Table 1 Baseline characteristics of patients from the sepsis cohort

Age^c (IQR)

240

59.3 (53.2, 65.7)

59.3 (52.7, 65.7)

59.3 (53.2, 65.7)

0.885^a

Female gender (%)

240

53 (44)

56 (47)

109 (45)

0.791^b

Smoking (%)

231

0.505^b

Never

40 (34)

33 (29)

73 (32)

Former

44 (38)

40 (35)

84 (36)

Current

33 (28)

41 (36)

74 (32)

Diabetes (%)

240

31 (26)

47 (39)

78 (32)

0.045^b

Summer season (%)

240

34 (28)

35 (29)

69 (29)

1^b

Day length hours (IQR)^c

240

12.0 (10.6, 13.6)

12.0 (10.6, 13.5)

12.0 (10.6, 13.6)

0.655^a

APACHE II Score (IQR)^c

240

28 (23, 32.2)

28 (23, 32.2)

28 (23, 32.2)

NA

Number of non-pulmonary organ failures (%)

240

0.753^a

0

15 (12)

24 (20)

39 (16)

1

60 (50)

45 (38)

105 (44)

2

39 (32)

39 (32)

78 (32)

3

4 (3)

9 (8)

13 (5)

4

2 (2)

3 (2)

5 (2)

Days of ICU stay (IQR)

240

9 (6,15)

6 (4,10)

7 (4,14)

0.008^a

Hospital mortality (%)

240

30 (25)

31 (26)

61 (25)

1^b

One-year mortality (%)

240

66 (55)

71 (59)

137 (57)

0.614^b

Risk factors for ALI/ARDS

240

< 0.001^b

Non-pulmonary sepsis

55 (46)

70 (60)

125 (53)

Pneumonia

39 (33)

22 (19)

61 (26)

Aspiration

24 (20)

8 (7)

32 (14)

Other or None^d

1 (1)

16 (14)

17 (16)

Patients on ventilator

89 (74)

71 (59)

160 (67)

0.016^b

25-OHD (nmol/L) (IQR)

239

45.8 (29.9, 60.8)

39.0 (25.0, 56.9)

43.2 (27.6, 58.8)

0.123^a

Vitamin D status (%)

239

0.358^b

Deficiency (< 50 nmol/L)

72 (60)

82 (69)

154 (64)

Insufficiency (50 to 75 nmol/L)

32 (27)

26 (22)

58 (24)

Sufficiency (> 75 nmol/L)

16 (13)

11 (9)

27 (11)