 (2.60–41.5) | 0.000 |
| Treatment with quinolone | N (%) | 6 (5.9%) | 1 (5%) | Chi2 | 0.83 (0.09–7.32) | 0.869 |
| Treatment with piperacillin/tazobactam | N (%) | 8 (8%) | 4 (20%) | Chi2 | 2.88 (0.77–10.7) | 0.102 |
Categorical data are presented as frequencies and percentages (N (%)); Continuous data not departing from normality assumptions are presented as mean and standard deviation (m ± sd). Chi2: Chi square test; MWU: Mann–Whitney U test. For binary data, the odds ratio with its 95% confidence interval were calculated [OR (95% CI)]. F: Fisher exact test. T: independent samples T test.