Table 3 Descriptive frequencies for the sample of patients hospitalised with age less than 70 years^a

N

N.Obs

174 (100.0)

45 (25.9)

129 (74.1)

123 (70.7)

51 (29.3)

Age^b

Continuous

54.3 (10.1)

51.4 (10.6)

55.4 (9.8)

1.04 (1.00–1.07)

0.250

53.1 (10.1)

57.2 (9.4)

1.05 (1.01–1.09)

0.010

Gender

Female

62 (35.6)

17 (37.8)

45 (34.9)

1.00 (−)

–

46 (37.4)

16 (31.4)

1.00 (−)

–

Male

112 (64.4)

28 (62.2)

84 (65.1)

1.13 (0.56–2.29)

0.728

77 (62.6)

35 (68.6)

1.31 (0.65–2.62)

0.447

Diabetes

No

142 (81.6)

38 (84.4)

104 (80.6)

1.00 (−)

–

106 (86.2)

36 (70.6)

–

–

Yes

32 (18.4)

7 (15.6)

25 (19.4)

1.30 (0.52–3.26)

0.563

17 (13.8)

15 (29.4)

0.78 (0.27–2.28)

0.648

Missing

–

–

–

–

–

–

–

–

–

CVD

No

154 (88.5)

40 (88.9)

114 (88.4)

1.00 (−)

–

108 (87.8)

46 (90.2)

–

–

Yes

20 (11.5)

5 (11.1)

15 (11.6)

1.05 (0.36–3.08)

0.925

15 (12.2)

5 (9.8)

3.50 (2.49–4.90)

< 0.001

Missing

–

–

–

–

–

–

–

–

–

Obesity

No

142 (81.6)

37 (82.2)

105 (81.4)

1.00 (−)

–

104 (84.6)

38 (74.5)

1.00 (−)

Yes

16 (9.2)

4 (8.9)

12 (9.3)

1.06 (0.32–3.48)

0.927

11 (8.9)

5 (9.8)

1.24 (0.41–3.81)

0.706

Missing

16 (9.2)

4 (8.9)

12 (9.3)

–

–

8 (6.5)

8 (15.7)

–

–

Cancer

No

164 (94.3)

40 (88.9)

124 (96.1)

1.00 (−)

–

116 (94.3)

48 (94.1)

1.00 (−)

–

Yes

10 (5.7)

5 (11.1)

5 (3.9)

0.32 (0.09–1.17)

0.920

7 (5.7)

3 (5.9)

1.04 (0.26–4.17)

0.961

ESRD

No

171 (98.3)

45 (100.0)

126 (97.7)

1.00 (−)

–

122 (99.2)

49 (96.1)

1.00 (−)

Yes

3 (1.7)

–

3 (2.3)

2.52 (0.13–49.70)

0.178

1 (0.8)

2 (3.9)

4.98 (0.44–56.18)

0.177

Missing

–

–

–

–

–

–

–

–

–

COPD

No

165 (94.8)

44 (97.8)

121 (93.8)

1.00 (−)

–

118 (95.9)

47 (92.2)

1.00 (−)

Yes

1 (5.2)

1 (2.2)

8 (6.2)

2.91 (0.35–23.93)

0.260

5 (4.1)

4 (7.8)

2.01 (0.52–7.81)

0.323

Hypertension

No

115 (66.1)

33 (73.3)

82 (63.6)

1.00 (−)

–

83 (67.5)

32 (62.7)

1.00 (−)

Yes

59 (33.9)

12 (26.7)

47 (36.4)

1.58 (0.74–3.34)

0.227

40 (32.5)

19 (37.3)

1.23 (0.62–2.44)

0.550

Missing

–

–

–

–

–

–

–

–

–

Fever

No

13 (7.5)

6 (13.3)

7 (5.4)

1.00 (−)

–

8 (6.5)

5 (9.8)

1.00 (−)

–

Yes

161 (92.5)

39 (86.7)

122 (94.6)

2.68 (0.85–8.46)

0.100

115 (93.5)

46 (90.2)

0.64 (0.20–2.06)

0.462

Cough

No

59 (33.9)

20 (44.4)

39 (30.2)

1.00 (−)

–

41 (33.3)

18 (35.3)

1.00 (−)

Yes

106 (60.9)

22 (48.9)

84 (65.1)

1.96 (0.96–4.00)

0.660

76 (61.8)

30 (58.8)

0.90 (0.45–1.81)

0.765

Missing

9 (5.2)

3 (6.7)

6 (4.7)

–

–

6 (4.9)

3 (5.9)

–

–

Asthenia

No

113 (64.9)

28 (62.2)

85 (65.9)

1.00 (−)

–

79 (64.2)

34 (66.7)

1.00 (−)

Yes

44 (25.3)

10 (22.2)

34 (26.4)

1.12 (0.49–2.55)

0.787

31 (25.2)

13 (25.5)

0.97 (0.45–2.09)

0.947

Missing

7 (9.8)

7 (15.6)

10 (7.8)

–

–

13 (10.6)

4 (7.8)

–

–

Diarrhea

No

148 (85.1)

37 (82.2)

111 (86.0)

1.00 (−)

–

103 (83.7)

45 (88.2)

1.00 (−)

Yes

26 (14.9)

8 (17.8)

18 (14.0)

0.75 (0.30–1.87)

0.542

20 (16.3)

6 (11.8)

0.69 (0.26–1.82)

0.440

Missing

–

–

–

–

–

–

–

–

–

Dyspnea

No

87 (50.0)

29 (64.4)

58 (45.0)

1.00 (−)

–

66 (53.7)

21 (41.2)

1.00 (−)

Yes

87 (50.0)

16 (35.6)

71 (55.0)

2.22 (1.10–4.48)

0.240

57 (46.3)

30 (58.8)

1.65 (0.85–3.20)

0.133

Missing

–

–

–

–

–

–

–

–

–

Procalcitonin ng/mL

< 0.2

131 (75.3)

40 (88.9)

91 (70.5)

1.00 (−)

98 (79.7)

33 (64.7)

1.00 (−)

≥0.2

43 (24.7)

5 (11.1)

38 (29.5)

3.34 (1.22–9.12)

< 0.01

25 (20.3)

18 (35.3)

2.14 (1.04–4.41)

0.410

Missing

–

–

–

–

–

–

–

–

–

LDH U/L

Low

44 (25.3)

26 (57.8)

18 (14.0)

1.00 (−)

–

75 (61.0)

11 (21.6)

1.00 (−)

–

High

130 (74.7)

19 (42.2)

111 (86.0)

8.44 (3.89–18.29)

< 0.001

48 (39.0)

40 (78.4)

5.68 (2.66–12.14)

< 0.001

Missing

–

–

–

–

–

–

–

–

–

MDW

Low

57 (32.8)

26 (57.8)

31 (24.0)

1.00 (−)

–

64 (52.0)

12 (23.5)

1.00 (−)

–

High

117 (67.2)

19 (42.2)

98 (76.0)

4.33 (2.11–8.85)

< 0.001

59 (48.0)

39 (76.5)

3.53 (1.69–7.37)

< 0.001

Missing

–

–

–

–

–

–

–

–

–

Saturation %

High

91 (52.3)

40 (88.9)

51 (39.5)

1.00 (−)

103 (83.7)

26 (51.0)

1.00 (−)

Low

81 (47.7)

4 (8.9)

77 (59.7)

15.10 (5.09–44.77)

< 0.001

19 (15.4)

24 (47.1)

5.00 (2.39–10.49)

< 0.001

Missing

–

1 (2.2)

1 (0.8)

–

–

1 (0.8)

1 (2.0)

–

–

D-dimer mg/L

Low

61 (35.1)

18 (40.0)

43 (33.3)

1.00 (−)

–

119 (96.7)

45 (88.2)

1.00 (−)

–

High

113 (64.9)

27 (60.0)

86 (66.7)

1.33 (0.66–2.68)

0.423

4 (3.3)

6 (11.8)

3.97 (1.07–14.71)

0.380

Missing

–

–

–

–

–

–

–

–

–

Prothrombin Time %

High

77 (44.3)

22 (48.9)

55 (42.6)

1.00 (−)

74 (60.2)

24 (47.1)

1.00 (−)

Low

97 (55.7)

23 (51.1)

74 (57.4)

1.29 (0.65–2.54)

0.468

49 (39.8)

27 (52.9)

1.70 (0.88–3.28)

0.114

Missing

–

0 (0.0)

0 (0.0)

–

–

0 (0.0)

0 (0.0)

–

–

CRP mg/L

Low

65 (37.4)

28 (62.2)

37 (28.7)

1.00 (−)

–

76 (61.8)

17 (33.3)

1.00 (−)

–

High

109 (62.6)

17 (37.8)

92 (71.3)

4.10 (2.01–8.36)

< 0.001

47 (38.2)

34 (66.7)

3.23 (1.63–6.43)

< 0.001

Lymphocytes x10³μL

High

56 (32.2)

25 (55.6)

31 (24.0)

1.00 (−)

–

90 (73.2)

26 (51.0)

1.00 (−)

Low

118 (67.8)

20 (44.4)

98 (76.0)

3.95 (1.94–8.06)

< 0.001

33 (26.8)

25 (49.0)

2.62 (1.33–5.17)

< 0.01