Table 4 Multivariate analysis of factors associated with MFI-20 fatigue dimensions on D28

From: Prevalence of iron deficiency on ICU discharge and its relation with fatigue: a multicenter prospective study

MFI-20 fatigue dimensions	Regression Coefficient (95% CI)	P
Mental fatigue
ID	3.19 (0.74; 5.64)	0.012
Age (>60 years)	-1.81 (-3.49; -0.13)	0.035
Hb (<10 g/dL)	-0.11 (-1.7; 1.48)	0.89
SOFA (>7)	1.62 (-0.12; 3.36)	0.068
Gender (male)	0.95 (-1.01; 2.92)	0.34
ICU LOS (>10 days)	-0.48 (-2.05; 1.10)	0.55
General fatigue
ID	-2.12 (-4.41; 0.16)	0.068
Age (>60 years)	0.35 (-1.22; 1.92)	0.66
Hb (<10 g/dL)	1.82 (0.36; 3.29)	0.016
SOFA (>7)	0.86 (-0.75; 2.47)	0.29
Gender (male)	0.07 (-1.69; 1.83)	0.94
ICU LOS (>10 days)	1.08 (-0.37; 2.53)	0.14
Reduced activity
ID	1.24 (-0.11; 2.59)	0.07
Age (>60 years)	-0.21 (-1.15; 0.72)	0.65
Hb (<10 g/dL)	-0.36 (-1.22; 0.51)	0.41
SOFA (>7)	0.57 (-0.38; 1.52)	0.23
Gender (male)	0.61 (-0.42; 1.65)	0.24
ICU LOS (>10 days)	0.58 (-0.27; 1.44)	0.18
Reduced motivation
ID	-1.25 (-3.06; 0.55)	0.17
Age (>60 years)	-0.28 (-1.51; 0.96)	0.66
Hb (<10 g/dL)	0.38 (-0.81; 1.49)	0.56
SOFA (>7)	-0.03 (-1.29; 1.24)	0.97
Gender (male)	0.35 (-1.04; 1.73)	0.62
ICU LOS (>10 days)	-0.39 (-1.53; 0.75)	0.49

A linear regression model was created including: ID on ICU discharge, age (<or ≥60 years), gender (male), SOFA (<or ≥7), ICU LOS (<or ≥10 days), low Hb (Hb_D28 < 10 g/dL) (model 1). Data are presented as OR with 95% confidence interval. Hb: hemoglobin; ICU: intensive care unit; ID: iron deficiency; LOS: length of stay;.MFI: multidimensioal fatigue inventory; SOFA: Sequential Organ Failure Assessment score. Values in italic are p values.

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