Table 1 Characteristics of patients according to their vital status.

From: Obesity and mortality in critically ill COVID-19 patients with respiratory failure

 

Overall

Survivors

Non-survivors

p-value

 

(n = 222)

(n = 177)

(n = 45)

Age at admission

64.0 (55.3–72.0)

62.0 (54.0–70.0)

72 (62.0–75.0)

<0.001

 18–45 years

19 (8.6)

19 (10.8)

0 (0.0)

0.007

 45–54 years

34 (15.5)

28 (15.9)

6 (13.6)

 

 5–64 years

63 (28.6)

53 (30.1)

10 (22.7)

 

 65–74 years

72 (32.7)

57 (32.4)

15 (34.1)

 

 75 years and more

32 (14.5)

19 (10.8)

13 (29.5)

 

Male sex

160 (72.1)

128 (72.3)

32 (71.1)

1.000

BMI (kg/m2)

29.1 (25.8–32.8)

29.3 (25.9–32.8)

28.7 (25.7–32.3)

0.251

BMI categories

   

0.024

Normal weight

34 (15.3)

28 (15.8)

6 (13.3)

 

Overweight

92 (41.4)

72 (40.7)

20 (44.4)

 

Moderate obesity

80 (36.1)

69 (39.0)

11 (24.4)

 

Severe obesity

16 (7.2)

8 (4.5)

8 (17.9)

 

Diabetes mellitus

59 (26.6)

44 (24.9)

15 (33.3)

0.337

Hypertension

108 (48.6)

78 (44.1)

30 (66.7)

0.011

Dyslipidemia

79 (35.6)

56 (31.6)

23 (51.1)

0.024

Chronic pulmonary disease

42 (18.9)

29 (16.4)

13 (28.9)

0.089

Including COPD

14 (6.3)

5 (2.8)

9 (20.0)

<0.001

 Including OSAS

22 (9.9)

16 (9.0)

6 (13.3)

0.561

Cardiovascular disease

54 (24.3)

39 (22.0)

15 (33.3)

0.167

Including CHD

31 (14.0)

20 (11.3)

11 (24.4)

0.042

 including chronic heart failure

5 (2.3)

3 (1.7)

2 (4.5)

0.568

Immunodeficiency

24 (10.8)

17 (9.6)

7 (15.6)

0.379

Including immunosuppressant medication

9 (4.1)

7 (4.0)

2 (4.4)

1.000

Including active cancer

9 (4.1)

5 (2.8)

4 (8.9)

0.156

Chronic kidney disease

15 (6.8)

8 (4.5)

7 (15.6)

0.021

Neurological disorder

10 (4.5)

7 (4.0)

3 (6.7)

0.703

Number of comorbidities

   

<0.001

0

71 (32.0)

66 (37.3)

5 (11.1)

 

1

56 (25.2)

47 (26.6)

9 (20.0)

 

2

47 (21.2)

33 (18.6)

14 (31.1)

 

3 and more

48 (21.6)

31 (17.5)

17 (37.8)

 

ARDS severitya

   

<0.001

Mild

13 (5.9)

13 (7.3)

0 (0)

 

Moderate

109 (49.1)

98 (55.4)

11 (24.4)

 

Severe

100 (45)

66 (37.3)

34 (75.6)

 

PaO2/FiO2 (mmHg)

109 (79.0–142.0)

118.5 (84.0–153.0)

85 (70.0–97.0)

<0.001

Mechanical ventilation

183 (82.4)

141 (79.7)

42 (93.3)

0.053

Mechanical ventilation duration (days)

12.5 (8.0-18.0)

12.0 (7.0-18.0)

13.0 (8.0-19.0)

0.518

Hydroxychloroquine

31 (14.3)

25 (14.5)

6 (13.3)

1.000

Antiviral therapy

42 (19.0)

32 (18.2)

10 (22.2)

0.686

Corticosteroids

53 (23.9)

35 (19.8)

18 (40.0)

0.008

SAPS II

44.5 (32.3–62.0)

42.0 (28.0–59.0)

62.0 (44.0–75.0)

<0.001

SOFA score

7.0 (4.0–8.0)

7.0 (4.0–8.0)

8.0(7.0–11.0)

<0.001

ICU length of stay (days)

13.0 (5.0–22.0)

13.0 (5.0–22.0)

12.0 (6.0–19.0)

0.360

Length of hospital stay (days)

18.0 (10.0–28.0)

20.0 (12.0–29.0)

13.0 (7.0–22.0)

0.001

  1. Data are expressed as median (IQR), n (%).
  2. Boldface p-value is statistically significant (p < 0.05).
  3. ARDS acute respiratory distress syndrome, CHD coronary heart disease, COPD chronic obstructive pulmonary disease, ICU intensive care unit, OSAS obstructive sleep apnea syndrome, PaO2/FiO2 arterial partial pressure in oxygen/ fraction of inspired oxygen, SAPS II simplified acute physiology score II, SOFA sequential organ failure assessment.2 2 arterial partial pressure in oxygen/ fraction of inspired oxygen, SAPS II simplified acute physiology score II, SOFA sequential organ failure assessment.
  4. aARDS severity was defined as a PaO2/FiO2 ratio of 300 to 201, 200 to 101, and ≤100 mm Hg for mild, moderate, and severe ARDS, respectively.