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Table 1 Study characteristics

From: Incidence and mortality of pulmonary embolism in COVID-19: a systematic review and meta-analysis

First author (Year)

Study design

City (country)

Male (%)

Age (median, years)

Settings

PE diagnosis

D-dimer (median, mg/dL)

Prophylactic anticoagulation (%)

Mechanical ventilation (%)

ARDS (%)

Overall mortality (%)

Asia

 Wang Y (2020) [2]

RCT (remdesivir group)

Beijing (China)

56

66

Inpatient

NA

NA

NA

7

10

15

 Wang Y (2020) [2]

RCT (placebo group)

Beijing (China)

65

64

Inpatient

NA

NA

NA

13

8

13

America

 Riker RR (2020) [3]

Case series

Portland (USA)

NA

NA

Inpatient (ICU)

CTPA

NA

NA

100

100

NA

 LeBrun DG (2020) [4]

Retrospective cohort

New York (USA)

33

87*

Inpatient (ICU, ward)

NA

NA

NA

33

NA

56

Europe

 Wichmann D (2020) [5]

Case series

Hamburg (Germany)

75

73

Mortuary

Autopsy

90.4

33

33

NA

100

 Klok FA (2020) [6]

Retrospective cohort

Leiden (Netherlands)

76

64*

Inpatient (ICU)

CTPA

NA

100

NA

NA

22

 Llitjos JF (2020) [7]

Retrospective cohort

Pairs (France)

77

68

Inpatient (ICU)

CDU

1.8

31

100

81

12

 Helms J (2020) [8]

Prospective cohort

Strasbourg (France)

81

63

Inpatient (ICU)

CTPA

2.3

100

100

100

9

 Menter T (2020) [9]

Retrospective cohort

Basel (Switzerland)

81

76*

Mortuary

Autopsy

4.0

NA

30

NA

100

 Florian Bompard (2020) [10]

Retrospective cohort

Paris (France)

70

64

Inpatient, outpatient

CTPA

1.6

53

13

NA

12

 Hékimian G (2020) [11]

Retrospective cohort

Paris (France)

NA

NA

Inpatient (ICU)

CTPA or autopsy

NA

NA

NA

NA

NA

 Artifoni M (2020) [12]

Retrospective cohort

Nantes (France)

61

64

Inpatient (ICU, ward)

CTPA

0.8

99

11

NA

NA

 Fraissé M (2020) [13]

Retrospective cohort

Argenteuil (France)

79

61

Inpatient (ICU)

CDU

2.4

47

89

NA

41

 Thomas W (2020) [14]

Retrospective cohort

Cambridge (UK)

69

20–29: 2%

30–39: 5%

40–49: 13%

50–59: 29%

60–69: 22%

70–79: 27%

80–89: 3%

Inpatient (ICU)

CTPA

0.4

NA

83

NA

16

 Lodigiani C (2020) [15]

Retrospective cohort

Milano (Italy)

68

66

Inpatient (ICU, ward)

CTPA

Survivors:

Day 1–3: 0.4

Day 4–6: 0.4

Day 7–9: 0.5

Non-survivors:

Day 1–3: 0.9

Day 4–6: 0.9

Day 7–9: 1.5

79

NA

NA

26

 Poissy J (2020) [16]

Case series

Lille (France)

NA

NA

Inpatient (ICU)

CTPA

NA

NA

63

63

14

 Gervaise A (2020) [17]

Retrospective cohort

Saint Mande Cedex (France)

75

62*

Outpatient

CTPA

3.6*

NA

57

NA

15

 Longchamp A (2020) [18]

Case series

Sion (Switzerland)

64

68*

Inpatient

CTPA

2.1

96

92

NA

20

 Leonard-Lorant I (2020) [19]

Retrospective cohort

Strasbourg (France)

66

64

Inpatient (ICU, ward)

CTPA

PE: 15.4

Non-PE: 1.9

46

NA

NA

NA

 Grillet F (2020) [20]

Retrospective cohort

Besancon (France)

70

66*

Inpatient (ICU, ward)

CTPA

NA

NA

34

NA

NA

  1. *In studies not reporting the median, results are represented by the mean
  2. CDU complete duplex ultrasound, CTPA CT pulmonary angiography, ICU intensive care unit, NA not available, PE pulmonary embolism, RCT randomized controlled trial