Table 1.

Correlation between rectus femoris muscle area and clinically relevant outcomes

Variable	Mean survivors	Mean non-survivors	Mean difference (95%CI)
Delta A1 - A3	-4.72	-1.05	-3.6 (-16.1 - 8.8; p = 0.56)
Delta A1 - A10	-21.12	-14.1	-7.0 (-21.1 - 7.1; p = 0.31)
	Variation ≥ 10% between A1 and A3	Variation < 10 % between A1 and A3	p
MV time	9 ± 13	7.5 ± 14	0.7
Length of ICU stay	10 ± 14	10 ± 16	0.49
Length of hospital stay	27 ± 29	33 ± 38	0.3

95%CI - 95% confidence interval; A1 - rectus femoris muscle area on the first day of admission; A3 - rectus femoris muscle area on the third day of admission; A10 - rectus femoris muscle area on the tenth day of admission; MV - mechanical ventilation; ICU - intensive care unit.