Table 1 Selected demographic and clinical characteristics, as well as laboratory findings according to skeletal muscle radiodensity (SMD) and neutrophil-to-lymphocyte ratio (NLR) of patients with COVID-19.

From: Low skeletal muscle radiodensity and neutrophil-to-lymphocyte ratio as predictors of poor outcome in patients with COVID-19

Characteristic

All-patients, n = 200

Skeletal muscle radiodensity (SMD)

Neutrophil-to-lymphocyte index (NLR)

Low, n = 71

Female: < 27.7

Male: < 35.5

High, n = 129

Female: > 27.7

Male: > 35.5

P value

Low, n = 72 < 4.2

High, n = 128 > 4.2

P value

Age, mean (SD)

59.1 (14.3)

66.0 (13.5)

55.6 (13.3)

 < 0.001a

58.2 (12.1)

59.7 (15.4)

0.471a

Sex, No (%)

Female

84 (42.0)

28 (39.4)

56 (43.4)

0.586b

26 (36.1)

58 (45.3)

0.206b

Male

116 (58.0)

43 (60.6)

73 (56.9)

46 (63.9)

70 (54.7)

BMI, No (%)

 < 30

119 (59.5)

49 (69.0)

70 (54.3)

0.042b

33 (45.8)

86 (67.2)

0.003b

\(\ge\) 30

81 (40.5)

22 (31.0)

59 (45.7)

39 (54.2)

42 (32.8)

Race, No (%)

African American

15 (7.5)

3 (4.2)

12 (9.3)

0.250c

10 (13.9)

5 (3.9)

0.018b

White/Caucasian

139 (69.5)

48 (67.6)

91 (70.5)

43 (59.7)

96 (75.0)

African + Caucasian

46 (23.0)

20 (28.2)

26 (20.2)

19 (26.4)

27 (21.1)

Smoking, No (%)

Never

109 (64.1)

33 (54.1)

76 (69.7)

0.108c

40 (64.5)

69 (63.9)

0.609c

Former smoker (more than 5 years)

40 (23.5)

19 (31.1)

21 (19.3)

17 (27.4)

23 (21.3)

Former smoker (less than 5 years)

13 (7.7)

7 (11.5)

6 (5.5)

3 (4.9)

10 (9.3)

Active smoker

8 (4.7)

2 (3.3)

6 (5.5)

2 (3.2)

6 (5.5)

Comorbidities, No (%)

Hypertension

115 (57.5)

‘51 (71.8)

64 (49.6)

0.002b

38 (52.8)

77 (60.2)

0.311b

Dyslipidemia

33 (16.5)

11 (15.5)

22 (17.1)

0.776b

13 (18.1)

20 (15.6)

0.657b

Emphysema

10 (5.0)

3 (4.2)

7 (5.4)

1.000c

5 (6.9)

5 (3.9)

0.500c

Chronic Kidney Disease

28 (14.0)

11 (15.5)

17 (13.2)

0.652b

5 (6.9)

23 (18.0)

0.034c

Congestive heart failure

14 (7.0)

5 (7.0)

9 (7.0)

1.000c

3 (4.2)

11 (8.6)

0.387 c

Coronaropathy

21 (10.5)

9 (12.7)

12 (9.3)

0.456b

9 (12.5)

12 (9.4)

0.489b

Stroke

7 (3.5)

4 (5.6)

3 (2.3)

0.248c

1 (1.4)

6 (4.7)

0.425c

Chronic liver Disease

7 (3.5)

2 (2.8)

5 (3.9)

1.00c

5 (6.9)

2 (1.6)

0.101c

Autoimmune Rheumatic Diseases

5 (2.5)

1 (1.4)

4 (3.1)

0.657c

2 (2.8)

3 (2.3)

1.000c

Cancer

21 (10.5)

9 (12.7)

12 (9.3)

0.456b

7 (9.7)

14 (11.0)

1.000c

Diabetes

66 (33.0)

30 (42.3)

36 (27.9)

0.039b

23 (31.9)

43 (33.6)

0.812b

1 or more comorbidity

178 (89.0)

66 (93.0)

112 (86.8)

0.184b

66 (91.7)

112 (87.5)

0.366b

2 or more comorbidities

129 (64.5)

53 (74.7)

76 (58.9)

0.026b

39 (54.2)

90 (70.3)

0.022b

Symptoms on admission, No (%)

Fever

133 (66.5)

42 (59.2)

91 (70.5)

0.103b

47 (65.3)

86 (67.19)

0.366

Cough

118 (59.0)

40 (56.3)

78 (60.5)

0.570b

42 (58.3)

76 (59.38)

0.886

Myalgia

68 (34.0)

20 (28.2)

48 (37.2)

0.197b

28 (38.9)

40 (31.25)

0.274

Fatigue

24 (12.0)

5 (7.0)

19 (14.7)

0.171c

11 (15.3)

13 (10.16)

0.285

Diarrhea

39 (19.5)

12 (16.9)

27 (20.9)

0.491b

15 (20.8)

24 (18.75)

0.721

Nausea or vomiting

38 (19.0)

9 (12.7)

29 (22.5)

0.091b

13 (18.1)

25 (19.53)

0.798

Dyspnea

122 (61.0)

42 (59.2)

80 (62.0)

0.691b

44 (61.1)

78 (60.94)

0.981

Anosmia

28 (14.0)

3 (4.2)

25 (19.4)

0.003c

13 (18.1)

15 (11.72)

0.215

Dysgeusia

22 (11.0)

4 (5.6)

18 (14.0)

0.098c

12 (16.7)

10 (7.81)

0.055

Headache

39 (19.5)

10 (14.1)

29 (22.5)

0.152b

14 (19.4)

25 (19.53)

0.988

Asymptomatic

19 (9.5)

8 (11.3)

11 (8.5)

0.616c

7 (9.7)

12 (9.38)

1.00

Laboratory findings, No (%)

Hemoglobin (M: < 14 g/dL; F: < 12 g/dL)

90 (45.0)

46 (64.8)

44 (34.1)

 < 0.001b

20 (27.8)

70 (54.7)

 < 0.001b

ALT (> 35 U/L)

66 (34.0)

14 (20.6)

52 (41.3)

0.004b

25 (36.8)

41 (32.5)

0.553b

Sodium (< 135 mEq/L)

58 (29.6)

26 (36.6)

32 (25.6)

0.104b

18 (25.4)

40 (32.0)

0.327b

Creatinine (> 1.2 mg/dL)

64 (32.2)

33 (47.1)

31 (24.0)

0.001b

13 (18.1)

51 (40.2)

0.001b

Prothrombin time (> 14 s)

26 (13.5)

13 (19.1)

13 (10.4)

0.090b

5 (7.4)

21 (16.8)

0.079c

D-dimer (> 500 mg/mL)

146 (86.4)

56 (91.8)

90 (83.3)

0.123b

45 (79.0)

101 (90.2)

0.044b

CRP (> 3 mg/L)

179 (96.2)

64 (98.5)

115 (95.0)

0.243b

62 (95.4)

117 (96.7)

0.655b

Glycemia (> 100 mg/dL)

151 (76.7)

55 (78.6)

96 (75.6)

0.636b

49 (70.0)

102 (80.3)

0.101b

  1. Missing data: ALT: 7; sodium: 4; creatinine: 1; prothrombin time: 7; D-dimer: 31; CRP: 14; and glycemia: 3
  2. ALT alanine aminotransferase, BMI Body mass index, CRP C-reactive protein, SD standard deviation.
  3. aStudent’s t-test.
  4. bchi-squared test.
  5. cFisher’s exact test.
  6. Bold indicates P value is statistcally significant.