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Table 1 Patient characteristics, labs and vital parameters expressed as median (interquartile range [IQR]) or no (percentage (%))

From: The effect of vitamin K on prothrombin time in critically ill patients: an observational registry study

 

Unmatched groups

Matched groups

Controls

n = 615

VK group

n = 134

Standardized difference

p value

Controls

n = 129

VK group

n = 129

Standardized difference

p value

Variables included in matching

SAPS 3 EMR

24 (10–45)

26 (14–45) (20.8)

0.033

0.38

28 (12–47)

26 (14–42)

− 0.088

0.64

Age (years)

67 (54–75)

68 (55–75)

− 0.004

0.99

68 (54–75)

67 (55–74)

− 0.041

0.62

Pre-treatment PT-INR

1.3 (1.3–1.4)

1.5 (1.4–1.6)

0.78

< 0.001

1.5 (1.4–1.6)

1.5 (1.4–1.6)

0.005

0.96

Sex (female)

204 (33)

43 (30)

− 0.023

0.81

43 (33)

42 (33)

− 0.017

0.90

Baseline variables not included in matching

Reasons for admissiona, n (%)

  Severe sepsis or septic shockb

159 (26)

53 (40)

NA

0.001

53 (41)

52 (40)

NA

0.90

  Trauma

61 (10)

16 (12)

NA

0.49

4 (3)

15 (12)

NA

0.009

  CNS

254 (41)

33 (25)

NA

< 0.001

32 (25)

31 (24)

NA

0.89

  Haematologic

41 (7)

9 (7)

NA

0.99

8 (6)

8 (6)

NA

1.0

  Gastric

103 (17)

38 (28)

NA

0.002

31 (24)

38 (29)

NA

0.33

  Metabolic

100 (16)

17 (13)

NA

0.30

23 (18)

17 (13)

NA

0.30

  Respiratory

301 (49)

72 (54)

NA

0.32

69 (53)

69 (53)

NA

1.0

  Cardiovascular

226 (37)

28 (21)

NA

< 0.001

51 (40)

27 (21)

NA

0.001

  Hepatic

30 (5)

9 (7)

NA

0.39

7 (5)

9 (7)

NA

0.61

  Renal

130 (21)

27 (20)

NA

0.79

38 (29)

27 (21)

NA

0.12

  Other

50 (8)

15 (11)

NA

0.26

12 (9)

14 (11)

NA

0.68

Comorbidities, n (%)c

 Cancerd

85 (14)

26 (19)

NA

0.099

15 (12)

23 (18)

NA

0.15

 Congestive heart failuree

30 (5)

9 (7)

NA

0.39

10 (8)

8 (6)

NA

0.63

 Haematological malignancyf

22 (4)

6 (4)

NA

0.62

10 (8)

6 (5)

NA

0.31

 Immunosuppressive therapyg

35 (6)

6 (4)

NA

0.58

8 (6)

6 (5)

NA

0.59

 Multiple comorbidities

13 (2)

3 (2)

NA

0.93

2 (2)

3 (2)

NA

0.65

  1. aPatients could have multiple reasons for admission that individually would justify intensive care
  2. bAccording to the Sepsis 2 definition
  3. cPatients could have multiple comorbidities
  4. dCancer disseminated beyond regional lymph nodes
  5. eNew York Heart Association stadium IV. Fatigue, dyspnoea or anginal pain at rest or minimal physical activity, which increases with physical activity
  6. fDiagnosis of lymphoma, acute leukaemia or myeloma
  7. gSystemic steroid treatment corresponding to at least 0.3 mg/kg of prednisolone daily within 6 months; external radiotherapy against invasive malignancy within 6 months; or chemotherapy due to malignancy, vasculitis, rheumatoid arthritis or inflammatory bowel disease