Table 1 Demographic and descriptive data of the study participants

Age (years)

56.44 ± 19.21

62.50 (22–86)

Height (cm)

169.36 ± 5.51

170.0 (155–182)

Mid-upper arm circumference (cm)

29.34 ± 4.61

30.00 (21–41)

Bodyweight (kg)

70.22 ± 9.71

70.00 (53–114)

BMI (kg/m²⁾

27.29 ± 5.08

27.50 (16–39)

Temperature (°C)

37.32 ± 0.59

37.00 (37–39)

MV (L/min)

9.26 ± 2.57

8.00 (6–15)

APACHE II score

16.60 ± 7.45

16.00 (3–35)

SOFA score

5.00 ± 3.08

5.00 (0–12)

NUTRIC score

2.92 ± 2.19

3.00 (0–8)

Duration of ventilation (days)

10.70 ± 10.56

6.50 (2–40)

ICU stay (days)

13.22 ± 12.88

8.00 (2–50)

Caloric requirement (indirect calorimetry, kcal/day)

1619.80 ± 253.82

1600.00 (1100–2300)

Caloric requirement (weight-based [25 kcal/kg/day], kcal/day)

1755.90 ± 242.48

1750.00 (1325–2300)

Caloric requirement (Faisy–Fagon equation, kcal/day)

1866.72 ± 215.81

1876.00 (974–2225)

Caloric requirement (PSU_m equation, kcal/day)

1631.09 ± 267.98

1589.24 (1199.24–2245.90)