Table 1.

Demographics

Variable	MV	No MV	Total	P value
Number of patients, n	49	51	100
Age	66 (57–79)	59 (39–70)	65 (49–75)	0.011
Male, n (%)	29 (59.2)	28 (54.9)	57 (57)	0.665
ICU LOS, hours	31.0 (22.5–46.8)	97.5 (44.4–163.8)	45.8 (24.5–117.5)	<0.001
Hospital LOS, days	6 (4–9)	8 (5–15)	7 (4–12)	0.091
Death (%)	2 (4.1)	10 (19.6)	12 (12.0)	0.028
Number of comorbidities*	6 (5–10)	11 (6–15)	8 (5–12.5)	0.006
Charlson Comorbidity Score	2 (1–4)	1 (0–3)	2 (1–3.5)	0.224
Elixhauser Score	5 (3–10)	8 (3–15)	8 (3–11.5)	0.238

Patient and clinical characteristics, by mechanical ventilation status. Data presented as median (IQR) unless otherwise stated.

*Based on Primary (P) and Associated (A) ICD-10 code prefixes in diagnostic data.

ICD-10, International Statistical Classification of Diseases and Related Health Problems, 10th revision; ICU, intensive care unit; LOS, length of stay; MV, mechanical ventilation.