Table 4. Outcomes in patients in the low and non-low BMI groups.

Variable	Low BMI group (<18.5 kg/m2) (n = 103)	Non-low BMI group (≥18.5 kg/m2) (n = 445)	p-value
28-day mortality, n (%)	22 (21.4)	54 (13.9)	0.014
In-hospital mortality, n (%)	25 (24.3)	79 (17.8)	0.128
ICU-free days, median (IQR)	18 (4–24)	21 (10–25)	0.072

Abbreviations: BMI, body mass index; ICU, intensive care unit; IQR, interquartile range.