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Table 1 Characteristics of the included studies

From: Pooled prevalence of deep vein thrombosis among coronavirus disease 2019 patients

Authors

Sample

Age

Male (%)

Location

Design of studies

Screening of DVT

ICU/non-ICU*

Prophylaxis (%)

DVT (%)

Zhang et al. (PMID: 32421381)

143

63 (mean)

74 (51.7)

China

Cross-sectional study

Ultrasound

N/R

53 (37.1)

66 (46.2)

Ren et al. (PMID: 32412320)

48

70 (median)

26 (54.2)

China

Cross-sectional study

Ultrasound

ICU

47 (97.9)

41 (85.4)

Demelo-Rodríguez et al. (PMID: 32405101)

156

68.1 (mean)

102 (65.4)

Spain

Prospective study

Ultrasound

Non-ICU

153 (98.1)

23 (14.7)

Middeldorp et al. (PMID: 32369666)

198

61 (mean)

130 (65.7)

Netherlands

Retrospective study

Ultrasound

ICU/non-ICU

198 (100)

26 (13.1)

Bi et al.

420

45 (mean)

200 (47.6)

China

Prospective study

N/R

N/R

N/R

6 (1.4)

Klok et al. (PMID: 32291094)

184

64 (mean)

139 (75.5)

Netherlands

Prospective study

Ultrasound

ICU

184 (100)

1 (0.5)

Karmen-Tuohy et al.

63

61 (mean)

57 (90.5)

USA

Prospective study

N/R

N/R

N/R

2 (3.2)

Llitjos et al. (PMID: 32320517)

26

68 (median)

20 (76.9)

France

Retrospective study

Ultrasound

ICU

8 (30.8)

14 (53.8)

Lodigiani et al. (PMID: 32353746)

388

66 (median)

264 (68.0)

Italy

Retrospective study

Ultrasound

ICU/non-ICU

307 (79.1)

6 (1.7)§

Helms et al. (PMID: 32367170)

150

63 (median)

122 (81.3)

France

Prospective study

Imaging

ICU

150 (100)

3 (2.0)

Stoneham et al. (PMID: 32423903)

274

N/R

N/R

UK

Prospective study

Imaging

N/R

N/R

5 (1.8)

Galeano-Valle et al. (PMID: 32425261)

785

N/R

N/R

Spain

Prospective study

Ultrasound

Non-ICU

780 (99.4)

13 (1.7)

Xing et al. (PMID: 32345353)

20

N/R

12 (60.0)

China

Retrospective study

Ultrasound

N/R

N/R

7 (35.0)

Beyls et al. (PMID: 32414510)

12

62 (median)

10 (83.3)

France

Retrospective study

Ultrasound

N/R

N/R

6 (50.0)

Poissy et al. (PMID: 32330083)

107

N/R

N/R

France

Retrospective study

Ultrasound

ICU

107 (100)

5 (4.7)

Beun et al. (PMID: 32311843)

75

N/R

N/R

Netherlands

Retrospective study

N/R

ICU

N/R

3 (4.0)

Cattaneo et al. (PMID: 32349132)

64

70 (median)

35 (54.7)

Italy

Retrospective study

Ultrasound

Non-ICU

64 (100)

0 (0.0)

Tavazzi et al. (PMID: 32322918)

54

N/R

N/R

Italy

Retrospective study

Ultrasound

ICU

54 (100)

8 (14.8)

Voicu et al. (PMID: 32479784)

56

N/R

42 (75.0)

France

Prospective study

Ultrasound

ICU

49 (87.5)

26 (46.4)

Hippensteel et al. (PMID: 32484907)

91

56.5 (mean)

53 (58.2)

USA

Retrospective study

Ultrasound

ICU

N/R

11 (12.1)

Fraissé et al. (PMID: 32487122)

92

61 (median)

73 (79.3)

France

Retrospective study

N/R

ICU

92 (100)

6 (6.5)

Desborough et al. (PMID: 32485437)

66

59 (median)

48 (72.7)

UK

Retrospective study

Imaging

ICU

66 (100)

6 (9.1)

Al-Samkari et al. (PMID: 32492712)

400

61.8 (mean)

228 (57.0)

USA

Retrospective study

Imaging

N/R

400 (100)

10 (2.5)

Edler et al. (PMID: 32500199)

80

79.2 (mean)

46 (57.5)

Germany

Prospective study

N/R

N/R

N/R

32 (40.0)

Grandmaison et al. (PMID: 32529170)

58

N/R

N/R

Switzerland

Cross-sectional study

Ultrasound

ICU/non-ICU

N/R

28 (48.3)

Artifoni et al. (PMID: 32451823)

71

64 (median)

43 (60.6)

France

Retrospective study

Ultrasound

Non-ICU

70 (98.6)

15 (21.1)

Nahum et al. (PMID: 32469410)

34

62.2 (mean)

25 (73.5)

France

Prospective study

Ultrasound

ICU

34 (100)

27 (79.4)

Zhang et al. (PMID: 32553905)

23

44.7 (mean)

15 (65.2)

China

Prospective study

N/R

ICU/non-ICU

N/R

1 (4.3)

  1. DVT deep vein thrombosis, ICU intensive care unit, N/R not (clearly) reported
  2. *Articles clearly reported the prevalence of DVT in COVID-19 patients treated in ICU or non-ICU
  3. doi: https://doi.org/10.1101/2020.04.22.20076190
  4. doi: https://doi.org/10.1101/2020.05.07.20094797
  5. §Data missing for patients