Table 1:
Baseline characteristics of the study population
| Overall (n=89) | Anesthesia Machine (n=17) | ICU ventilator (n=72) | P value | |
|---|---|---|---|---|
| Age, yr | 59 [51–67] | 62 [53–70] | 59 [51–66] | 0.333 |
| Male sex, no. (%) | 70 (78.7) | 12 (70.6) | 58 (80.6) | 0.510 |
| BMI, kg/m2 | 28 [26–31] | 27 [25–30] | 28 [26–32] | 0.262 |
| Race, no. (%) | 0.657 | |||
| White | 73 (82.0) | 13 (76.4) | 60 (83.3) | |
| Black | 2 (2.2) | 1 (5.8) | 1 (1.3) | |
| Asian | 2 (2.2) | 0 (0) | 2 (2.7) | |
| Other | 12 (13.4) | 3 (17.6) | 9 (12.5) | |
| Severity at admission | ||||
| APACHE II score | 11 [8–14] | 14 [8–16] | 11 [8–14] | 0.133 |
| SOFA score | 5 [3–7] | 6 [4–8] | 4 [3–7] | 0.188 |
| Comorbidities, no. (%) | ||||
| Hypertension | 46 (51.7) | 7 (41.2) | 39 (54.2) | 0.422 |
| Diabetes mellitus | 16 (18.2) | 3 (17.7) | 13 (18.3) | 1.000 |
| Obesity | 25 (28.4) | 3 (17.7) | 22 (31.0) | 0.375 |
| COPD | 5 (5.6) | 1 (5.9) | 4 (5.6) | 1.000 |
| Hypercholesterolemia | 15 (16.9) | 3 (17.7) | 12 (16.7) | 1.000 |
Data reported as Number (Percentage) or Median [Interquartile Range]; Differences between groups were assessed with a Mann-Whitney U test or Fisher’s Exact test depending on variable type. BMI: Body Mass Index; APACHE: Acute Physiology and Chronic Health Evaluation; SOFA: Sequential Organ Failure Assessment; COPD: Chronic Obstructive Pulmonary Disease.